C01B3/00	7	Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen (production of water-gas or synthesis gas from solid carbonaceous material C10J)<br><br><u>NOTE</u><br><br>In this group it is desirable to add the indexing codes of groups B01J2208/00 and B01J2219/00, for details relating to the reactors used in the generation of hydrogen or synthesis gas. <br>In groups C01B3/12&#160;-&#160;C01B3/18 and in groups C01B3/22&#160;-&#160;C01B3/586 it is desirable to add the indexing codes of group C01B2203/00, for aspects relating to hydrogen or synthesis gas generation processes. 	C01B3/00	C01B3/00		713
C01B3/0005	8	Reversible storage of hydrogen, e.g. by hydrogen getters or electrodes<br><br><u>NOTE</u><br><br>In groups C01B3/0005 - C01B3/0084, the last place priority rule is not applied.	C01B3/0005	C01B3/0005		599
C01B3/001	9	characterised by the uptaking media; Treatment thereof<br><br><u>WARNING</u><br>Group C01B3/001 is impacted by reclassification into group C01B3/0018. <br>Groups C01B3/001 and C01B3/0018 should be considered in order to perform a complete search.	C01B3/001	C01B3/001		500
C01B3/0015	10	Organic compounds, e.g. liquid organic hydrogen carriers [LOHC] or metalorganic compounds; Solutions thereof	C01B3/0015	C01B3/0015		812
C01B3/0018	10	Inorganic elements or compounds, e.g. oxides, nitrides, borohydrides or zeolites; Solutions thereof<br><br><u>WARNING</u><br>Group C01B3/0018 is incomplete pending reclassification of documents from group C01B3/001. <br>Groups C01B3/001 and C01B3/0018 should be considered in order to perform a complete search.	C01B3/0018	C01B3/0018		4
C01B3/0021	11	Elemental carbon, e.g. active carbon, carbon nanotubes or fullerenes	C01B3/0021	C01B3/0021		313
C01B3/0026	11	Metals or metal hydrides<br><br><u>NOTE</u><br><br>In all of the groups C01B3/0026 - C01B3/0084, the metallic storage materials may contain minor quantities of non-metals such as B, C, O, S, Se, Si; e.g. C01B3/0036 "only containing iron and titanium" includes Fe-Ti compositions comprising non-metals	C01B3/0026	C01B3/0026		388
C01B3/0031	11	Intermetallic compounds; Metal alloys	C01B3/0031	C01B3/0031		970
C01B3/0036	12	only containing iron and titanium	C01B3/0036	C01B3/0036		75
C01B3/0042	12	only containing magnesium and nickel	C01B3/0042	C01B3/0042		92
C01B3/0047	12	containing a rare earth metal<br><br><u>NOTE</u><br><br>In the groups C01B3/0047 - C01B3/0057 a "rare-earth metal" means one single metal or a combination of metals selected from the lanthanides, Sc or Y	C01B3/0047	C01B3/0047		245
C01B3/0057	13	{and nickel}	C01B3/0047	C01B3/00		338
C01B3/0073	10	Slurries; Suspensions	C01B3/0073	C01B3/0073		45
C01B3/0078	10	Composite solid storage media, e.g. mixtures of polymers and metal hydrides, coated solid compounds or structurally heterogeneous solid compounds	C01B3/0078	C01B3/0078		941
C01B3/0084	10	Solid storage media characterised by their shape, e.g. porous compacts or hollow particles	C01B3/0084	C01B3/0084		360
C01B3/0089	8	Ortho-para conversion	C01B3/0089	C01B3/0089		108
C01B3/0094	8	Atomic hydrogen	C01B3/0094	C01B3/0094		63
C01B3/02	8	Production of hydrogen; Production&#160;of gaseous mixtures containing hydrogen	C01B3/02	C01B3/02		1627
C01B3/025	9	Preparation or purification of gas mixtures for ammonia synthesis	C01B3/025	C01B3/025		1114
C01B3/04	9	by decomposition of inorganic compounds (reversible storage of hydrogen C01B3/0018)	C01B3/04	C01B3/04		970
C01B3/042	10	Decomposition of water (by electrolysis of water C25B1/04)<br><br><u>WARNING</u><br>Group C01B3/042 is impacted by reclassification into group C01B3/046. <br>Groups C01B3/042 and C01B3/046 should be considered in order to perform a complete search.	C01B3/042	C01B3/042		4091
C01B3/045	11	{in gaseous phase}	C01B3/042	C01B3/04		338
C01B3/046	11	using catalysts<br><br><u>WARNING</u><br>Group C01B3/046 is incomplete pending reclassification of documents from group C01B3/042. <br>Groups C01B3/042 and C01B3/046 should be considered in order to perform a complete search.	C01B3/046	C01B3/046		9
C01B3/047	10	Decomposition of ammonia	C01B3/047	C01B3/047		1407
C01B3/06	9	by reaction of inorganic compounds containing electro-positively bound hydrogen with inorganic reducing agents	C01B3/06	C01B3/06		824
C01B3/061	10	by reaction of water with metal oxides	C01B3/061	C01B3/061		436
C01B3/063	11	{Cyclic methods}	C01B3/061	C01B3/06		244
C01B3/065	10	by reaction of inorganic compounds with hydrides	C01B3/065	C01B3/065		1217
C01B3/066	10	{by reaction of water with phosphorus}	C01B3/06	C01B3/06		74
C01B3/08	10	by reaction of inorganic compounds&#160;with metals	C01B3/08	C01B3/08		1221
C01B3/10	11	by reaction of water vapour with metals	C01B3/10	C01B3/10		737
C01B3/103	10	the hydrogen being generated from the water as a result of cycles of reactions, e.g. sulfur-iodine cycle	C01B3/103	C01B3/103		223
C01B3/12	10	by reaction of water vapour with carbon monoxide	C01B3/12	C01B3/12		629
C01B3/14	11	Handling of heat and steam	C01B3/14	C01B3/14		111
C01B3/16	11	using catalysts	C01B3/16	C01B3/16		1571
C01B3/18	11	using moving solid particles	C01B3/18	C01B3/18		10
C01B3/20	10	by reaction of metal hydroxides with carbon monoxide	C01B3/20	C01B3/20		10
C01B3/22	9	by decomposition of gaseous or liquid organic compounds	C01B3/22	C01B3/22		1566
C01B3/24	10	of hydrocarbons	C01B3/24	C01B3/24		868
C01B3/26	11	using catalysts	C01B3/26	C01B3/26		1383
C01B3/28	11	using moving solid particles, e.g. fluidised bed technique	C01B3/28	C01B3/28		344
C01B3/32	9	by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air	C01B3/32	C01B3/32		880
C01B3/323	10	Catalytic reaction of gaseous or liquid organic compounds other than hydrocarbons with gasifying agents<br><br><u>WARNING</u><br>Group C01B3/323 is impacted by reclassification into group C01B3/3231. <br>Groups C01B3/323 and C01B3/3231 should be considered in order to perform a complete search.	C01B3/323	C01B3/323		1205
C01B3/3231	11	of alcohols, e.g. methanol or ethanol<br><br><u>WARNING</u><br>Group C01B3/3231 is incomplete pending reclassification of documents from group C01B3/323. <br>Groups C01B3/323 and C01B3/3231 should be considered in order to perform a complete search.	C01B3/3231	C01B3/3231		7
C01B3/326	11	characterised by the catalysts	C01B3/326	C01B3/326		935
C01B3/34	10	by reaction of hydrocarbons with gasifying agents	C01B3/34	C01B3/34		1901
C01B3/342	11	{with the aid of electrical means, electromagnetic or mechanical vibrations, or particle radiations}	C01B3/34	C01B3/34		420
C01B3/344	11	{using non-catalytic solid particles}	C01B3/34	C01B3/34		95
C01B3/36	11	using oxygen; using&#160;mixtures containing oxygen as gasifying agents	C01B3/36	C01B3/36		1746
C01B3/363	12	characterised by the burner	C01B3/363	C01B3/363		438
C01B3/366	12	{Partial combustion in internal-combustion engines}	C01B3/36	C01B3/36		84
C01B3/38	11	using catalysts	C01B3/38	C01B3/38		3326
C01B3/382	12	Processes with two or more reaction steps, of which at least one is catalytic, e.g. steam reforming and partial oxidation	C01B3/382	C01B3/382		1711
C01B3/384	12	with external heating of the catalyst	C01B3/384	C01B3/384		2159
C01B3/386	12	Catalytic partial combustion	C01B3/386	C01B3/386		1147
C01B3/40	12	characterised by the catalyst	C01B3/40	C01B3/40		2614
C01B3/42	12	using moving solid particles, e.g. fluidised bed technique	C01B3/42	C01B3/42		253
C01B3/46	11	using discontinuously preheated non-moving solid materials, e.g. blast and run	C01B3/46	C01B3/46		367
C01B3/48	11	followed by reaction of water vapour with carbon monoxide	C01B3/48	C01B3/48		2026
C01B3/50	8	Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification	C01B3/50	C01B3/50		1840
C01B3/501	9	by diffusion	C01B3/501	C01B3/501		1046
C01B3/503	10	characterised by membranes	C01B3/503	C01B3/503		901
C01B3/505	11	Membranes containing palladium	C01B3/505	C01B3/505		705
C01B3/506	9	at low temperatures	C01B3/506	C01B3/506		746
C01B3/508	9	by using hydrogen storage media (reversible storage of hydrogen C01B3/0005)	C01B3/508	C01B3/508		555
C01B3/52	9	by contacting with liquids; Regeneration of used liquids	C01B3/52	C01B3/52		1059
C01B3/54	10	including a catalytic reaction	C01B3/54	C01B3/54		56
C01B3/56	9	by contacting with solids; Regeneration of used solids	C01B3/56	C01B3/56		2432
C01B3/58	10	including a catalytic reaction	C01B3/58	C01B3/58		437
C01B3/583	11	{the reaction being the selective oxidation of carbon monoxide}	C01B3/58	C01B3/58		497
C01B3/586	11	{the reaction being a methanation reaction}	C01B3/58	C01B3/58		198
C01B4/00	7	Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3&#160;+ D2&#160;&#8594; NH2D + HD	C01B4/00	C01B4/00		532
C01B5/00	7	Water	C01B5/00	C01B5/00		515
C01B5/02	8	Heavy water; Preparation by chemical reaction of hydrogen isotopes or their compounds, e.g. 4ND3 + 7O2 ---&gt; 4NO2 + 6D2O, 2D2 + O2 ---&gt; 2D2O	C01B5/02	C01B5/02		388
C01B6/00	7	Hydrides of metals {including fully or partially hydrided metals, alloys or intermetallic compounds (use of some thereof for reversible sorption of hydrogen C01B3/0005, C01B3/508); Compounds containing at least one metal-hydrogen bond, e.g. (GeH3)2S, SiH GeH}; Monoborane or diborane; Addition complexes thereof (higher hydrides of boron, substituted hydrides of boron C01B35/00)	C01B6/00	C01B6/00		764
C01B6/003	8	{Hydrides containing only one metal and one or several non-metals}	C01B6/00	C01B6/00		27
C01B6/006	9	{only one metal and one or several halogens}	C01B6/00	C01B6/00		14
C01B6/02	8	Hydrides of transition elements; Addition complexes thereof	C01B6/02	C01B6/02		143
C01B6/04	8	Hydrides of alkali metals, alkaline earth metals, beryllium or magnesium; Addition complexes thereof	C01B6/04	C01B6/04		393
C01B6/06	8	Hydrides of aluminium, gallium, indium, thallium, germanium, tin, lead, arsenic, antimony, bismuth or polonium; Monoborane; Diborane; Addition complexes thereof	C01B6/06	C01B6/06		237
C01B6/065	9	{Hydrides of arsenic or antimony}	C01B6/06	C01B6/06		35
C01B6/10	9	Monoborane; Diborane; Addition complexes thereof	C01B6/10	C01B6/10		216
C01B6/11	10	Preparation from boron or inorganic compounds containing boron and oxygen	C01B6/11	C01B6/11		26
C01B6/13	10	Addition complexes of monoborane or diborane, e.g. with phosphine, arsine or hydrazine	C01B6/13	C01B6/13		28
C01B6/15	11	Metal borohydrides; Addition complexes thereof	C01B6/15	C01B6/15		39
C01B6/17	12	Preparation from boron or inorganic compounds containing boron and oxygen	C01B6/17	C01B6/17		25
C01B6/19	12	Preparation from other compounds of boron	C01B6/19	C01B6/19		14
C01B6/21	13	Preparation of borohydrides of alkali metals, alkaline earth metals, magnesium or beryllium; Addition complexes thereof, e.g. LiBH4.2N2H4, NaB2H7	C01B6/21	C01B6/21		200
C01B6/23	13	Preparation of borohydrides of other metals, e.g. aluminium borohydride; Addition complexes thereof, e.g. Li[Al(BH4)3H]	C01B6/23	C01B6/23		38
C01B6/24	8	Hydrides containing at least two metals; Addition complexes thereof (C01B6/13&#160;-&#160;C01B6/23 take precedence)	C01B6/24	C01B6/24		186
C01B6/243	9	{containing only hydrogen, aluminium and alkali metals, e.g. Li(AlH4)}	C01B6/24	C01B6/24		173
C01B6/246	9	{also containing non-metals other than hydrogen}	C01B6/24	C01B6/24		37
C01B6/26	9	Preparation from the metal with the highest valency or from its oxides or salts of its oxyacids	C01B6/26	C01B6/26		1
C01B6/34	8	Purification; Stabilisation	C01B6/34	C01B6/34		79
C01B7/00	7	Halogens; Halogen acids (oxyacids C01B11/00)	C01B7/00	C01B7/00		94
C01B7/01	8	Chlorine; Hydrogen chloride	C01B7/01	C01B7/01		1094
C01B7/012	9	{Preparation of hydrogen chloride from the elements}	C01B7/01	C01B7/01		289
C01B7/015	9	{Chlorine hydrates; Obtaining chlorine therefrom}	C01B7/01	C01B7/01		31
C01B7/017	9	{Preparation of hydrogen chloride by reacting together chlorine, water and carbon or carbon monoxide (the carbon not acting only as catalyst)}	C01B7/01	C01B7/01		33
C01B7/03	9	Preparation from chlorides	C01B7/03	C01B7/03		457
C01B7/035	10	{Preparation of hydrogen chloride from chlorides}	C01B7/03	C01B7/03		448
C01B7/04	10	Preparation of chlorine from hydrogen chloride	C01B7/04	C01B7/04		536
C01B7/05	10	Preparation from ammonium chloride	C01B7/05	C01B7/05		44
C01B7/055	11	{Preparation of hydrogen chloride from ammonium chloride}	C01B7/05	C01B7/05		53
C01B7/07	9	Purification {; Separation (C01B7/015 takes precedence)}	C01B7/07	C01B7/07		119
C01B7/0706	10	{of hydrogen chloride}	C01B7/07	C01B7/07		740
C01B7/0712	11	{by distillation}	C01B7/07	C01B7/07		353
C01B7/0718	11	{by adsorption}	C01B7/07	C01B7/07		175
C01B7/0725	12	{by active carbon}	C01B7/07	C01B7/07		60
C01B7/0731	11	{by extraction}	C01B7/07	C01B7/07		51
C01B7/0737	12	{hydrogen chloride being extracted}	C01B7/07	C01B7/07		94
C01B7/0743	10	{of gaseous or dissolved chlorine}	C01B7/07	C01B7/07		250
C01B7/075	10	of liquid chlorine	C01B7/075	C01B7/075		49
C01B7/09	8	Bromine; Hydrogen bromide	C01B7/09	C01B7/09		131
C01B7/093	9	{Hydrogen bromide}	C01B7/09	C01B7/09		263
C01B7/096	9	{Bromine}	C01B7/09	C01B7/09		506
C01B7/13	8	Iodine; Hydrogen iodide	C01B7/13	C01B7/13		120
C01B7/135	9	{Hydrogen iodide}	C01B7/13	C01B7/13		103
