|  | C |
SECTION C — CHEMISTRY AND METALLURGY

CHEMISTRY

|  | C01 |
INORGANIC CHEMISTRY (obtaining metal compounds by metallurgical processes Fulltext... Hierarchy... Expanded...C21B, Fulltext... Hierarchy... Expanded...C22B; production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis Fulltext... Hierarchy... Expanded...C25B)

|  | C01B |
NON-METALLIC ELEMENTS, METALLOIDS AND THEIR COMPOUNDS, EXCEPT THOSE COVERED BY SUB-CLASS Fulltext... Hierarchy... Expanded...C01C (arsenic, antimony Fulltext... Hierarchy... Expanded...C22B)

|  | C01B |
Note(s) In the absence of a reference to the contrary, a compound is classified in Fulltext... Hierarchy... Expanded...C01B the last appropriate place. Group Fulltext... Hierarchy... Expanded...C01B 21/10 takes precedence over the groups of this sub-class.

|  | C01B 1/00 - C01B 6/00 |
Hydrogen; Hydrides; Water; Synthesis gas from hydrocarbons

|  | C01B 1/00 |
Hydrogen

|  | C01B 1/02 |
· | Preparation of hydrogen;

|  | C01B 1/03 |
· · | by decomposition or partial oxidation of inorganic compounds

|  | C01B 1/04 |
· · · | by decomposition of ammonia

|  | C01B 1/05 |
· · | by reaction of compounds containing electropositively-bound hydrogen, e.g. water, acids, bases, alcohols, ammonia, with inorganic reducing agents (electrolysis of water C 01 B 13/04)

|  | C01B 1/07 |
· · · | with metals

|  | C01B 1/08 |
· · · | by reaction of steam with inorganic reducing agents, e.g. metals

|  | C01B 1/09 |
· · · · | with moving solid inorganic reducing agents

|  | C01B 1/11 |
· · · | by reaction of metal hydroxides with carbon monoxide

|  | C01B 1/13 |
· · | by decomposition of gaseous or liquid organic compounds (Fulltext... Hierarchy... Expanded...C10G takes precedence)

|  | C01B 1/16 |
· · · | of hydrocarbons

|  | C01B 1/18 |
· · · · | catalytic (Fulltext... Hierarchy... Expanded...C01B 1/20 takes precedence)

|  | C01B 1/20 |
· · · · | with moving solid particles, e.g. of catalyst

|  | C01B 1/26 |
· | Separation; Purification (by liquefying Fulltext... Hierarchy... Expanded...F25J)

|  | C01B 1/27 |
· · | by diffusion

|  | C01B 1/28 |
· · | by chemical means

|  | C01B 1/30 |
· · · | catalytic

|  | C01B 1/32 |
· · | by adsorption or absorption

|  | C01B 1/33 |
· · · | by washing; Regeneration of the washing liquids

|  | C01B 1/35 |
· · · | by solids; Re-activation of used adsorbents

|  | C01B 2/00 |
Gaseous mixtures containing a substantial proportion of hydrogen together with nitrogen or oxides of carbon; Similar mixtures, also containing insignificant proportions of hydrocarbon (production of water gas and synthesis gas from solid carbonaceous material Fulltext... Hierarchy... Expanded...C10J)

|  | C01B 2/02 |
· | Production of gaseous mixtures containing a substantial proportion of hydrogen together with nitrogen or oxides of carbon

|  | C01B 2/04 |
· · | by decomposition of ammonia

|  | C01B 2/06 |
· · | by reaction of steam with carbon monoxide

|  | C01B 2/08 |
· · · | Handling of heat and steam, also in connection with purification by washing (purification of hydrogen Fulltext... Hierarchy... Expanded...C01B 1/26)

|  | C01B 2/10 |
· · · | Use of catalysts

|  | C01B 2/12 |
· · · | Use of moving solid particles, e.g. of catalyst

|  | C01B 2/14 |
· | by reaction of hydrocarbons with gasifying agents, e.g. water, carbon dioxide, air

|  | C01B 2/16 |
· · | catalytic (Fulltext... Hierarchy... Expanded...C01B 2/18 takes precedence)

|  | C01B 2/18 |
· · | with moving solid particles, e.g. of catalyst

|  | C01B 2/20 |
· · · | according to the "moving bed" type

|  | C01B 2/22 |
· · · | according to the "fluidised bed" type

|  | C01B 2/24 |
· · | using solid oxidising agent as the gasifying agent (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B 2/18-C01B 2/22 take precedence)

|  | C01B 2/26 |
· · | followed by a reaction covered by group Fulltext... Hierarchy... Expanded...C01B 2/06

|  | C01B 2/28 |
· | by decomposition of gaseous