C01B7/14	9	Iodine	C01B7/14	C01B7/14		495
C01B7/16	10	Preparation from seaweed	C01B7/16	C01B7/16		100
C01B7/19	8	Fluorine; Hydrogen fluoride	C01B7/19	C01B7/19		110
C01B7/191	9	{Hydrogen fluoride}	C01B7/19	C01B7/19		700
C01B7/192	10	{Preparation from fluorspar}	C01B7/19	C01B7/19		257
C01B7/193	10	{Preparation from silicon tetrafluoride, fluosilicic acid or fluosilicates}	C01B7/19	C01B7/19		123
C01B7/194	10	{Preparation from ammonium fluoride}	C01B7/19	C01B7/19		36
C01B7/195	10	{Separation; Purification}	C01B7/19	C01B7/19		422
C01B7/196	11	{by distillation}	C01B7/19	C01B7/19		287
C01B7/197	11	{by adsorption}	C01B7/19	C01B7/19		91
C01B7/198	12	{by solid ion-exchangers}	C01B7/19	C01B7/19		37
C01B7/20	9	Fluorine	C01B7/20	C01B7/20		176
C01B7/24	8	Inter-halogen compounds	C01B7/24	C01B7/24		193
C01B9/00	7	General methods of preparing halides (particular individual halides, see the relevant groups in C01B&#160;-&#160;C01G according to the element combined with the halogen; electrolytic production of inorganic compounds C25B)	C01B9/00	C01B9/00		73
C01B9/02	8	Chlorides	C01B9/02	C01B9/02		149
C01B9/04	8	Bromides	C01B9/04	C01B9/04		46
C01B9/06	8	Iodides	C01B9/06	C01B9/06		31
C01B9/08	8	Fluorides	C01B9/08	C01B9/08		342
C01B11/00	7	Oxides or oxyacids of halogens; Salts thereof	C01B11/00	C01B11/00		44
C01B11/02	8	Oxides of chlorine	C01B11/02	C01B11/02		108
C01B11/021	9	{Chlorine hemioxide (Cl2O)}	C01B11/02	C01B11/02		17
C01B11/022	9	{Chlorine dioxide (ClO2)}	C01B11/02	C01B11/02		305
C01B11/023	10	{Preparation from chlorites or chlorates}	C01B11/02	C01B11/02		354
C01B11/024	11	{from chlorites}	C01B11/02	C01B11/02		635
C01B11/025	11	{from chlorates without any other reaction reducing agent than chloride ions}	C01B11/02	C01B11/02		262
C01B11/026	11	{from chlorate ions in the presence of a peroxidic compound, e.g. hydrogen peroxide, ozone, peroxysulfates}	C01B11/02	C01B11/02		117
C01B11/027	11	{from chlorate ions in the presence of a nitrogen compound selected from nitrogen dioxide, nitrate or nitrite ions, nitrosylchloride, hydrazine or hydrazine compounds}	C01B11/02	C01B11/02		21
C01B11/028	10	{Separation; Purification}	C01B11/02	C01B11/02		77
C01B11/029	9	{Chlorine trioxide (ClO3); Chlorine hexoxide (Cl2O6); Chlorine heptoxide (Cl2O7)}	C01B11/02	C01B11/02		8
C01B11/04	8	Hypochlorous acid	C01B11/04	C01B11/04		262
C01B11/06	9	Hypochlorites	C01B11/06	C01B11/06		139
C01B11/062	10	{Hypochlorites of alkali metals}	C01B11/06	C01B11/06		313
C01B11/064	10	{Hypochlorites of alkaline-earth metals}	C01B11/06	C01B11/06		413
C01B11/066	10	{Magnesium hypochlorite}	C01B11/06	C01B11/06		21
C01B11/068	10	{Stabilisation by additives other than oxides, hydroxides, carbonates of alkali or alkaline-earth metals; Coating of particles; Shaping; Granulation}	C01B11/06	C01B11/06		127
C01B11/08	8	Chlorous acid	C01B11/08	C01B11/08		35
C01B11/10	9	Chlorites	C01B11/10	C01B11/10		159
C01B11/12	8	Chloric acid	C01B11/12	C01B11/12		17
C01B11/14	9	Chlorates	C01B11/14	C01B11/14		98
C01B11/145	10	{Separation; Crystallisation; Purification, After-treatment; Stabilisation by additives}	C01B11/14	C01B11/14		84
C01B11/16	8	Perchloric acid	C01B11/16	C01B11/16		19
C01B11/18	9	Perchlorates	C01B11/18	C01B11/18		137
C01B11/185	10	{Ammonium perchlorate}	C01B11/18	C01B11/18		110
C01B11/20	8	Oxygen compounds of bromine	C01B11/20	C01B11/20		93
C01B11/22	8	Oxygen compounds of iodine	C01B11/22	C01B11/22		94
C01B11/24	8	Oxygen compounds of fluorine	C01B11/24	C01B11/24		83
C01B13/00	7	Oxygen; Ozone; Oxides or hydroxides in general	C01B13/00	C01B13/00		118
C01B13/02	8	Preparation of oxygen (by liquefying F25J)	C01B13/02	C01B13/02		1036
C01B13/0203	9	{from inorganic compounds}	C01B13/02	C01B13/02		392
C01B13/0207	10	{Water}	C01B13/02	C01B13/02		768
C01B13/0211	10	{Peroxy compounds}	C01B13/02	C01B13/02		270
C01B13/0214	11	{Hydrogen peroxide}	C01B13/02	C01B13/02		304
C01B13/0218	10	{Chlorate}	C01B13/02	C01B13/02		156
C01B13/0222	9	{from organic compounds}	C01B13/02	C01B13/02		30
C01B13/0225	10	{Peroxy compounds}	C01B13/02	C01B13/02		32
C01B13/0229	9	{Purification or separation processes}<br><br><u>NOTE</u><br><br>In groups C01B13/0229 - C01B13/0288, additional features relating to the purification or separation processes are indexed with codes chosen from C01B2210/0026 - C01B2210/0098.	C01B13/02	C01B13/02		156
C01B13/0233	10	{Chemical processing only}	C01B13/02	C01B13/02		62
C01B13/0237	11	{by oxidation}	C01B13/02	C01B13/02		40
C01B13/024	11	{by reduction}	C01B13/02	C01B13/02		12
C01B13/0244	11	{by complexation}	C01B13/02	C01B13/02		17
C01B13/0248	10	{Physical processing only}	C01B13/02	C01B13/02		479
C01B13/0251	11	{by making use of membranes}	C01B13/02	C01B13/02		588
C01B13/0255	12	{characterised by the type of membrane}	C01B13/02	C01B13/02		526
C01B13/0259	11	{by adsorption on solids}	C01B13/02	C01B13/02		1074
C01B13/0262	12	{characterised by the adsorbent}	C01B13/02	C01B13/02		264
C01B13/0266	13	{Carbon based materials}	C01B13/02	C01B13/02		68
C01B13/027	13	{Zeolites}	C01B13/02	C01B13/02		325
C01B13/0274	13	{Other molecular sieve materials}	C01B13/02	C01B13/02		165
C01B13/0277	12	{Temperature swing adsorption}	C01B13/02	C01B13/02		20
C01B13/0281	12	{in getters}	C01B13/02	C01B13/02		63
C01B13/0285	11	{by absorption in liquids}	C01B13/02	C01B13/02		80
C01B13/0288	10	{Combined chemical and physical processing}<br><br><u>NOTE</u><br><br>In this group, processing steps are indexed with codes chosen from C01B2210/0001&#160;-&#160;C01B2210/0025.	C01B13/02	C01B13/02		57
C01B13/0292	9	{Preparation from air using a molten phase containing alkali metal nitrite, optionally together with other oxygen acceptors}	C01B13/02	C01B13/02		12
C01B13/0296	9	{Generators releasing in a self-sustaining way pure oxygen from a solid charge, without interaction of it with a fluid nor external heating, e.g. chlorate candles or canisters containing them}	C01B13/02	C01B13/02		181
C01B13/08	9	from air with the aid of metal oxides, e.g. barium oxide, manganese oxide {(C01B13/0292 takes precedence)}	C01B13/08	C01B13/08		72
C01B13/083	10	{with barium oxide}	C01B13/08	C01B13/08		21
C01B13/086	10	{with manganese oxide}	C01B13/08	C01B13/08		45
C01B13/10	8	Preparation of ozone	C01B13/10	C01B13/10		1147
C01B13/11	9	by electric discharge<br><br><u>NOTE</u><br><br> In groups C01B13/11 and C01B13/115, additional features relating to the preparation of ozone by electrical discharge are indexed with codes chosen from C01B2201/00&#160;-&#160;C01B2201/90. 	C01B13/11	C01B13/11		2839
C01B13/115	10	{characterised by the electrical circuits producing the electrical discharge}	C01B13/11	C01B13/11		450
C01B13/14	8	Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups of subclasses C01B&#160;-&#160;C01G or C25B, according to the element combined with the oxygen or hydroxy group)	C01B13/14	C01B13/14		539
C01B13/145	9	{After-treatment of oxides or hydroxides, e.g. pulverising, drying, decreasing the acidity}	C01B13/14	C01B13/14		340
C01B13/16	9	Purification	C01B13/16	C01B13/16		41
C01B13/18	9	by thermal decomposition of compounds, e.g. of salts or hydroxides	C01B13/18	C01B13/18		304
C01B13/185	10	{Preparing mixtures of oxides}	C01B13/18	C01B13/18		219
C01B13/20	9	by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state	C01B13/20	C01B13/20		143
C01B13/22	10	of halides or oxyhalides	C01B13/22	C01B13/22		208
C01B13/24	11	in the presence of hot combustion gases	C01B13/24	C01B13/24		40
C01B13/26	11	in the presence of a fluidised bed	C01B13/26	C01B13/26		23
C01B13/28	11	using a plasma or an electric discharge	C01B13/28	C01B13/28		108
C01B13/30	11	Removal and cooling of the oxide-containing suspension	C01B13/30	C01B13/30		38
C01B13/32	9	by oxidation or hydrolysis of elements or compounds in the liquid or solid state {or in non-aqueous solution, e.g. sol-gel process}	C01B13/32	C01B13/32		272
C01B13/322	10	{of elements or compounds in the solid state}	C01B13/32	C01B13/32		146
C01B13/324	11	{by solid combustion synthesis}	C01B13/32	C01B13/32		38
C01B13/326	10	{of elements or compounds in the liquid state}	C01B13/32	C01B13/32		76
C01B13/328	10	{by processes making use of emulsions, e.g. the kerosine process}	C01B13/32	C01B13/32		70
C01B13/34	9	by oxidation or hydrolysis of sprayed or atomised solutions	C01B13/34	C01B13/34		226
C01B13/36	9	by precipitation reactions in {aqueous} solutions {(C01B13/328 takes precedence)}	C01B13/36	C01B13/36		218
C01B13/363	10	{Mixtures of oxides or hydroxides by precipitation}	C01B13/36	C01B13/36		197
C01B13/366	10	{by hydrothermal processing}	C01B13/36	C01B13/36		73
C01B15/00	7	Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides	C01B15/00	C01B15/00		139
C01B15/005	8	{Stabilisation of the solid compounds subsequent to the preparation or to the crystallisation, by additives or by coating}	C01B15/00	C01B15/00		61
C01B15/01	8	Hydrogen peroxide	C01B15/01	C01B15/01		317
C01B15/013	9	Separation; Purification; Concentration	C01B15/013	C01B15/013		503
C01B15/0135	10	{Purification by solid ion-exchangers or solid chelating agents}	C01B15/013	C01B15/013		130
C01B15/017	10	Anhydrous hydrogen peroxide; Anhydrous solutions or gaseous mixtures containing hydrogen peroxide	C01B15/017	C01B15/017		38
C01B15/022	9	Preparation from organic compounds	C01B15/022	C01B15/022		70
C01B15/023	10	by the alkyl-anthraquinone process	C01B15/023	C01B15/023		1068
C01B15/024	10	from hydrocarbons	C01B15/024	C01B15/024		22
C01B15/026	10	from alcohols	C01B15/026	C01B15/026		112
C01B15/027	9	Preparation from water	C01B15/027	C01B15/027		481
C01B15/0275	10	{Preparation by reaction of water, carbon monoxide and oxygen}	C01B15/027	C01B15/027		14
C01B15/029	9	Preparation from hydrogen and oxygen	C01B15/029	C01B15/029		348
C01B15/0295	10	{by electrical discharge}	C01B15/029	C01B15/029		42
C01B15/03	9	Preparation from inorganic peroxy compounds, e.g. from peroxysulfates	C01B15/03	C01B15/03		160
C01B15/032	10	from metal peroxides	C01B15/032	C01B15/032		84
C01B15/037	9	Stabilisation by additives	C01B15/037	C01B15/037		409
C01B15/04	8	Metal peroxides or peroxyhydrates thereof; {Metal} superoxides; {Metal} ozonides; {Peroxyhydrates thereof}	C01B15/04	C01B15/04		47
C01B15/043	9	of alkali metals, alkaline earth metals or magnesium {or beryllium or aluminium}	C01B15/043	C01B15/043		141
C01B15/0435	10	{of alkali metals}	C01B15/043	C01B15/043		183
C01B15/047	9	of heavy metals	C01B15/047	C01B15/047		52
C01B15/0475	10	{of actinides}	C01B15/047	C01B15/047		55
C01B15/055	8	Peroxyhydrates (C01B15/04 takes precedence); Peroxyacids or salts thereof	C01B15/055	C01B15/055		19
C01B15/06	9	containing sulfur	C01B15/06	C01B15/06		45
C01B15/08	10	Peroxysulfates	C01B15/08	C01B15/08		173
C01B15/085	11	{Stabilisation of the solid compounds, subsequent to the preparation or to the crystallisation, by additives or by coating}	C01B15/08	C01B15/08		26
C01B15/10	9	containing carbon	C01B15/10	C01B15/10		71
C01B15/103	10	{containing only alkali metals as metals}	C01B15/10	C01B15/10		181
C01B15/106	10	{Stabilisation of the solid compounds, subsequent to the preparation or to the crystallisation, by additives or by coating}	C01B15/10	C01B15/10		185
C01B15/12	9	containing boron	C01B15/12	C01B15/12		272
C01B15/123	10	{Stabilisation of the solid compounds, subsequent to the preparation or to the crystallisation, by additives or by coating}	C01B15/12	C01B15/12		45
C01B15/126	10	{Dehydration of solid hydrated peroxyborates to less hydrated or anhydrous products}	C01B15/12	C01B15/12		49
C01B15/14	9	containing silicon	C01B15/14	C01B15/14		28
C01B15/16	9	containing phosphorus	C01B15/16	C01B15/16		78
C01B17/00	7	Sulfur; Compounds thereof	C01B17/00	C01B17/00		149
C01B17/02	8	Preparation of sulfur; Purification	C01B17/02	C01B17/02		229
C01B17/0205	9	{Separation of sulfur from liquids, e.g. by coalescence}	C01B17/02	C01B17/02		88
C01B17/021	9	{Separation of sulfur from gases}	C01B17/02	C01B17/02		105
C01B17/0216	9	{Solidification or cooling of liquid sulfur}	C01B17/02	C01B17/02		90
C01B17/0221	9	{Melting}	C01B17/02	C01B17/02		100
C01B17/0226	9	{Vaporising or superheating}	C01B17/02	C01B17/02		42
C01B17/0232	9	{Purification, e.g. degassing}	C01B17/02	C01B17/02		381
C01B17/0237	9	{Converting into particles, e.g. by granulation, milling}	C01B17/02	C01B17/02		160
C01B17/0243	9	{Other after-treatment of sulfur}	C01B17/02	C01B17/02		176
C01B17/0248	10	{of particulate sulfur}	C01B17/02	C01B17/02		76
C01B17/0253	9	{from non-gaseous sulfur compounds other than sulfides or materials containing such sulfides}	C01B17/02	C01B17/02		58
C01B17/0259	10	{by reduction of sulfates}	C01B17/02	C01B17/02		22
C01B17/0264	11	{of calcium sulfates}	C01B17/02	C01B17/02		15
C01B17/027	9	Recovery of sulfur from material containing elemental sulfur, e.g. luxmasses {or sulfur containing ores}; Purification {of the recovered sulfur}	C01B17/027	C01B17/027		310
C01B17/033	10	using a liquid extractant	C01B17/033	C01B17/033		285
C01B17/04	9	from gaseous sulfur compounds including gaseous sulfides	C01B17/04	C01B17/04		378
C01B17/0404	10	{by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process}	C01B17/04	C01B17/04		452
C01B17/0408	11	{Pretreatment of the hydrogen sulfide containing gases}	C01B17/04	C01B17/04		223
C01B17/0413	11	{characterised by the combustion step}	C01B17/04	C01B17/04		132
C01B17/0417	12	{Combustion reactors}	C01B17/04	C01B17/04		115
C01B17/0421	12	{Multistage combustion}	C01B17/04	C01B17/04		53
C01B17/0426	11	{characterised by the catalytic conversion}	C01B17/04	C01B17/04		137
C01B17/043	12	{Catalytic converters}	C01B17/04	C01B17/04		63
C01B17/0434	12	{Catalyst compositions}	C01B17/04	C01B17/04		201
C01B17/0439	12	{at least one catalyst bed operating below the dew-point of sulfur}	C01B17/04	C01B17/04		83
C01B17/0443	12	{in a moving bed}	C01B17/04	C01B17/04		16
C01B17/0447	11	{Separation of the obtained sulfur}	C01B17/04	C01B17/04		94
C01B17/0452	11	{Process control; Start-up or cooling-down procedures of the Claus process}	C01B17/04	C01B17/04		116
C01B17/0456	11	{the hydrogen sulfide-containing gas being a Claus process tail gas}	C01B17/04	C01B17/04		261
C01B17/046	11	{without intermediate formation of sulfur dioxide}	C01B17/04	C01B17/04		97
C01B17/0465	12	{Catalyst compositions}	C01B17/04	C01B17/04		96
C01B17/0469	12	{at least one catalyst bed operating below the dew-point of sulfur}	C01B17/04	C01B17/04		56
C01B17/0473	10	{by reaction of sulfur dioxide or sulfur trioxide containing gases with reducing agents other than hydrogen sulfide}	C01B17/04	C01B17/04		112
C01B17/0478	11	{with hydrocarbons or mixtures containing them}	C01B17/04	C01B17/04		62
C01B17/0482	11	{with carbon or solid carbonaceous materials}	C01B17/04	C01B17/04		151
C01B17/0486	11	{with carbon monoxide or carbon monoxide containing mixtures}	C01B17/04	C01B17/04		62
C01B17/0491	11	{with hydrogen or hydrogen-containing mixtures, e.g. synthesis gas}	C01B17/04	C01B17/04		57
C01B17/0495	10	{by dissociation of hydrogen sulfide into the elements}	C01B17/04	C01B17/04		147
C01B17/05	10	by wet processes	C01B17/05	C01B17/05		834
C01B17/06	9	from non-gaseous sulfides or materials containing such sulfides, e.g. ores	C01B17/06	C01B17/06		602
C01B17/10	9	Finely divided sulfur, e.g. sublimed sulfur, flowers of sulfur	C01B17/10	C01B17/10		237
C01B17/12	9	Insoluble sulfur (mu-sulfur)	C01B17/12	C01B17/12		216
C01B17/125	10	{Sulfur isotopes other than 32S}	C01B17/12	C01B17/12		2
C01B17/16	8	Hydrogen sulfides	C01B17/16	C01B17/16		123
C01B17/161	9	{Preparation from elemental sulfur}	C01B17/16	C01B17/16		54
C01B17/162	10	{from elemental sulfur and hydrogen}	C01B17/16	C01B17/16		78
C01B17/164	9	{Preparation by reduction of oxidic sulfur compounds}	C01B17/16	C01B17/16		176
C01B17/165	9	{Preparation from sulfides, oxysulfides or polysulfides}	C01B17/16	C01B17/16		177
C01B17/167	9	{Separation}	C01B17/16	C01B17/16		277
C01B17/168	9	{Purification}	C01B17/16	C01B17/16		78
C01B17/18	9	Hydrogen polysulfides	C01B17/18	C01B17/18		4
C01B17/20	8	Methods for preparing sulfides or polysulfides, in general (ammonium sulfides or polysulfides C01C; sulfides or polysulfides of metals, other than alkali metals, magnesium, calcium, strontium and barium, see the relevant groups of subclasses C01F or C01G, according to the metal)	C01B17/20	C01B17/20		409
C01B17/22	8	Alkali metal sulfides or polysulfides	C01B17/22	C01B17/22		640
C01B17/24	9	Preparation by reduction	C01B17/24	C01B17/24		61
C01B17/26	10	with carbon	C01B17/26	C01B17/26		140
C01B17/28	10	with reducing gases	C01B17/28	C01B17/28		124
C01B17/30	9	Preparation from sodium or potassium amalgam with sulfur or sulfides	C01B17/30	C01B17/30		21
C01B17/32	9	Hydrosulfides of sodium or potassium	C01B17/32	C01B17/32		137
C01B17/34	9	Polysulfides of sodium or potassium	C01B17/34	C01B17/34		91
C01B17/36	9	Purification	C01B17/36	C01B17/36		99
C01B17/38	9	Dehydration	C01B17/38	C01B17/38		65
C01B17/40	9	Making shaped products, e.g. granules	C01B17/40	C01B17/40		54
C01B17/42	8	Sulfides or polysulfides of magnesium, calcium, strontium, or barium	C01B17/42	C01B17/42		123
C01B17/43	9	from oxides or hydroxides with sulfur or hydrogen sulfide	C01B17/43	C01B17/43		38
C01B17/44	9	by reduction of sulfates	C01B17/44	C01B17/44		116
C01B17/45	8	Compounds containing sulfur and halogen, with or without oxygen	C01B17/45	C01B17/45		47
C01B17/4507	9	{containing sulfur and halogen only}	C01B17/45	C01B17/45		17
C01B17/4515	10	{containing sulfur and fluorine only}	C01B17/45	C01B17/45		9
C01B17/4523	11	{Sulfur tetrafluoride}	C01B17/45	C01B17/45		29
C01B17/453	11	{Sulfur hexafluoride}	C01B17/45	C01B17/45		190
C01B17/4538	10	{containing sulfur and chlorine only}	C01B17/45	C01B17/45		30
C01B17/4546	11	{Sulfur dichloride}	C01B17/45	C01B17/45		17
C01B17/4553	11	{Sulfur hexachloride}	C01B17/45	C01B17/45		3
C01B17/4561	9	{Compounds containing sulfur, halogen and oxygen only}	C01B17/45	C01B17/45		35
C01B17/4569	10	{Thionyl fluoride (SOF2)}	C01B17/45	C01B17/45		15
C01B17/4576	10	{Sulfuryl fluoride (SO2F2)}	C01B17/45	C01B17/45		58
C01B17/4584	10	{Thionyl chloride (SOCl2)}	C01B17/45	C01B17/45		87
C01B17/4592	10	{Sulfuryl chloride (SO2Cl2)}	C01B17/45	C01B17/45		43
C01B17/46	8	Compounds containing sulfur, halogen, hydrogen, and oxygen	C01B17/46	C01B17/46		19
C01B17/463	9	{Fluorosulfonic acid (FSO3H)}	C01B17/46	C01B17/46		15
C01B17/466	9	{Chlorosulfonic acid (ClSO3H)}	C01B17/46	C01B17/46		44
C01B17/48	8	Sulfur dioxide; Sulfurous acid	C01B17/48	C01B17/48		134
C01B17/50	9	Preparation of sulfur dioxide	C01B17/50	C01B17/50		265
C01B17/501	10	{by reduction of sulfur compounds}	C01B17/50	C01B17/50		79
C01B17/502	11	{of sulfur trioxide}	C01B17/50	C01B17/50		40
C01B17/503	11	{of sulfuric acid}	C01B17/50	C01B17/50		36
C01B17/504	11	{of ammonium sulfates (of ammonium sulfates containing sulfuric acid solutions C01B17/585)}	C01B17/50	C01B17/50		31
C01B17/505	11	{of alkali metal sulfates}	C01B17/50	C01B17/50		17
C01B17/506	11	{of calcium sulfates}	C01B17/50	C01B17/50		179
C01B17/507	11	{of iron sulfates}	C01B17/50	C01B17/50		37
C01B17/508	10	{by oxidation of sulfur compounds}	C01B17/50	C01B17/50		164
C01B17/52	10	by roasting sulfides (preliminary treatment of ores or scrap C22B1/00)	C01B17/52	C01B17/52		308
C01B17/54	10	by burning elemental sulfur	C01B17/54	C01B17/54		493
C01B17/56	10	Separation; Purification	C01B17/56	C01B17/56		294
C01B17/58	10	Recovery of sulfur dioxide from acid tar or the like {or from any waste sulfuric acid}	C01B17/58	C01B17/58		242
C01B17/585	11	{from ammonium sulfate containing sulfuric acid solutions}	C01B17/58	C01B17/58		6
C01B17/60	10	Isolation of sulfur dioxide from gases	C01B17/60	C01B17/60		681
C01B17/62	8	Methods of preparing sulfites in general (particular individual sulfites, see the relevant groups of subclasses C01B&#160;-&#160;C01G, according to the cation)	C01B17/62	C01B17/62		90
C01B17/625	9	{metabisulfites or pyrosulfites}	C01B17/62	C01B17/62		5
C01B17/64	8	Thiosulfates; Dithionites; Polythionates	C01B17/64	C01B17/64		333
C01B17/66	9	Dithionites {or hydrosulfites (S2O42-)}	C01B17/66	C01B17/66		317
C01B17/665	10	{Stabilisation by additives subsequent to preparation; Dust prevention by additives}	C01B17/66	C01B17/66		69
C01B17/69	8	Sulfur trioxide; Sulfuric acid	C01B17/69	C01B17/69		169
C01B17/70	9	Stabilisation of gamma-form sulfur trioxide	C01B17/70	C01B17/70		50
C01B17/74	9	Preparation	C01B17/74	C01B17/74		1008
C01B17/745	10	{from sulfates}	C01B17/74	C01B17/74		251
C01B17/76	10	by contact processes	C01B17/76	C01B17/76		527
C01B17/762	11	{High pressure processes}	C01B17/76	C01B17/76		39
C01B17/765	11	Multi-stage SO3-conversion	C01B17/765	C01B17/765		186
C01B17/7655	12	{with intermediate absorption}	C01B17/765	C01B17/765		200
C01B17/77	11	Fluidised-bed processes	C01B17/77	C01B17/77		32
C01B17/775	11	Liquid phase contacting processes or wet catalysis processes	C01B17/775	C01B17/775		216
C01B17/78	11	characterised by the catalyst used	C01B17/78	C01B17/78		150
C01B17/79	12	containing vanadium	C01B17/79	C01B17/79		301
C01B17/80	11	Apparatus	C01B17/80	C01B17/80		288
C01B17/803	12	{Converters}	C01B17/80	C01B17/80		145
C01B17/806	12	{Absorbers; Heat exchangers}	C01B17/80	C01B17/80		261
C01B17/82	10	of sulfuric acid using a nitrogen oxide process	C01B17/82	C01B17/82		142
C01B17/84	11	Chamber process	C01B17/84	C01B17/84		303
C01B17/86	11	Tower process	C01B17/86	C01B17/86		110
C01B17/88	9	Concentration of sulfuric acid	C01B17/88	C01B17/88		646
C01B17/90	9	Separation; Purification	C01B17/90	C01B17/90		653
C01B17/901	10	{Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids (obtaining sulfur dioxide as an intermediate in sulfur trioxide recovery from sulfates, e.g. iron sulfates C01B17/501, from spent acids C01B17/58)}	C01B17/90	C01B17/90		308
C01B17/902	11	{by dialysis}	C01B17/90	C01B17/90		60
C01B17/903	11	{by liquid-liquid extraction}	C01B17/90	C01B17/90		31
C01B17/904	11	{by ion-exchange}	C01B17/90	C01B17/90		35
C01B17/905	10	{Removal of organic impurities}	C01B17/90	C01B17/90		202
C01B17/906	10	{Removal of mercury}	C01B17/90	C01B17/90		28
C01B17/907	10	{Removal of arsenic}	C01B17/90	C01B17/90		69
C01B17/908	10	{Removal of antimony or bismuth}	C01B17/90	C01B17/90		8
C01B17/92	10	Recovery from acid tar or the like {, e.g. alkylation acids (obtaining sulfur dioxide as an intermediate in sulfur trioxode recovery therefrom C01B17/58)}	C01B17/92	C01B17/92		242
C01B17/925	11	{by processes involving a liquid-liquid extraction}	C01B17/92	C01B17/92		62
C01B17/94	10	Recovery from nitration acids	C01B17/94	C01B17/94		111
C01B17/96	8	Methods for the preparation of sulfates in general (particular individual sulfates, see the relevant groups of subclasses C01B&#160;-&#160;C01G, according to the cation)	C01B17/96	C01B17/96		148
C01B17/965	9	{Pyrosulfates}	C01B17/96	C01B17/96		3
C01B17/98	8	Other compounds containing sulfur and oxygen (persulfuric acids C01B15/06; persulfates C01B15/08)	C01B17/98	C01B17/98		22
C01B19/00	7	Selenium; Tellurium; Compounds thereof (phosphorus compounds C01B25/14)	C01B19/00	C01B19/00		271
C01B19/001	8	{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}	C01B19/00	C01B19/00		60
C01B19/002	8	{Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions}	C01B19/00	C01B19/00		782
C01B19/004	8	{Oxides; Hydroxides}	C01B19/00	C01B19/00		194
C01B19/005	8	{Halides}	C01B19/00	C01B19/00		35
C01B19/007	8	{Tellurides or selenides of metals (C01B19/002 takes precedence)}	C01B19/00	C01B19/00		2153
C01B19/008	8	{Salts of oxyacids of selenium or tellurium}	C01B19/00	C01B19/00		112
C01B19/02	8	Elemental selenium or tellurium	C01B19/02	C01B19/02		900
C01B19/04	8	Binary compounds {including binary selenium-tellurium compounds (C01B19/004, C01B19/005, C01B19/007 take precedence)}	C01B19/04	C01B19/04		278
C01B21/00	7	Nitrogen; Compounds thereof	C01B21/00	C01B21/00		75
C01B21/02	8	Preparation of nitrogen (by decomposition of ammonia C01B3/047)	C01B21/02	C01B21/02		436
C01B21/04	8	Purification or separation of nitrogen (by liquefying F25J)	C01B21/04	C01B21/04		168
C01B21/0405	9	{Purification or separation processes}<br><br><u>NOTE</u><br><br>In this group, additional features relating to the purification or separation processes are indexed with codes chosen from C01B2210/0026&#160;-&#160;C01B2210/0098.	C01B21/04	C01B21/04		74
C01B21/0411	10	{Chemical processing only}	C01B21/04	C01B21/04		70
C01B21/0416	11	{by oxidation}	C01B21/04	C01B21/04		46
C01B21/0422	11	{by reduction}	C01B21/04	C01B21/04		100
C01B21/0427	11	{by complexation}	C01B21/04	C01B21/04		17
C01B21/0433	10	{Physical processing only}	C01B21/04	C01B21/04		239
C01B21/0438	11	{by making use of membranes}	C01B21/04	C01B21/04		179
C01B21/0444	12	{characterised by the membrane}	C01B21/04	C01B21/04		128
C01B21/045	11	{by adsorption in solids}	C01B21/04	C01B21/04		369
C01B21/0455	12	{characterised by the adsorbent}	C01B21/04	C01B21/04		126
C01B21/0461	13	{Carbon based materials}	C01B21/04	C01B21/04		143
C01B21/0466	13	{Zeolites}	C01B21/04	C01B21/04		96
C01B21/0472	13	{Other molecular sieve materials}	C01B21/04	C01B21/04		54
C01B21/0477	12	{Temperature swing adsorption}	C01B21/04	C01B21/04		8
C01B21/0483	12	{in getters}	C01B21/04	C01B21/04		22
C01B21/0488	11	{by absorption in liquids}	C01B21/04	C01B21/04		27
C01B21/0494	10	{Combined chemical and physical processing}<br><br><u>NOTE</u><br><br> In this group, processing steps are indexed with codes chosen from C01B2210/0001&#160;-&#160;C01B2210/0025.	C01B21/04	C01B21/04		118
C01B21/06	8	Binary compounds of nitrogen with metals, with silicon, or with boron, {or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron}(azides C01B21/08)<br><br><u>NOTE</u><br><br> Binary compounds, i.e. compounds of nitrogen with only one other element chosen from metals, silicon, boron or carbon, are classified in groups C01B21/06 or C01B21/0605&#160;-&#160;C01B21/076. Compounds of nitrogen with more than one element chosen from metals, silicon or boron are classified in C01B21/0602<br> Documents relating to several specific binary compounds are classified in C01B21/06 only and receive the indexing codes chosen from C01B21/0602&#160;-&#160;C01B21/076 to identify the specific compounds 	C01B21/06	C01B21/06		442
C01B21/0602	9	{with two or more other elements chosen from metals, silicon or boron}	C01B21/06	C01B21/06		304
C01B21/0605	9	{Binary compounds of nitrogen with carbon}	C01B21/06	C01B21/06		847
C01B21/0607	9	{with alkali metals}	C01B21/06	C01B21/06		16
C01B21/061	10	{with lithium}	C01B21/06	C01B21/06		52
C01B21/0612	9	{with alkaline-earth metals, beryllium or magnesium}	C01B21/06	C01B21/06		68
C01B21/0615	9	{with transition metals other than titanium, zirconium or hafnium}	C01B21/06	C01B21/06		62
C01B21/0617	10	{with vanadium, niobium or tantalum}	C01B21/06	C01B21/06		229
C01B21/062	10	{with chromium, molybdenum or tungsten}	C01B21/06	C01B21/06		169
C01B21/0622	10	{with iron, cobalt or nickel}	C01B21/06	C01B21/06		157
C01B21/0625	10	{with copper}	C01B21/06	C01B21/06		20
C01B21/0627	10	{with one or more rare earth metals}	C01B21/06	C01B21/06		30
C01B21/063	10	{with one or more actinides, e.g. UN, PuN}	C01B21/06	C01B21/06		75
C01B21/0632	9	{with gallium, indium or thallium}	C01B21/06	C01B21/06		198
C01B21/0635	9	{with germanium, tin or lead}	C01B21/06	C01B21/06		21
C01B21/0637	9	{with metals not specified in groups C01B21/0607&#160;-&#160;C01B21/0635, other than aluminium, titanium, zirconium or hafnium}	C01B21/06	C01B21/06		25
C01B21/064	9	with boron	C01B21/064	C01B21/064		962
C01B21/0641	10	{Preparation by direct nitridation of elemental boron}	C01B21/064	C01B21/064		88
C01B21/0643	10	{Preparation from boron halides}	C01B21/064	C01B21/064		36
C01B21/0645	10	{Preparation by carboreductive nitridation}	C01B21/064	C01B21/064		58
C01B21/0646	10	{Preparation by pyrolysis of boron and nitrogen containing compounds}	C01B21/064	C01B21/064		137
C01B21/0648	10	{After-treatment, e.g. grinding, purification (transformation of hexagonal into cubic or wurtzitic boron nitride C04B35/5831)}	C01B21/064	C01B21/064		651
C01B21/068	9	with silicon	C01B21/068	C01B21/068		510
C01B21/0682	10	{Preparation by direct nitridation of silicon}	C01B21/068	C01B21/068		274
C01B21/0685	10	{Preparation by carboreductive nitridation}	C01B21/068	C01B21/068		184
C01B21/0687	10	{After-treatment, e.g. grinding, purification}	C01B21/068	C01B21/068		145
C01B21/072	9	with aluminium	C01B21/072	C01B21/072		335
C01B21/0722	10	{Preparation by direct nitridation of aluminium}	C01B21/072	C01B21/072		198
C01B21/0724	11	{using a plasma}	C01B21/072	C01B21/072		46
C01B21/0726	10	{Preparation by carboreductive nitridation}	C01B21/072	C01B21/072		324
C01B21/0728	10	{After-treatment, e.g. grinding, purification}	C01B21/072	C01B21/072		160
C01B21/076	9	with titanium or zirconium {or hafnium}	C01B21/076	C01B21/076		297
C01B21/0761	10	{Preparation by direct nitridation of titanium, zirconium or hafnium}	C01B21/076	C01B21/076		56
C01B21/0763	10	{Preparation from titanium, zirconium or hafnium halides}	C01B21/076	C01B21/076		67
C01B21/0765	10	{Preparation by carboreductive nitridation}	C01B21/076	C01B21/076		42
C01B21/0766	10	{Preparation by pyrolysis of nitrogen containing titanium, zirconium or hafnium compounds}	C01B21/076	C01B21/076		12
C01B21/0768	10	{After-treatment, e.g. grinding, purification}	C01B21/076	C01B21/076		61
C01B21/08	8	Hydrazoic acid; Azides; Halogen azides	C01B21/08	C01B21/08		153
C01B21/082	8	Compounds containing nitrogen and non-metals {and optionally metals}(C01B21/06, C01B21/08 take precedence)	C01B21/082	C01B21/082		342
C01B21/0821	9	{Oxynitrides of metals, boron or silicon}	C01B21/082	C01B21/082		162
C01B21/0823	10	{Silicon oxynitrides}	C01B21/082	C01B21/082		57
C01B21/0825	10	{Aluminium oxynitrides}	C01B21/082	C01B21/082		39
C01B21/0826	10	{Silicon aluminium oxynitrides, i.e. sialons}	C01B21/082	C01B21/082		101
C01B21/0828	9	{Carbonitrides or oxycarbonitrides of metals, boron or silicon}	C01B21/082	C01B21/082		341
C01B21/083	9	containing one or more halogen atoms	C01B21/083	C01B21/083		133
C01B21/0832	10	{Binary compounds of nitrogen with halogens}	C01B21/083	C01B21/083		129
C01B21/0835	11	{Nitrogen trifluoride}	C01B21/083	C01B21/083		73
C01B21/0837	12	{Purification}	C01B21/083	C01B21/083		44
C01B21/084	10	containing also one or more oxygen atoms, e.g. nitrosyl halides	C01B21/084	C01B21/084		52
C01B21/0842	11	{Halides of nitrogen oxides}	C01B21/084	C01B21/084		20
C01B21/0844	12	{Nitrosyl fluoride}	C01B21/084	C01B21/084		21
C01B21/0846	12	{Nitrosyl chloride}	C01B21/084	C01B21/084		67
C01B21/0848	11	{Nitrosyl perchlorate}	C01B21/084	C01B21/084		13
C01B21/086	9	containing one or more sulfur atoms	C01B21/086	C01B21/086		565
C01B21/0865	10	{Binary compounds of nitrogen with sulfur}	C01B21/086	C01B21/086		19
C01B21/087	9	containing one or more hydrogen atoms	C01B21/087	C01B21/087		129
C01B21/088	10	containing also one or more halogen atoms	C01B21/088	C01B21/088		14
C01B21/09	11	Halogeno-amines, e.g. chloramine	C01B21/09	C01B21/09		22
C01B21/091	12	{Chloramine, i.e. NH2Cl or dichloramine, i.e. NHCl2}	C01B21/09	C01B21/09		53
C01B21/092	10	containing also one or more metal atoms	C01B21/092	C01B21/092		38
C01B21/0923	11	{Metal imides or amides}	C01B21/092	C01B21/092		146
C01B21/0926	12	{of alkali metals}	C01B21/092	C01B21/092		99
C01B21/093	10	containing also one or more sulfur atoms	C01B21/093	C01B21/093		212
C01B21/0935	11	{Imidodisulfonic acid; Nitrilotrisulfonic acid; Salts thereof}	C01B21/093	C01B21/093		157
C01B21/094	11	Nitrosyl containing acids	C01B21/094	C01B21/094		29
C01B21/096	11	Amidosulfonic acid; Salts thereof	C01B21/096	C01B21/096		225
C01B21/097	9	containing phosphorus atoms	C01B21/097	C01B21/097		175
C01B21/0975	10	{containing also one or more sulfur atoms}	C01B21/097	C01B21/097		27
C01B21/098	10	Phosphonitrilic dihalides; Polymers thereof	C01B21/098	C01B21/098		28
C01B21/0983	11	{Phosphonitrilic difluorides; Polymers thereof}	C01B21/098	C01B21/098		5
C01B21/0986	11	{Phosphonitrilic dichlorides; Polymers thereof}	C01B21/098	C01B21/098		178
C01B21/12	9	Carbamic acid {or thiocarbamic acid}; Salts thereof	C01B21/12	C01B21/12		66
C01B21/125	10	{Metal carbamates}	C01B21/12	C01B21/12		34
C01B21/14	9	Hydroxylamine; Salts thereof	C01B21/14	C01B21/14		56
C01B21/1409	10	{Preparation}	C01B21/14	C01B21/14		65
C01B21/1418	11	{by catalytic reduction of nitrogen oxides or nitrates with hydrogen}	C01B21/14	C01B21/14		209
C01B21/1427	11	{by reduction of nitrogen oxides or nitrites with bisulfite or sulfur dioxide, e.g. by the Raschig process}	C01B21/14	C01B21/14		59
C01B21/1436	11	{by reaction in the gas phase, e.g. of nitrogen, hydrogen and oxygen}	C01B21/14	C01B21/14		7
C01B21/1445	11	{of hydoxylamine from its salts}	C01B21/14	C01B21/14		42
C01B21/1454	11	{of hydroxylamine salts by processes not covered by one or more of groups C01B21/1418&#160;-&#160;C01B21/1445, e.g. by conversion of one salt into another}	C01B21/14	C01B21/14		92
C01B21/1463	10	{Concentration}	C01B21/14	C01B21/14		12
C01B21/1472	10	{Separation}	C01B21/14	C01B21/14		29
C01B21/1481	10	{Purification}	C01B21/14	C01B21/14		40
C01B21/149	10	{Stabilisation}	C01B21/14	C01B21/14		28
C01B21/16	9	Hydrazine; Salts thereof	C01B21/16	C01B21/16		530
C01B21/20	8	Nitrogen oxides; Oxyacids of nitrogen; Salts thereof	C01B21/20	C01B21/20		173
C01B21/203	9	{Preparation of nitrogen oxides using a plasma or an electric discharge}	C01B21/20	C01B21/20		250
C01B21/206	9	{Nitric anhydride (N2O5) (C01B21/203 takes precedence)}	C01B21/20	C01B21/20		17
C01B21/22	9	Nitrous oxide (N2O) {(C01B21/203 takes precedence)}	C01B21/22	C01B21/22		183
C01B21/24	9	Nitric oxide (NO) {(C01B21/203 takes precedence)}	C01B21/24	C01B21/24		286
C01B21/26	10	Preparation by catalytic {or non-catalytic} oxidation of ammonia	C01B21/26	C01B21/26		949
C01B21/262	11	{obtaining nitrogen dioxide or tetroxide}	C01B21/26	C01B21/26		33
C01B21/265	11	{characterised by the catalyst}	C01B21/26	C01B21/26		277
C01B21/267	11	{Means for preventing deterioration or loss of catalyst or for recovering lost catalyst}	C01B21/26	C01B21/26		69
C01B21/28	11	Apparatus	C01B21/28	C01B21/28		170
C01B21/30	10	Preparation by oxidation of nitrogen {(C01B21/26 takes precedence)}	C01B21/30	C01B21/30		213
C01B21/32	11	Apparatus	C01B21/32	C01B21/32		101
C01B21/34	9	Nitrogen trioxide (N2O3) {(C01B21/203 takes precedence)}	C01B21/34	C01B21/34		11
C01B21/36	9	Nitrogen dioxide (NO2, N2O4) ({C01B21/203} , C01B21/26, C01B21/30 take precedence)	C01B21/36	C01B21/36		219
C01B21/38	9	Nitric acid	C01B21/38	C01B21/38		227
C01B21/40	10	Preparation by absorption of oxides of nitrogen {(C01B21/26 takes precedence)}	C01B21/40	C01B21/40		269
C01B21/42	10	Preparation from nitrates	C01B21/42	C01B21/42		137
C01B21/44	10	Concentration {(C01B21/40 takes precedence)}	C01B21/44	C01B21/44		209
C01B21/46	10	Purification; Separation {; Stabilisation (C01B21/40 takes precedence)}	C01B21/46	C01B21/46		496
C01B21/48	9	Methods for the preparation of nitrates in general (particular individual nitrates, see the relevant groups of subclasses C01B&#160;-&#160;C01G, according to the cation)	C01B21/48	C01B21/48		86
C01B21/50	9	Nitrous acid; Salts thereof	C01B21/50	C01B21/50		199
C01B23/00	7	Noble gases; Compounds thereof (liquefying F25J{; noble gases obtained by rectification F25J3/028})	C01B23/00	C01B23/00		680
C01B23/0005	8	{Compounds of noble gases}	C01B23/00	C01B23/00		45
C01B23/001	8	{Purification or separation processes of noble gases}	C01B23/00	C01B23/00		70
C01B23/0015	9	{Chemical processing only}	C01B23/00	C01B23/00		25
C01B23/0021	10	{by oxidation}	C01B23/00	C01B23/00		30
C01B23/0026	10	{by reduction}	C01B23/00	C01B23/00		15
C01B23/0031	10	{by complexation}	C01B23/00	C01B23/00		1
C01B23/0036	9	{Physical processing only}	C01B23/00	C01B23/00		192
C01B23/0042	10	{by making use of membranes}	C01B23/00	C01B23/00		97
C01B23/0047	11	{characterised by the membrane}	C01B23/00	C01B23/00		87
C01B23/0052	10	{by adsorption in solids}	C01B23/00	C01B23/00		123
C01B23/0057	11	{characterised by the adsorbent}	C01B23/00	C01B23/00		83
C01B23/0063	12	{Carbon based materials}	C01B23/00	C01B23/00		53
C01B23/0068	12	{Zeolites}	C01B23/00	C01B23/00		53
C01B23/0073	12	{Other molecular sieve materials}	C01B23/00	C01B23/00		24
C01B23/0078	11	{Temperature swing adsorption}	C01B23/00	C01B23/00		32
C01B23/0084	11	{in getters}	C01B23/00	C01B23/00		30
C01B23/0089	10	{by absorption in liquids}	C01B23/00	C01B23/00		23
C01B23/0094	9	{Combined chemical and physical processing}<br><br><u>NOTE</u><br><br>In this group, processing steps are indexed with codes chosen from C01B2210/0001&#160;-&#160;C01B2210/0025.	C01B23/00	C01B23/00		197
C01B25/00	7	Phosphorus; Compounds thereof ({C01B6/00} , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16)	C01B25/00	C01B25/00		381
C01B25/003	8	{Phosphorus}	C01B25/00	C01B25/00		465
C01B25/006	9	{Stabilisation (C01B25/04 takes precedence)}	C01B25/00	C01B25/00		88
C01B25/01	8	Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds	C01B25/01	C01B25/01		667
C01B25/02	8	Preparation of phosphorus	C01B25/02	C01B25/02		460
C01B25/023	9	of red phosphorus	C01B25/023	C01B25/023		95
C01B25/027	9	of yellow phosphorus	C01B25/027	C01B25/027		258
C01B25/04	8	Purification of phosphorus	C01B25/04	C01B25/04		66
C01B25/043	9	of red phosphorus	C01B25/043	C01B25/043		14
C01B25/047	9	of yellow phosphorus	C01B25/047	C01B25/047		125
C01B25/06	8	Hydrogen phosphides	C01B25/06	C01B25/06		333
C01B25/08	8	Other phosphides	C01B25/08	C01B25/08		536
C01B25/081	9	{of alkali metals, alkaline-earth metals or magnesium}	C01B25/08	C01B25/08		44
C01B25/082	9	{of boron, aluminium, gallium or indium}	C01B25/08	C01B25/08		22
C01B25/084	10	{of boron}	C01B25/08	C01B25/08		15
C01B25/085	10	{of aluminium}	C01B25/08	C01B25/08		13
C01B25/087	10	{of gallium or indium}	C01B25/08	C01B25/08		110
C01B25/088	9	{containing plural metal}	C01B25/08	C01B25/08		180
C01B25/10	8	Halides or oxyhalides of phosphorus	C01B25/10	C01B25/10		541
C01B25/12	8	Oxides of phosphorus	C01B25/12	C01B25/12		312
C01B25/14	8	Sulfur, selenium, or tellurium compounds of phosphorus	C01B25/14	C01B25/14		649
C01B25/16	8	Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C01B15/00)	C01B25/16	C01B25/16		236
C01B25/161	9	{containing at least one phosphorus atom with an oxidation number less than five, other than those mentioned below; Salts thereof}	C01B25/16	C01B25/16		1
C01B25/163	9	Phosphorous acid; Salts thereof	C01B25/163	C01B25/163		140
C01B25/165	9	Hypophosphorous acid; Salts thereof	C01B25/165	C01B25/165		85
C01B25/168	9	Pyrophosphorous acid; Salts thereof	C01B25/168	C01B25/168		12
C01B25/18	9	Phosphoric acid	C01B25/18	C01B25/18		217
C01B25/185	10	{Preparation neither from elemental phosphorus or phosphoric anhydride nor by reacting phosphate-containing material with an acid, e.g. by reacting phosphate-containing material with an ion-exchange resin or an acid salt used alone}	C01B25/18	C01B25/18		112
C01B25/20	10	Preparation from elemental phosphorus or phosphoric anhydride	C01B25/20	C01B25/20		281
C01B25/22	10	Preparation by reacting phosphate-containing material with an acid, e.g. wet process	C01B25/22	C01B25/22		522
C01B25/2204	11	{Arrangements of vessels used in reacting phosphate-containing material in wet process}	C01B25/22	C01B25/22		40
C01B25/2208	11	{with an acid or a mixture of acids other than sulfuric acid}	C01B25/22	C01B25/22		46
C01B25/2212	12	{with hydrochloric acid or hydrogen chloride in aqueous medium}	C01B25/22	C01B25/22		47
C01B25/2216	12	{with nitric acid or nitrous vapours in aqueous medium}	C01B25/22	C01B25/22		26
C01B25/222	11	with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen	C01B25/222	C01B25/222		194
C01B25/223	12	only one form of calcium sulfate being formed	C01B25/223	C01B25/223		68
C01B25/2235	13	{Anhydrite processes}	C01B25/223	C01B25/223		16
C01B25/225	13	Dihydrate process	C01B25/225	C01B25/225		132
C01B25/226	13	Hemihydrate process	C01B25/226	C01B25/226		67
C01B25/228	12	one form of calcium sulfate being formed and then converted to another form	C01B25/228	C01B25/228		13
C01B25/2285	13	{Dihydrate-anhydrite or hemihydrate-anhydrite process}	C01B25/228	C01B25/228		10
C01B25/229	13	Hemihydrate-dihydrate process	C01B25/229	C01B25/229		27
C01B25/2295	14	{the conversion being performed in one or more vessels different from those used for reaction after separation of phosphoric acid}	C01B25/229	C01B25/229		15
C01B25/231	13	Dihydrate-hemihydrate process	C01B25/231	C01B25/231		22
C01B25/232	12	Preparation by reacting phosphate containing material with concentrated sulfuric acid and subsequently lixiviating the obtained mass, e.g. clinker process	C01B25/232	C01B25/232		38
C01B25/234	10	Purification; Stabilisation; Concentration (purification concomitant with preparation C01B25/22; preparation involving solvent-solvent extraction C01B25/46)	C01B25/234	C01B25/234		511
C01B25/2343	11	{Concentration concomitant with purification, e.g. elimination of fluorine}	C01B25/234	C01B25/234		123
C01B25/2346	12	{Concentration}	C01B25/234	C01B25/234		132
C01B25/235	11	Clarification; Stabilisation to prevent post-precipitation of dissolved impurities	C01B25/235	C01B25/235		153
C01B25/237	11	Selective elimination of impurities {(C01B25/2343 takes precedence)}	C01B25/237	C01B25/237		134
C01B25/2372	12	{Anionic impurities, e.g. silica or boron compounds}	C01B25/237	C01B25/237		40
C01B25/2375	13	{Fluoride or fluosilicate anion}	C01B25/237	C01B25/237		106
C01B25/2377	13	{Sulfate}	C01B25/237	C01B25/237		42
C01B25/238	12	Cationic impurities {, e.g. arsenic compounds}	C01B25/238	C01B25/238		322
C01B25/24	9	Condensed phosphoric acids	C01B25/24	C01B25/24		176
C01B25/26	9	Phosphates (perphosphates C01B15/16)	C01B25/26	C01B25/26		400
C01B25/265	10	{General methods for obtaining phosphates}	C01B25/26	C01B25/26		133
C01B25/28	10	Ammonium phosphates	C01B25/28	C01B25/28		846
C01B25/30	10	Alkali metal phosphates	C01B25/30	C01B25/30		703
C01B25/301	11	{Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates}	C01B25/30	C01B25/30		323
C01B25/303	12	{with elimination of impurities}	C01B25/30	C01B25/30		117
C01B25/305	11	{Preparation from phosphorus-containing compounds by alkaline treatment}	C01B25/30	C01B25/30		142
C01B25/306	12	{from phosphates}	C01B25/30	C01B25/30		163
C01B25/308	11	{Methods for converting an alkali metal orthophosphate into another one; Purification; Decolorasing; Dehydrating; Drying}	C01B25/30	C01B25/30		244
C01B25/32	10	Phosphates of magnesium, calcium, strontium, or barium	C01B25/32	C01B25/32		1206
C01B25/321	11	{Methods for converting an alkaline earth metal ortho-phosphate into another ortho-phosphate (by reaction, e.g. of phosphate rock with phosphoric acid C01B25/322)}	C01B25/32	C01B25/32		49
C01B25/322	11	{Preparation by neutralisation of orthophosphoric acid}	C01B25/32	C01B25/32		350
C01B25/324	11	{Preparation from a reaction solution obtained by acidifying with an acid other than orthophosphoric acid}	C01B25/32	C01B25/32		100
C01B25/325	11	{Preparation by double decomposition}	C01B25/32	C01B25/32		396
C01B25/327	11	{After-treatment}	C01B25/32	C01B25/32		326
C01B25/328	11	{Defluorination during or after the preparation}	C01B25/32	C01B25/32		124
C01B25/34	11	Magnesium phosphates	C01B25/34	C01B25/34		106
C01B25/36	10	Aluminium phosphates	C01B25/36	C01B25/36		327
C01B25/37	10	Phosphates of heavy metals	C01B25/37	C01B25/37		629
C01B25/372	11	{of titanium, vanadium, zirconium, niobium, hafnium or tantalum}	C01B25/37	C01B25/37		269
C01B25/375	11	{of iron}	C01B25/37	C01B25/37		1944
C01B25/377	11	{of manganese}	C01B25/37	C01B25/37		110
C01B25/38	10	Condensed phosphates	C01B25/38	C01B25/38		60
C01B25/385	11	{of alkaline-earth metals or magnesium}	C01B25/38	C01B25/38		27
C01B25/39	11	of alkali metals	C01B25/39	C01B25/39		47
C01B25/395	12	{Preparation and dehydrating}	C01B25/39	C01B25/39		122
C01B25/40	11	Polyphosphates	C01B25/40	C01B25/40		106
C01B25/405	12	{of ammonium}	C01B25/40	C01B25/40		562
C01B25/41	12	of alkali metals	C01B25/41	C01B25/41		129
C01B25/412	13	{Preparation from alkali metal orthophosphates}	C01B25/41	C01B25/41		130
C01B25/414	14	{Apparatus}	C01B25/41	C01B25/41		47
C01B25/416	14	{Pure alkali metal polyphosphates from impure starting materials}	C01B25/41	C01B25/41		25
C01B25/418	13	{After-treatment}	C01B25/41	C01B25/41		108
C01B25/42	11	Pyrophosphates	C01B25/42	C01B25/42		327
C01B25/425	12	{of alkali metals}	C01B25/42	C01B25/42		188
C01B25/44	11	Metaphosphates	C01B25/44	C01B25/44		95
C01B25/445	12	of alkali metals	C01B25/445	C01B25/445		168
C01B25/45	10	containing plural metal, or metal and ammonium	C01B25/45	C01B25/45		5928
C01B25/451	11	{containing metal and ammonium}	C01B25/45	C01B25/45		512
C01B25/455	10	containing halogen {(completely halogenated alkali metal phosphates C01D, e.g. lithium hexafluorophosphate C01D15/005)}	C01B25/455	C01B25/455		787
C01B25/4555	11	{Hypochlorite-phosphate double salts, e.g. 4(Na3PO411H2O). NaOCl or so-called chlorinated trisodium phosphate}	C01B25/455	C01B25/455		31
C01B25/46	9	Preparation involving solvent-solvent extraction (solvent extraction in general B01D11/00)	C01B25/46	C01B25/46		153
C01B25/461	10	{the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound (selective extraction of impurities contained in acid C01B25/237)}<br><br><u>NOTE</u><br><br>The extracting agent may be diluted with a compound or a mixture of compounds which are not solvents for phosphoric acid, e.g. a hydrocarbon.<br>Documents which belong to more than one subgroup of C01B25/462&#160;-&#160;C01B25/466 are classified by a combination, e.g. C01B25/462 +B4+B8.	C01B25/46	C01B25/46		78
C01B25/462	11	{the extracting agent being alcohol or a mixture of alcohols}	C01B25/46	C01B25/46		56
C01B25/463	11	{the extracting agent being a ketone or a mixture of ketones}	C01B25/46	C01B25/46		23
C01B25/464	11	{the extracting agent being an ether or a mixture of ethers}	C01B25/46	C01B25/46		9
C01B25/465	11	{the extracting agent being an ester or a mixture of esters}	C01B25/46	C01B25/46		25
C01B25/466	11	{the extracting agent being a nitrogenous solvent or a mixture of nitrogenous solvents such as amines or amides}	C01B25/46	C01B25/46		7
C01B25/467	10	{the extracting agent being already present during the phosphate-containing material reaction step}	C01B25/46	C01B25/46		3
C01B25/468	10	{the extraction being performed on the reaction slurry itself, i.e. without separating the acid (C01B25/232 takes precedence)}	C01B25/46	C01B25/46		10
C01B32/00	7	Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48)	C01B32/00	C01B32/00		2103
C01B32/05	8	Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30	C01B32/05	C01B32/05		12618
C01B32/10	8	Carbon fluorides, e.g. [CF]nor [C2F]n(graphite intercalation thereof C01B32/22)	C01B32/10	C01B32/10		218
C01B32/15	8	Nano-sized carbon materials	C01B32/15	C01B32/15		4434
C01B32/152	9	Fullerenes	C01B32/152	C01B32/152		156
C01B32/154	10	Preparation	C01B32/154	C01B32/154		288
C01B32/156	10	After-treatment	C01B32/156	C01B32/156		559
C01B32/158	9	Carbon nanotubes<br><br><u>NOTE</u><br><br>In groups C01B32/158 - C01B32/18, it is desirable to add indexing codes of C01B2202/00 - C01B2202/36 for structural aspects or properties of carbon nanotubes.	C01B32/158	C01B32/158		1164
C01B32/159	10	single-walled	C01B32/159	C01B32/159		680
C01B32/16	10	Preparation	C01B32/16	C01B32/16		2007
C01B32/162	11	characterised by catalysts	C01B32/162	C01B32/162		2321
C01B32/164	11	involving continuous processes	C01B32/164	C01B32/164		338
C01B32/166	11	in liquid phase	C01B32/166	C01B32/166		119
C01B32/168	10	After-treatment	C01B32/168	C01B32/168		2782
C01B32/17	11	Purification	C01B32/17	C01B32/17		481
C01B32/172	11	Sorting	C01B32/172	C01B32/172		233
C01B32/174	11	Derivatisation; Solubilisation; Dispersion in solvents	C01B32/174	C01B32/174		1742
C01B32/176	11	Cutting	C01B32/176	C01B32/176		86
C01B32/178	11	Opening; Filling	C01B32/178	C01B32/178		113
C01B32/18	9	Nanoonions; Nanoscrolls; Nanohorns; Nanocones; Nanowalls	C01B32/18	C01B32/18		588
C01B32/182	9	Graphene	C01B32/182	C01B32/182		1232
C01B32/184	10	Preparation	C01B32/184	C01B32/184		4616
C01B32/186	11	by chemical vapour deposition [CVD]	C01B32/186	C01B32/186		2014
C01B32/188	11	by epitaxial growth	C01B32/188	C01B32/188		487
C01B32/19	11	by exfoliation	C01B32/19	C01B32/19		1949
C01B32/192	12	starting from graphitic oxides	C01B32/192	C01B32/192		624
C01B32/194	10	After-treatment	C01B32/194	C01B32/194		4474
C01B32/196	11	Purification	C01B32/196	C01B32/196		227
C01B32/198	10	Graphene oxide	C01B32/198	C01B32/198		2338
C01B32/20	8	Graphite<br><br><u>NOTE</u><br><br>In groups C01B32/20 - C01B32/196, it is desirable to add indexing codes of C01B2204/00 - C01B2204/32 for structural aspects or properties of graphene.	C01B32/20	C01B32/20		961
C01B32/205	9	Preparation	C01B32/205	C01B32/205		2847
C01B32/21	9	After-treatment	C01B32/21	C01B32/21		2191
C01B32/215	10	Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite	C01B32/215	C01B32/215		885
C01B32/22	10	Intercalation	C01B32/22	C01B32/22		289
C01B32/225	11	Expansion; Exfoliation	C01B32/225	C01B32/225		732
C01B32/23	10	Oxidation	C01B32/23	C01B32/23		725
C01B32/25	8	Diamond	C01B32/25	C01B32/25		441
C01B32/26	9	Preparation (by using ultra-high pressure B01J3/06; by crystal growth C30B29/04)	C01B32/26	C01B32/26		673
C01B32/28	9	After-treatment, e.g. purification, irradiation, separation or recovery	C01B32/28	C01B32/28		710
C01B32/30	8	Active carbon	C01B32/30	C01B32/30		548
C01B32/306	9	with molecular sieve properties	C01B32/306	C01B32/306		186
C01B32/312	9	Preparation	C01B32/312	C01B32/312		314
C01B32/318	10	characterised by the starting materials	C01B32/318	C01B32/318		1844
C01B32/324	11	from waste materials, e.g. tyres or spent sulfite pulp liquor	C01B32/324	C01B32/324		1939
C01B32/33	11	from distillation residues of coal or petroleum; from petroleum acid sludge	C01B32/33	C01B32/33		473
C01B32/336	10	characterised by gaseous activating agents	C01B32/336	C01B32/336		2115
C01B32/342	10	characterised by non-gaseous activating agents	C01B32/342	C01B32/342		1171
C01B32/348	11	Metallic compounds	C01B32/348	C01B32/348		2056
C01B32/354	9	After-treatment	C01B32/354	C01B32/354		850
C01B32/36	10	Reactivation or regeneration	C01B32/36	C01B32/36		657
C01B32/366	11	by physical processes, e.g. by irradiation, by using electric current passing through carbonaceous feedstock or by using recyclable inert heating bodies	C01B32/366	C01B32/366		365
C01B32/372	10	Coating; Grafting; Microencapsulation	C01B32/372	C01B32/372		262
C01B32/378	10	Purification	C01B32/378	C01B32/378		223
C01B32/382	10	{Making shaped products, e.g. fibres, spheres, membranes or foam}	C01B32/354	C01B32/382		336
C01B32/384	10	Granulation<br><br><u>NOTE</u><br><br>In this group, the term "granulation" also covers methods of preparation of active carbon using carbonaceous precursors per se and binders, e.g. pitch.	C01B32/384	C01B32/384		360
C01B32/39	9	Apparatus for the preparation thereof	C01B32/39	C01B32/39		923
C01B32/40	8	Carbon monoxide	C01B32/40	C01B32/40		2528
C01B32/50	8	Carbon dioxide	C01B32/50	C01B32/50		3952
C01B32/55	9	Solidifying	C01B32/55	C01B32/55		974
C01B32/60	8	Preparation of carbonates or bicarbonates in general (of percarbonates C01B15/10; of specific carbonates or bicarbonates according to the cation C01B-C01G)	C01B32/60	C01B32/60		361
C01B32/70	8	Compounds containing carbon and sulfur, e.g. thiophosgene	C01B32/70	C01B32/70		623
C01B32/72	9	Carbon disulfide	C01B32/72	C01B32/72		91
C01B32/75	10	Preparation by reacting sulfur or sulfur compounds with hydrocarbons	C01B32/75	C01B32/75		29
C01B32/77	9	Carbon oxysulfide	C01B32/77	C01B32/77		53
C01B32/80	8	Phosgene	C01B32/80	C01B32/80		249
C01B32/90	8	Carbides	C01B32/90	C01B32/90		1271
C01B32/907	9	Oxycarbides; Sulfocarbides; Mixture of carbides	C01B32/907	C01B32/907		340
C01B32/914	9	Carbides of single elements	C01B32/914	C01B32/914		742
C01B32/921	10	Titanium carbide	C01B32/921	C01B32/921		989
C01B32/928	10	Carbides of actinides	C01B32/928	C01B32/928		128
C01B32/935	10	Carbides of alkali metals, strontium, barium or magnesium	C01B32/935	C01B32/935		71
C01B32/942	10	Calcium carbide	C01B32/942	C01B32/942		652
C01B32/949	10	Tungsten or molybdenum carbides	C01B32/949	C01B32/949		671
C01B32/956	10	Silicon carbide	C01B32/956	C01B32/956		1172
C01B32/963	11	Preparation from compounds containing silicon	C01B32/963	C01B32/963		279
C01B32/97	12	Preparation from SiO or SiO2	C01B32/97	C01B32/97		545
C01B32/977	12	Preparation from organic compounds containing silicon	C01B32/977	C01B32/977		365
C01B32/984	12	Preparation from elemental silicon	C01B32/984	C01B32/984		390
C01B32/991	10	Boron carbide	C01B32/991	C01B32/991		336
C01B33/00	7	Silicon; Compounds thereof ({C01B6/00,}C01B21/00, C01B23/00 take precedence; persilicates C01B15/14; carbides C01B32/956)	C01B33/00	C01B33/00		453
C01B33/02	8	Silicon (forming single crystals or homogeneous polycrystalline material with defined structure C30B)	C01B33/02	C01B33/02		2145
C01B33/021	9	Preparation (chemical coating from the vapour phase C23C16/00)	C01B33/021	C01B33/021		1158
C01B33/023	10	by reduction of silica or {free} silica-containing material	C01B33/023	C01B33/023		423
C01B33/025	11	with carbon or a solid carbonaceous material, i.e. carbo-thermal process	C01B33/025	C01B33/025		421
C01B33/027	10	by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material	C01B33/027	C01B33/027		594
C01B33/029	11	by decomposition of monosilane	C01B33/029	C01B33/029		450
C01B33/03	11	by decomposition of silicon halides or halosilanes or reduction thereof with hydrogen as the only reducing agent	C01B33/03	C01B33/03		449
C01B33/031	12	by decomposition of silicon tetraiodide	C01B33/031	C01B33/031		15
C01B33/033	11	by reduction of silicon halides or halosilanes with a metal or a metallic alloy as the only reducing agents	C01B33/033	C01B33/033		174
C01B33/035	11	by decomposition or reduction of gaseous or vaporised silicon compounds in the presence of heated filaments of silicon, carbon or a refractory metal, e.g. tantalum or tungsten, or in the presence of heated silicon rods on which the formed silicon is deposited, a silicon rod being obtained, e.g. Siemens process	C01B33/035	C01B33/035		1020
C01B33/037	9	Purification (by zone-melting C30B13/00)	C01B33/037	C01B33/037		1278
C01B33/039	10	by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon	C01B33/039	C01B33/039		70
C01B33/04	8	Hydrides of silicon	C01B33/04	C01B33/04		430
C01B33/043	9	{Monosilane}	C01B33/04	C01B33/04		287
C01B33/046	9	{Purification}	C01B33/04	C01B33/04		179
C01B33/06	8	Metal silicides (alloys C22)	C01B33/06	C01B33/06		542
C01B33/08	8	Compounds containing halogen	C01B33/08	C01B33/08		393
C01B33/10	9	Compounds containing silicon, fluorine, and other elements	C01B33/10	C01B33/10		62
C01B33/103	10	{Fluosilicic acid; Salts thereof}	C01B33/10	C01B33/10		535
C01B33/107	9	Halogenated silanes	C01B33/107	C01B33/107		542
C01B33/10705	10	{Tetrafluoride}	C01B33/107	C01B33/107		149
C01B33/1071	10	{Tetrachloride, trichlorosilane or silicochloroform, dichlorosilane, monochlorosilane or mixtures thereof}	C01B33/107	C01B33/107		510
C01B33/10715	11	{prepared by reacting chlorine with silicon or a silicon-containing material}	C01B33/107	C01B33/107		40
C01B33/10721	12	{with the preferential formation of tetrachloride}	C01B33/107	C01B33/107		85
C01B33/10726	13	{from silicon}	C01B33/107	C01B33/107		21
C01B33/10731	12	{with the preferential formation of trichlorosilane}	C01B33/107	C01B33/107		19
C01B33/10736	13	{from silicon}	C01B33/107	C01B33/107		32
C01B33/10742	11	{prepared by hydrochlorination of silicon or of a silicon-containing material}	C01B33/107	C01B33/107		103
C01B33/10747	12	{with the preferential formation of tetrachloride}	C01B33/107	C01B33/107		13
C01B33/10752	13	{from silicon}	C01B33/107	C01B33/107		8
C01B33/10757	12	{with the preferential formation of trichlorosilane}	C01B33/107	C01B33/107		59
C01B33/10763	13	{from silicon}	C01B33/107	C01B33/107		152
C01B33/10768	10	{Tetrabromide; Tetraiodide}	C01B33/107	C01B33/107		10
C01B33/10773	10	{Halogenated silanes obtained by disproportionation and molecular rearrangement of halogenated silanes}	C01B33/107	C01B33/107		131
C01B33/10778	10	{Purification}	C01B33/107	C01B33/107		386
C01B33/10784	11	{by adsorption}	C01B33/107	C01B33/107		111
C01B33/10789	12	{the adsorbing material being formed in situ, e.g. by partial hydrolysis}	C01B33/107	C01B33/107		5
C01B33/10794	11	{by forming addition compounds or complexes, the reactant being possibly contained in an adsorbent}	C01B33/107	C01B33/107		26
C01B33/113	8	Silicon oxides; Hydrates thereof {(preparing monoxide by reduction of siliceous material C01B33/182)}	C01B33/113	C01B33/113		1190
C01B33/12	9	Silica; Hydrates thereof, e.g. lepidoic silicic acid	C01B33/12	C01B33/12		3337
C01B33/122	10	{Lepidoic silicic acid}	C01B33/12	C01B33/12		21
C01B33/124	10	{Preparation of adsorbing porous silica not in gel form and not finely divided, i.e. silicon skeletons, by acidic treatment of siliceous materials}	C01B33/12	C01B33/12		154
C01B33/126	10	{Preparation of silica of undetermined type}	C01B33/12	C01B33/12		333
C01B33/128	11	{by acidic treatment of aqueous silicate solutions}	C01B33/12	C01B33/12		102
C01B33/14	10	Colloidal silica, e.g. dispersions, gels, sols	C01B33/14	C01B33/14		557
C01B33/141	11	Preparation of hydrosols or aqueous dispersions	C01B33/141	C01B33/141		355
C01B33/1412	12	{by oxidation of silicon in basic medium}	C01B33/141	C01B33/141		53
C01B33/1415	12	{by suspending finely divided silica in water}	C01B33/141	C01B33/141		33
C01B33/1417	13	{an aqueous dispersion being obtained}	C01B33/141	C01B33/141		102
C01B33/142	12	by acidic treatment of silicates	C01B33/142	C01B33/142		40
C01B33/143	13	of aqueous solutions of silicates	C01B33/143	C01B33/143		208
C01B33/1435	14	{using ion exchangers}	C01B33/143	C01B33/143		126
C01B33/145	11	Preparation of hydroorganosols, organosols or dispersions in an organic medium	C01B33/145	C01B33/145		494
C01B33/146	11	After-treatment of sols ({preparation of hydrosols or aqueous dispersions from hydroorganosols, organosols or dispersions in an organic medium C01B33/141}; preparation of hydroorganosols, organosols or dispersions in an organic medium from hydrosols {or aqueous dispersions}C01B33/145)	C01B33/146	C01B33/146		278
C01B33/1465	12	{"Build-up" of particles using only one sol and a "heel" consisting or not of the sol}	C01B33/146	C01B33/146		17
C01B33/148	12	Concentration; Drying; Dehydration; Stabilisation; Purification {(C01B33/1465 takes precedence)}	C01B33/148	C01B33/148		159
C01B33/1485	13	{Stabilisation, e.g. prevention of gelling; Purification}	C01B33/148	C01B33/148		113
C01B33/149	12	Coating	C01B33/149	C01B33/149		199
C01B33/151	12	by progressively adding a sol to a different sol, i.e. "build-up" of particles using a "heel"	C01B33/151	C01B33/151		25
C01B33/152	11	Preparation of hydrogels	C01B33/152	C01B33/152		228
C01B33/1525	12	{from or via fluosilicic acid or salts thereof}	C01B33/152	C01B33/152		18
C01B33/154	12	by acidic treatment of aqueous silicate solutions	C01B33/154	C01B33/154		313
C01B33/1543	13	{using ion exchangers}	C01B33/154	C01B33/154		40
C01B33/1546	13	{the first formed hydrosol being converted to a hydrogel by introduction into an organic medium immiscible or only partly miscible with water}	C01B33/154	C01B33/154		42
C01B33/155	11	Preparation of hydroorganogels or organogels	C01B33/155	C01B33/155		275
C01B33/157	11	After-treatment of gels	C01B33/157	C01B33/157		271
C01B33/158	12	Purification; Drying; Dehydrating	C01B33/158	C01B33/158		331
C01B33/1585	13	{Dehydration into aerogels}	C01B33/158	C01B33/158		1154
C01B33/159	12	Coating or hydrophobisation	C01B33/159	C01B33/159		285
C01B33/16	10	Preparation of silica xerogels	C01B33/16	C01B33/16		372
C01B33/163	11	{by hydrolysis of organosilicon compounds, e.g. ethyl orthosilicate}	C01B33/16	C01B33/16		195
C01B33/166	11	{by acidification of silicate in the presence of an inert organic phase}	C01B33/16	C01B33/16		44
C01B33/18	10	Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof (preparation of aerogels by dehydrating gels C01B33/158; treatment to enhance the pigmenting or filling properties C09C)	C01B33/18	C01B33/18		3388
C01B33/181	11	{by a dry process}	C01B33/18	C01B33/18		286
C01B33/182	12	{by reduction of a siliceous material, e.g. with a carbonaceous reducing agent and subsequent oxidation of the silicon monoxide formed}	C01B33/18	C01B33/18		107
C01B33/183	12	{by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane}	C01B33/18	C01B33/18		419
C01B33/184	13	{by hydrolysis of tetrafluoride}	C01B33/18	C01B33/18		77
C01B33/185	12	{of crystalline silica-polymorphs having molecular sieve properties, e.g. silicalites}	C01B37/02	C01B33/18		52
C01B33/186	11	{from or via fluosilicic acid or salts thereof by a wet process}	C01B33/18	C01B33/18		205
C01B33/187	11	by acidic treatment of silicates	C01B33/187	C01B33/187		185
C01B33/193	12	of aqueous solutions of silicates	C01B33/193	C01B33/193		945
C01B33/20	8	Silicates (persilicates C01B15/14{; containing aluminium C01B33/26})	C01B33/20	C01B33/20		1183
C01B33/22	9	Magnesium silicates	C01B33/22	C01B33/22		632
C01B33/24	9	Alkaline-earth metal silicates	C01B33/24	C01B33/24		775
C01B33/26	9	Aluminium-containing silicates {, i.e. silico-aluminates}	C01B33/26	C01B33/26		1282
C01B33/28	10	{Base exchange silicates, e.g. zeolites (regeneration B01J49/00)}	C01B33/26	C01B33/28		171
C01B33/2807	11	{Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures}	C01B33/26	C01B33/28		132
C01B33/2815	12	{of type A (UNION CARBIDE trade name; corresponds to GRACE&apos;s types Z-12 or Z-12L)}	C01B33/26	C01B33/28		190
C01B33/2823	13	{from aqueous solutions of an alkali metal aluminate and an alkali metal silicate excluding any other source of alumina or silica}	C01B33/26	C01B33/28		59
C01B33/283	13	{from a reaction mixture containing at least one aluminium silicate or aluminosilicate of a clay-type, e.g. kaolin or metakaolin or its exotherm modification or allophane}	C01B33/26	C01B33/28		14
C01B33/2838	12	{of faujasite type, or type X or Y (UNION CARBIDE trade names; correspond to GRACE&apos;s types Z-14 and Z-14HS, respectively)}	C01B33/26	C01B33/28		73
C01B33/2846	13	{of type X}	C01B33/26	C01B33/28		39
C01B33/2853	13	{of type Y}	C01B33/26	C01B33/28		113
C01B33/2861	12	{of mordenite type, e.g. ptilolite or dachiardite}	C01B33/26	C01B33/28		61
C01B33/2869	12	{of other types characterised by an X-ray spectrum and a definite composition}	C01B33/26	C01B33/28		146
C01B33/2876	12	{from a reacting mixture containing an amine or an organic cation, e.g. a quaternary onium cation-ammonium, phosphonium, stibonium}	C01B33/26	C01B33/28		133
C01B33/2884	12	{the aluminium or the silicon in the network being partly replaced}	C01B33/26	C01B33/28		125
C01B33/2892	12	{containing an element or a compound occluded in the pores of the network, e.g. an oxide already present in the starting reaction mixture}	C01B33/26	C01B33/28		100
C01B33/32	9	Alkali metal silicates ({C01B33/24} , C01B33/26 take precedence)	C01B33/32	C01B33/32		1280
C01B33/325	10	{After-treatment, e.g. purification or stabilisation of solutions, granulation; Dissolution; Obtaining solid silicate, e.g. from a solution by spray-drying, flashing off water or adding a coagulant}<br><br><u>NOTE</u><br><br> In this group, obtaining solid silicate, e.g. as a hydrate of a crystalline silicate, from a solution or a hydrate melt by heating or cooling with or without seeding, is not considered as after-treatment, but classified in group C01B33/32.	C01B33/32	C01B33/32		368
C01B33/36	9	having base-exchange properties but not having molecular sieve properties (regeneration thereof B01J49/00)	C01B33/36	C01B33/36		53
C01B33/38	10	Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type {(activation of naturally occurring clays B01J20/12; pillared layered base-exchange silicates B01J29/049)}	C01B33/38	C01B33/38		251
C01B33/40	11	Clays	C01B33/40	C01B33/40		1295
C01B33/405	12	{not containing aluminium}	C01B33/40	C01B33/40		118
C01B33/42	11	Micas {; Interstratified clay-mica products (delaminated mica or vermiculite platelets obtained by a process involving cation-exchange C04B14/208)}	C01B33/42	C01B33/42		440
C01B33/425	12	{not containing aluminium}	C01B33/42	C01B33/42		26
C01B33/44	11	Products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds, e.g. organoclay material	C01B33/44	C01B33/44		580
C01B33/46	10	Amorphous silicates, e.g. so-called "amorphous zeolites" (crystalline zeolites C01B39/00)	C01B33/46	C01B33/46		606
C01B35/00	7	Boron; Compounds thereof (monoborane, diborane, metal borohydrides or addition complexes thereof C01B6/00; perborates C01B15/12; binary compounds with nitrogen C01B21/06; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; carbides C01B32/991; alloys containing boron C22)	C01B35/00	C01B35/00		130
C01B35/02	8	Boron; Borides	C01B35/02	C01B35/02		92
C01B35/023	9	{Boron}	C01B35/02	C01B35/02		334
C01B35/026	9	{Higher boron hydrides, i.e. containing at least three boron atoms}	C01B35/02	C01B35/02		196
C01B35/04	9	Metal borides	C01B35/04	C01B35/04		765
C01B35/06	8	Boron halogen compounds	C01B35/06	C01B35/06		890
C01B35/061	9	{Halides}	C01B35/06	C01B35/06		162
C01B35/063	9	{Tetrafluoboric acid; Salts thereof}	C01B35/06	C01B35/06		38
C01B35/065	10	{Tetrafluoboric acid}	C01B35/06	C01B35/06		20
C01B35/066	10	{Alkali metal tetrafluoborates}	C01B35/06	C01B35/06		105
C01B35/068	9	{Halogenated hydrides}	C01B35/06	C01B35/06		9
C01B35/08	8	Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium	C01B35/08	C01B35/08		41
C01B35/10	9	Compounds containing boron and oxygen (C01B35/06 takes precedence)	C01B35/10	C01B35/10		682
C01B35/1009	10	{having molecular-sieve properties}	C01B35/10	C01B35/10		125
C01B35/1018	10	{Carbonyl compounds derived from boron hydrides}	C01B35/10	C01B35/10		1
C01B35/1027	10	{Oxides}	C01B35/10	C01B35/10		89
C01B35/1036	11	{Boric anhydride}	C01B35/10	C01B35/10		39
C01B35/1045	10	{Oxyacids}	C01B35/10	C01B35/10		54
C01B35/1054	11	{Orthoboric acid}	C01B35/10	C01B35/10		82
C01B35/1063	12	{Preparation from boron ores or borates using acids or salts}	C01B35/10	C01B35/10		51
C01B35/1072	13	{by means of ammonia-carbon dioxide}	C01B35/10	C01B35/10		2
C01B35/1081	12	{Preparation by working up other natural sources, e.g. seawater}	C01B35/10	C01B35/10		21
C01B35/109	12	{Purification; Separation; Concentration}	C01B35/10	C01B35/10		97
C01B35/12	10	Borates {(C01B35/1063 takes precedence)}	C01B35/12	C01B35/12		515
C01B35/121	11	{of alkali metal}	C01B35/12	C01B35/12		175
C01B35/122	12	{Sodium tetraborates; Hydrates thereof, e.g. borax}	C01B35/12	C01B35/12		26
C01B35/123	13	{Preparation from boron ores or other borates}	C01B35/12	C01B35/12		25
C01B35/124	13	{Preparation by working up natural brines, e.g. seawater}	C01B35/12	C01B35/12		14
C01B35/125	13	{Purification; Concentration; Dehydration; Stabilisation; Other after-treatment}	C01B35/12	C01B35/12		19
C01B35/126	11	{of alkaline-earth metals, beryllium, aluminium or magnesium}	C01B35/12	C01B35/12		89
C01B35/127	11	{of heavy metals}	C01B35/12	C01B35/12		84
C01B35/128	11	{containing plural metal or metal and ammonium}	C01B35/12	C01B35/12		186
C01B35/14	9	Compounds containing boron and nitrogen, phosphorus, sulfur, selenium or tellurium	C01B35/14	C01B35/14		116
C01B35/143	10	{Phosphates}	C01B35/14	C01B35/14		38
C01B35/146	10	{Compounds containing boron and nitrogen, e.g. borazoles (ammonium tetrafluoborates C01B35/063; ammonium borates C01B35/12)}	C01B35/14	C01B35/14		139
C01B37/00	7	Compounds having molecular sieve properties but not having base-exchange properties<br><br><u>NOTE</u><br><br> Compounds classified in main group C01B37/00 are also classified in other groups of class C01 according to their composition 	C01B37/00	C01B37/00		484
C01B37/002	8	{Metallophosphates not containing aluminium, e.g. gallophosphates or silicogallophosphates}	C01B37/00	C01B37/00		38
C01B37/005	8	{Silicates, i.e. so-called metallosilicalites or metallozeosilites}	C01B37/00	C01B37/00		496
C01B37/007	8	{Borosilicates}	C01B37/00	C01B37/00		51
C01B37/02	8	Crystalline silica-polymorphs, e.g. silicalites {dealuminated aluminosilicate zeolites}	C01B37/02	C01B37/02		811
C01B37/04	8	Aluminophosphates [APO compounds]	C01B37/04	C01B37/04		168
C01B37/06	8	Aluminophosphates containing other elements, e.g. metals, boron	C01B37/06	C01B37/06		90
C01B37/065	9	{the other elements being metals only}	C01B37/06	C01B37/06		103
C01B37/08	9	Silicoaluminophosphates [SAPO compounds] {, e.g. CoSAPO}	C01B37/08	C01B37/08		782
C01B39/00	7	Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination (treatment to modify the sorption properties, e.g. shaping using a binder, B01J20/10; treatment to modify the catalytic properties, e.g. combination of treatments to make the zeolites appropriate to their use as a catalyst, B01J29/04; treatment to improve the ion-exchange properties B01J39/14)<br><br><u>NOTE</u><br><br> In this group, the following term is used with the meaning indicated: <br>"zeolites" means:<br>crystalline aluminosilicates with base-exchange and molecular sieve properties, having three-dimensional [3D], microporous lattice framework structure of tetrahedral oxide units;al, microporous lattice framework structure of tetrahedral oxide units;<br>compounds isomorphous to those of the former category, wherein the aluminium or silicon atoms in the framework are partly or wholly replaced by atoms of other elements, e.g. by gallium, germanium, phosphorus or boron.<br> Compounds classified in main group C01B39/00 are also classified in other groups of class C01 according to their composition 	C01B39/00	C01B39/00		392
C01B39/02	8	Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof	C01B39/02	C01B39/02		943
C01B39/023	9	{Preparation of physical mixtures or intergrowth products of zeolites chosen from group C01B39/04 or two or more of groups C01B39/14&#160;-&#160;C01B39/48}	C01B39/02	C01B39/02		215
C01B39/026	9	{After-treatment}	C01B39/02	C01B39/02		1441
C01B39/04	9	using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound	C01B39/04	C01B39/04		1354
C01B39/06	9	Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements {, i.e. by direct or secondary synthesis}	C01B39/06	C01B39/06		398
C01B39/065	10	{Galloaluminosilicates; Group IVB- metalloaluminosilicates; Ferroaluminosilicates}	C01B39/06	C01B39/06		195
C01B39/08	10	the aluminium atoms being wholly replaced	C01B39/08	C01B39/08		311
C01B39/082	11	{Gallosilicates}	C01B39/08	C01B39/08		82
C01B39/085	11	{Group IVB- metallosilicates}	C01B39/08	C01B39/08		358
C01B39/087	11	{Ferrosilicates}	C01B39/08	C01B39/08		50
C01B39/10	10	the replacing atoms being {at least} phosphorus atoms	C01B39/10	C01B39/10		39
C01B39/12	10	the replacing atoms being {at least} boron atoms	C01B39/12	C01B39/12		255
C01B39/14	9	Type A	C01B39/14	C01B39/14		281
C01B39/145	10	{using at least one organic template directing agent}	C01B39/14	C01B39/14		53
C01B39/16	10	from aqueous solutions of an alkali metal aluminate and an alkali metal silicate excluding any other source of alumina or silica but seeds {(C01B39/145 takes precedence)}	C01B39/16	C01B39/16		89
C01B39/18	10	from a reaction mixture containing at least one aluminium silicate or aluminosilicate of a clay type, e.g. kaolin or metakaolin or its exotherm modification or allophane {(C01B39/145 takes precedence)}	C01B39/18	C01B39/18		76
C01B39/20	9	Faujasite type, e.g. type X or Y	C01B39/20	C01B39/20		145
C01B39/205	10	{using at least one organic template directing agent; Hexagonal faujasite; Intergrowth products of cubic and hexagonal faujasite}	C01B39/20	C01B39/20		133
C01B39/22	10	Type X {(C01B39/205 takes precedence)}	C01B39/22	C01B39/22		303
C01B39/24	10	Type Y {(C01B39/205 takes precedence)}	C01B39/24	C01B39/24		602
C01B39/26	9	Mordenite type {(C01B39/023, C01B39/026, C01B39/06 take precedence)}	C01B39/26	C01B39/26		141
C01B39/265	10	{using at least one organic template directing agent}	C01B39/26	C01B39/26		130
C01B39/28	9	Phillipsite or harmotome type {(C01B39/023, C01B39/026, C01B39/06 take precedence)}	C01B39/28	C01B39/28		58
C01B39/30	9	Erionite or offretite type, e.g. zeolite T	C01B39/30	C01B39/30		41
C01B39/305	10	{using at least one organic template directing agent}	C01B39/30	C01B39/30		62
C01B39/32	9	Type L	C01B39/32	C01B39/32		100
C01B39/34	9	Type ZSM-4	C01B39/34	C01B39/34		30
C01B39/36	9	Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11	C01B39/36	C01B39/36		116
C01B39/365	10	{Type ZSM-8; Type ZSM-11; ZSM 5/11 intermediate}	C01B39/36	C01B39/36		91
C01B39/38	10	Type ZSM-5	C01B39/38	C01B39/38		557
C01B39/40	11	using at least one organic template directing agent	C01B39/40	C01B39/40		963
C01B39/42	9	Type ZSM-12	C01B39/42	C01B39/42		97
C01B39/44	9	Ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38	C01B39/44	C01B39/44		62
C01B39/445	10	{using at least one organic template directing agent}	C01B39/44	C01B39/44		94
C01B39/46	9	Other types characterised by their X-ray diffraction pattern and their defined composition {(C01B39/023, C01B39/026, C01B39/06 take precedence)}	C01B39/46	C01B39/46		586
C01B39/48	10	using at least one organic template directing agent	C01B39/48	C01B39/48		1920
C01B39/50	8	Zeolites wherein inorganic bases or salts occlude channels in the lattice framework, e.g. sodalite, cancrinite, nosean, hauynite {(ultramarine C09C1/32)}	C01B39/50	C01B39/50		56
C01B39/52	9	Sodalites	C01B39/52	C01B39/52		33
C01B39/54	8	Phosphates, e.g. APO or SAPO compounds<br><br><u>NOTE</u><br><br> Phosphates having either a poorly defined or a weak base-exchange capacity such as MAPO&apos;s, SAPO&apos;s or BAPO&apos;s are classified in C01B37/00	C01B39/54	C01B39/54		955
C01B2201/00	7	Preparation of ozone by electrical discharge	CPCONLY	C01B2201/00		6
C01B2201/10	8	Dischargers used for production of ozone	CPCONLY	C01B2201/10		199
C01B2201/12	9	Plate-type dischargers	CPCONLY	C01B2201/12		378
C01B2201/14	9	Concentric/tubular dischargers	CPCONLY	C01B2201/14		598
C01B2201/20	8	Electrodes used for obtaining electrical discharge	CPCONLY	C01B2201/20		98
C01B2201/22	9	Constructional details of the electrodes	CPCONLY	C01B2201/22		780
C01B2201/24	9	Composition of the electrodes	CPCONLY	C01B2201/24		254
C01B2201/30	8	Dielectrics used in the electrical dischargers	CPCONLY	C01B2201/30		49
C01B2201/32	9	Constructional details of the dielectrics	CPCONLY	C01B2201/32		294
C01B2201/34	9	Composition of the dielectrics	CPCONLY	C01B2201/34		286
C01B2201/40	8	using several dischargers in series	CPCONLY	C01B2201/40		100
C01B2201/50	8	Part of the product being recycled	CPCONLY	C01B2201/50		10
C01B2201/60	8	Feed streams for electrical dischargers	CPCONLY	C01B2201/60		70
C01B2201/62	9	Air	CPCONLY	C01B2201/62		299
C01B2201/64	9	Oxygen	CPCONLY	C01B2201/64		268
C01B2201/66	9	Pretreatment of the feed	CPCONLY	C01B2201/66		108
C01B2201/70	8	Cooling of the discharger; Means for making cooling unnecessary	CPCONLY	C01B2201/70		186
C01B2201/72	9	by air	CPCONLY	C01B2201/72		116
C01B2201/74	9	by liquid	CPCONLY	C01B2201/74		138
C01B2201/76	10	Water	CPCONLY	C01B2201/76		265
C01B2201/80	8	Additional processes occurring alongside the electrical discharges, e.g. catalytic processes	CPCONLY	C01B2201/80		46
C01B2201/82	9	Treatment with ultraviolet light	CPCONLY	C01B2201/82		57
C01B2201/84	9	Treatment with magnetic fields	CPCONLY	C01B2201/84		16
C01B2201/90	8	Control of the process	CPCONLY	C01B2201/90		307
C01B2202/00	7	Structure or properties of carbon nanotubes	CPCONLY	C01B2202/00		36
C01B2202/02	8	Single-walled nanotubes	CPCONLY	C01B2202/02		1280
C01B2202/04	8	Nanotubes with a specific amount of walls	CPCONLY	C01B2202/04		263
C01B2202/06	8	Multi-walled nanotubes	CPCONLY	C01B2202/06		1049
C01B2202/08	8	Aligned nanotubes	CPCONLY	C01B2202/08		520
C01B2202/10	8	Filled nanotubes	CPCONLY	C01B2202/10		42
C01B2202/20	8	Nanotubes characterized by their properties	CPCONLY	C01B2202/20		178
C01B2202/22	9	Electronic properties	CPCONLY	C01B2202/22		844
C01B2202/24	9	Thermal properties	CPCONLY	C01B2202/24		94
C01B2202/26	9	Mechanical properties	CPCONLY	C01B2202/26		115
C01B2202/28	9	Solid content in solvents	CPCONLY	C01B2202/28		281
C01B2202/30	9	Purity	CPCONLY	C01B2202/30		362
C01B2202/32	9	Specific surface area	CPCONLY	C01B2202/32		274
C01B2202/34	9	Length	CPCONLY	C01B2202/34		695
C01B2202/36	9	Diameter	CPCONLY	C01B2202/36		1065
C01B2203/00	7	Integrated processes for the production of hydrogen or synthesis gas	CPCONLY	C01B2203/00		140
C01B2203/02	8	Processes for making hydrogen or synthesis gas	CPCONLY	C01B2203/02		137
C01B2203/0205	9	containing a reforming step	CPCONLY	C01B2203/0205		582
C01B2203/0211	10	containing a non-catalytic reforming step	CPCONLY	C01B2203/0211		99
C01B2203/0216	11	containing a non-catalytic steam reforming step	CPCONLY	C01B2203/0216		445
C01B2203/0222	11	containing a non-catalytic carbon dioxide reforming step	CPCONLY	C01B2203/0222		168
C01B2203/0227	10	containing a catalytic reforming step	CPCONLY	C01B2203/0227		912
C01B2203/0233	11	the reforming step being a steam reforming step	CPCONLY	C01B2203/0233		5629
C01B2203/0238	11	the reforming step being a carbon dioxide reforming step	CPCONLY	C01B2203/0238		1300
C01B2203/0244	11	the reforming step being an autothermal reforming step, e.g. secondary reforming processes	CPCONLY	C01B2203/0244		1814
C01B2203/025	9	containing a partial oxidation step	CPCONLY	C01B2203/025		727
C01B2203/0255	10	containing a non-catalytic partial oxidation step	CPCONLY	C01B2203/0255		605
C01B2203/0261	10	containing a catalytic partial oxidation step [CPO]	CPCONLY	C01B2203/0261		1475
C01B2203/0266	9	containing a decomposition step	CPCONLY	C01B2203/0266		268
C01B2203/0272	10	containing a non-catalytic decomposition step	CPCONLY	C01B2203/0272		339
C01B2203/0277	10	containing a catalytic decomposition step	CPCONLY	C01B2203/0277		2250
C01B2203/0283	9	containing a CO-shift step, i.e. a water gas shift step	CPCONLY	C01B2203/0283		3045
C01B2203/0288	10	containing two CO-shift steps	CPCONLY	C01B2203/0288		587
C01B2203/0294	10	containing three or more CO-shift steps	CPCONLY	C01B2203/0294		117
C01B2203/04	8	containing a purification step for the hydrogen or the synthesis gas	CPCONLY	C01B2203/04		620
C01B2203/0405	9	Purification by membrane separation	CPCONLY	C01B2203/0405		1896
C01B2203/041	10	In-situ membrane purification during hydrogen production	CPCONLY	C01B2203/041		614
C01B2203/0415	9	Purification by absorption in liquids	CPCONLY	C01B2203/0415		1610
C01B2203/042	9	Purification by adsorption on solids	CPCONLY	C01B2203/042		1094
C01B2203/0425	10	In-situ adsorption process during hydrogen production	CPCONLY	C01B2203/0425		195
C01B2203/043	10	Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration	CPCONLY	C01B2203/043		1824
C01B2203/0435	9	Catalytic purification	CPCONLY	C01B2203/0435		238
C01B2203/044	10	Selective oxidation of carbon monoxide	CPCONLY	C01B2203/044		980
C01B2203/0445	10	Selective methanation	CPCONLY	C01B2203/0445		533
C01B2203/045	10	Purification by catalytic desulfurisation	CPCONLY	C01B2203/045		174
C01B2203/0455	9	Purification by non-catalytic desulfurisation	CPCONLY	C01B2203/0455		90
C01B2203/046	9	Purification by cryogenic separation	CPCONLY	C01B2203/046		563
C01B2203/0465	9	Composition of the impurity	CPCONLY	C01B2203/0465		1252
C01B2203/047	10	the impurity being carbon monoxide	CPCONLY	C01B2203/047		2396
C01B2203/0475	10	the impurity being carbon dioxide	CPCONLY	C01B2203/0475		3061
C01B2203/048	10	the impurity being an organic compound	CPCONLY	C01B2203/048		1369
C01B2203/0485	10	the impurity being a sulfur compound	CPCONLY	C01B2203/0485		1215
C01B2203/049	10	the impurity being carbon	CPCONLY	C01B2203/049		328
C01B2203/0495	10	the impurity being water	CPCONLY	C01B2203/0495		1594
C01B2203/06	8	Integration with other chemical processes	CPCONLY	C01B2203/06		853
C01B2203/061	9	Methanol production	CPCONLY	C01B2203/061		933
C01B2203/062	9	Hydrocarbon production, e.g. Fischer-Tropsch process	CPCONLY	C01B2203/062		1190
C01B2203/063	9	Refinery processes	CPCONLY	C01B2203/063		91
C01B2203/065	10	using hydrotreating, e.g. hydrogenation, hydrodesulfurisation	CPCONLY	C01B2203/065		184
C01B2203/066	9	with fuel cells	CPCONLY	C01B2203/066		2924
C01B2203/067	10	the reforming process taking place in the fuel cell	CPCONLY	C01B2203/067		195
C01B2203/068	9	Ammonia synthesis	CPCONLY	C01B2203/068		690
C01B2203/08	8	Methods of heating or cooling	CPCONLY	C01B2203/08		37
C01B2203/0805	9	Methods of heating the process for making hydrogen or synthesis gas	CPCONLY	C01B2203/0805		525
C01B2203/0811	10	by combustion of fuel	CPCONLY	C01B2203/0811		2056
C01B2203/0816	11	Heating by flames	CPCONLY	C01B2203/0816		748
C01B2203/0822	11	the fuel containing hydrogen	CPCONLY	C01B2203/0822		957
C01B2203/0827	11	at least part of the fuel being a recycle stream	CPCONLY	C01B2203/0827		1072
C01B2203/0833	10	Heating by indirect heat exchange with hot fluids, other than combustion gases, product gases or non-combustive exothermic reaction product gases	CPCONLY	C01B2203/0833		633
C01B2203/0838	10	by heat exchange with exothermic reactions, other than by combustion of fuel	CPCONLY	C01B2203/0838		338
C01B2203/0844	11	the non-combustive exothermic reaction being another reforming reaction as defined in groups C01B2203/02&#160;-&#160;C01B2203/0294	CPCONLY	C01B2203/0844		911
C01B2203/085	10	by electric heating	CPCONLY	C01B2203/085		801
C01B2203/0855	10	by electromagnetic heating	CPCONLY	C01B2203/0855		203
C01B2203/0861	10	by plasma	CPCONLY	C01B2203/0861		503
C01B2203/0866	10	by combination of different heating methods	CPCONLY	C01B2203/0866		636
C01B2203/0872	9	Methods of cooling	CPCONLY	C01B2203/0872		161
C01B2203/0877	10	by direct injection of fluid	CPCONLY	C01B2203/0877		307
C01B2203/0883	10	by indirect heat exchange	CPCONLY	C01B2203/0883		1105
C01B2203/0888	10	by evaporation of a fluid	CPCONLY	C01B2203/0888		57
C01B2203/0894	11	Generation of steam	CPCONLY	C01B2203/0894		709
C01B2203/10	8	Catalysts for performing the hydrogen forming reactions	CPCONLY	C01B2203/10		60
C01B2203/1005	9	Arrangement or shape of catalyst	CPCONLY	C01B2203/1005		289
C01B2203/1011	10	Packed bed of catalytic structures, e.g. particles, packing elements	CPCONLY	C01B2203/1011		487
C01B2203/1017	11	characterised by the form of the structure	CPCONLY	C01B2203/1017		155
C01B2203/1023	10	Catalysts in the form of a monolith or honeycomb	CPCONLY	C01B2203/1023		438
C01B2203/1029	10	Catalysts in the form of a foam	CPCONLY	C01B2203/1029		159
C01B2203/1035	10	Catalyst coated on equipment surfaces, e.g. reactor walls	CPCONLY	C01B2203/1035		287
C01B2203/1041	9	Composition of the catalyst	CPCONLY	C01B2203/1041		1703
C01B2203/1047	10	Group VIII metal catalysts	CPCONLY	C01B2203/1047		1383
C01B2203/1052	11	Nickel or cobalt catalysts	CPCONLY	C01B2203/1052		1618
C01B2203/1058	12	Nickel catalysts	CPCONLY	C01B2203/1058		2022
C01B2203/1064	11	Platinum group metal catalysts	CPCONLY	C01B2203/1064		1567
C01B2203/107	12	Platinum catalysts	CPCONLY	C01B2203/107		959
C01B2203/1076	10	Copper or zinc-based catalysts	CPCONLY	C01B2203/1076		1305
C01B2203/1082	10	Composition of support materials	CPCONLY	C01B2203/1082		2162
C01B2203/1088	10	Non-supported catalysts	CPCONLY	C01B2203/1088		180
C01B2203/1094	10	Promotors or activators	CPCONLY	C01B2203/1094		404
C01B2203/12	8	Feeding the process for making hydrogen or synthesis gas	CPCONLY	C01B2203/12		52
C01B2203/1205	9	Composition of the feed	CPCONLY	C01B2203/1205		307
C01B2203/1211	10	Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas	CPCONLY	C01B2203/1211		463
C01B2203/1217	11	Alcohols	CPCONLY	C01B2203/1217		352
C01B2203/1223	12	Methanol	CPCONLY	C01B2203/1223		1285
C01B2203/1229	12	Ethanol	CPCONLY	C01B2203/1229		375
C01B2203/1235	11	Hydrocarbons	CPCONLY	C01B2203/1235		1021
C01B2203/1241	12	Natural gas or methane	CPCONLY	C01B2203/1241		3804
C01B2203/1247	12	Higher hydrocarbons	CPCONLY	C01B2203/1247		1010
C01B2203/1252	12	Cyclic or aromatic hydrocarbons	CPCONLY	C01B2203/1252		198
C01B2203/1258	9	Pre-treatment of the feed	CPCONLY	C01B2203/1258		932
C01B2203/1264	10	Catalytic pre-treatment of the feed	CPCONLY	C01B2203/1264		93
C01B2203/127	11	Catalytic desulfurisation	CPCONLY	C01B2203/127		671
C01B2203/1276	9	Mixing of different feed components	CPCONLY	C01B2203/1276		528
C01B2203/1282	10	using static mixers	CPCONLY	C01B2203/1282		85
C01B2203/1288	9	Evaporation of one or more of the different feed components	CPCONLY	C01B2203/1288		754
C01B2203/1294	10	Evaporation by heat exchange with hot process stream	CPCONLY	C01B2203/1294		343
C01B2203/14	8	Details of the flowsheet	CPCONLY	C01B2203/14		74
C01B2203/141	9	At least two reforming, decomposition or partial oxidation steps in parallel	CPCONLY	C01B2203/141		426
C01B2203/142	9	At least two reforming, decomposition or partial oxidation steps in series	CPCONLY	C01B2203/142		1258
C01B2203/143	10	Three or more reforming, decomposition or partial oxidation steps in series	CPCONLY	C01B2203/143		378
C01B2203/145	9	At least two purification steps in parallel	CPCONLY	C01B2203/145		101
C01B2203/146	9	At least two purification steps in series	CPCONLY	C01B2203/146		650
C01B2203/147	10	Three or more purification steps in series	CPCONLY	C01B2203/147		370
C01B2203/148	9	involving a recycle stream to the feed of the process for making hydrogen or synthesis gas	CPCONLY	C01B2203/148		1166
C01B2203/16	8	Controlling the process	CPCONLY	C01B2203/16		248
C01B2203/1604	9	Starting up the process	CPCONLY	C01B2203/1604		619
C01B2203/1609	9	Shutting down the process	CPCONLY	C01B2203/1609		156
C01B2203/1614	9	Controlling the temperature	CPCONLY	C01B2203/1614		427
C01B2203/1619	10	Measuring the temperature	CPCONLY	C01B2203/1619		498
C01B2203/1623	10	Adjusting the temperature	CPCONLY	C01B2203/1623		215
C01B2203/1628	9	Controlling the pressure	CPCONLY	C01B2203/1628		201
C01B2203/1633	10	Measuring the pressure	CPCONLY	C01B2203/1633		104
C01B2203/1638	10	Adjusting the pressure	CPCONLY	C01B2203/1638		82
C01B2203/1642	9	Controlling the product	CPCONLY	C01B2203/1642		28
C01B2203/1647	10	Controlling the amount of the product	CPCONLY	C01B2203/1647		56
C01B2203/1652	11	Measuring the amount of product	CPCONLY	C01B2203/1652		44
C01B2203/1657	12	the product being hydrogen	CPCONLY	C01B2203/1657		68
C01B2203/1661	12	the product being carbon monoxide	CPCONLY	C01B2203/1661		34
C01B2203/1666	12	the product being carbon dioxide	CPCONLY	C01B2203/1666		7
C01B2203/1671	10	Controlling the composition of the product	CPCONLY	C01B2203/1671		52
C01B2203/1676	11	Measuring the composition of the product	CPCONLY	C01B2203/1676		95
C01B2203/168	11	Adjusting the composition of the product	CPCONLY	C01B2203/168		35
C01B2203/1685	9	Control based on demand of downstream process	CPCONLY	C01B2203/1685		197
C01B2203/169	9	Controlling the feed	CPCONLY	C01B2203/169		723
C01B2203/1695	9	Adjusting the feed of the combustion	CPCONLY	C01B2203/1695		232
C01B2203/80	8	Aspect of integrated processes for the production of hydrogen or synthesis gas not covered by groups C01B2203/02&#160;-&#160;C01B2203/1695	CPCONLY	C01B2203/80		167
C01B2203/82	9	Several process steps of C01B2203/02&#160;-&#160;C01B2203/08 integrated into a single apparatus	CPCONLY	C01B2203/82		904
C01B2203/84	9	Energy production	CPCONLY	C01B2203/84		765
C01B2203/86	9	Carbon dioxide sequestration	CPCONLY	C01B2203/86		430
C01B2204/00	7	Structure or properties of graphene	CPCONLY	C01B2204/00		117
C01B2204/02	8	Single layer graphene	CPCONLY	C01B2204/02		642
C01B2204/04	8	Specific amount of layers or specific thickness	CPCONLY	C01B2204/04		1535
C01B2204/06	8	Graphene nanoribbons	CPCONLY	C01B2204/06		107
C01B2204/065	9	characterized by their width or by their aspect ratio	CPCONLY	C01B2204/065		35
C01B2204/20	8	Graphene characterized by its properties	CPCONLY	C01B2204/20		490
C01B2204/22	9	Electronic properties	CPCONLY	C01B2204/22		1457
C01B2204/24	9	Thermal properties	CPCONLY	C01B2204/24		452
C01B2204/26	9	Mechanical properties	CPCONLY	C01B2204/26		206
C01B2204/28	9	Solid content in solvents	CPCONLY	C01B2204/28		144
C01B2204/30	9	Purity	CPCONLY	C01B2204/30		383
C01B2204/32	9	Size or surface area	CPCONLY	C01B2204/32		1580
C01B2210/00	7	Purification or separation of specific gases	CPCONLY	C01B2210/00		1
C01B2210/0001	8	Separation or purification processing	CPCONLY	C01B2210/0001		15
C01B2210/0003	9	Chemical processing	CPCONLY	C01B2210/0003		116
C01B2210/0004	10	by oxidation	CPCONLY	C01B2210/0004		122
C01B2210/0006	10	by reduction	CPCONLY	C01B2210/0006		95
C01B2210/0007	10	by complexation	CPCONLY	C01B2210/0007		15
C01B2210/0009	9	Physical processing	CPCONLY	C01B2210/0009		203
C01B2210/001	10	by making use of membranes	CPCONLY	C01B2210/001		168
C01B2210/0012	11	characterised by the membrane	CPCONLY	C01B2210/0012		118
C01B2210/0014	10	by adsorption in solids	CPCONLY	C01B2210/0014		361
C01B2210/0015	11	characterised by the adsorbent	CPCONLY	C01B2210/0015		140
C01B2210/0017	12	Carbon-based materials	CPCONLY	C01B2210/0017		90
C01B2210/0018	12	Zeolites	CPCONLY	C01B2210/0018		114
C01B2210/002	12	Other molecular sieve materials	CPCONLY	C01B2210/002		90
C01B2210/0021	11	Temperature swing adsorption	CPCONLY	C01B2210/0021		30
C01B2210/0023	11	in getters	CPCONLY	C01B2210/0023		14
C01B2210/0025	10	by absorption in liquids	CPCONLY	C01B2210/0025		71
C01B2210/0026	8	Isotopes of the specific gas	CPCONLY	C01B2210/0026		23
C01B2210/0028	8	Separation of the specific gas from gas mixtures containing a minor amount of this specific gas	CPCONLY	C01B2210/0028		212
C01B2210/0029	8	Obtaining noble gases	CPCONLY	C01B2210/0029		10
C01B2210/0031	9	Helium	CPCONLY	C01B2210/0031		282
C01B2210/0032	9	Neon	CPCONLY	C01B2210/0032		36
C01B2210/0034	9	Argon	CPCONLY	C01B2210/0034		123
C01B2210/0035	9	Krypton	CPCONLY	C01B2210/0035		41
C01B2210/0037	9	Xenon	CPCONLY	C01B2210/0037		94
C01B2210/0039	9	Radon	CPCONLY	C01B2210/0039		6
C01B2210/004	9	Separation of a mixture of noble gases	CPCONLY	C01B2210/004		10
C01B2210/0042	8	Making ultrapure specific gas	CPCONLY	C01B2210/0042		78
C01B2210/0043	8	Impurity removed	CPCONLY	C01B2210/0043		49
C01B2210/0045	9	Oxygen	CPCONLY	C01B2210/0045		557
C01B2210/0046	9	Nitrogen	CPCONLY	C01B2210/0046		1360
C01B2210/0048	9	Air	CPCONLY	C01B2210/0048		29
C01B2210/005	9	Carbon monoxide	CPCONLY	C01B2210/005		150
C01B2210/0051	9	Carbon dioxide	CPCONLY	C01B2210/0051		408
C01B2210/0053	9	Hydrogen	CPCONLY	C01B2210/0053		277
C01B2210/0054	9	Hydrogen halides	CPCONLY	C01B2210/0054		4
C01B2210/0056	10	Hydrogen fluoride	CPCONLY	C01B2210/0056		16
C01B2210/0057	10	Hydrogen chloride	CPCONLY	C01B2210/0057		10
C01B2210/0059	10	Hydrogen bromide	CPCONLY	C01B2210/0059		3
C01B2210/006	10	Hydrogen iodide	CPCONLY	C01B2210/006		1
C01B2210/0062	9	Water	CPCONLY	C01B2210/0062		510
C01B2210/0064	9	Hydrogen sulfide	CPCONLY	C01B2210/0064		42
C01B2210/0065	9	Ammonia	CPCONLY	C01B2210/0065		34
C01B2210/0067	9	Hydrogen cyanide	CPCONLY	C01B2210/0067		6
C01B2210/0068	9	Organic compounds	CPCONLY	C01B2210/0068		118
C01B2210/007	10	Hydrocarbons	CPCONLY	C01B2210/007		221
C01B2210/0071	9	Sulfur oxides	CPCONLY	C01B2210/0071		49
C01B2210/0073	9	Sulfur halides	CPCONLY	C01B2210/0073		9
C01B2210/0075	9	Nitrogen oxides	CPCONLY	C01B2210/0075		73
C01B2210/0076	9	Nitrogen halides	CPCONLY	C01B2210/0076		6
C01B2210/0078	9	Noble gases	CPCONLY	C01B2210/0078		12
C01B2210/0079	10	Helium	CPCONLY	C01B2210/0079		25
C01B2210/0081	10	Neon	CPCONLY	C01B2210/0081		15
C01B2210/0082	10	Argon	CPCONLY	C01B2210/0082		89
C01B2210/0084	10	Krypton	CPCONLY	C01B2210/0084		30
C01B2210/0085	10	Xenon	CPCONLY	C01B2210/0085		16
C01B2210/0087	10	Radon	CPCONLY	C01B2210/0087		4
C01B2210/0089	9	Peroxides	CPCONLY	C01B2210/0089		
C01B2210/009	10	Hydrogen peroxide	CPCONLY	C01B2210/009		1
C01B2210/0092	9	Ozone	CPCONLY	C01B2210/0092		11
C01B2210/0093	9	Metals or metal compounds	CPCONLY	C01B2210/0093		4
C01B2210/0095	10	Metals	CPCONLY	C01B2210/0095		7
C01B2210/0096	10	Metal hydrides	CPCONLY	C01B2210/0096		2
C01B2210/0098	9	Other impurities	CPCONLY	C01B2210/0098		92
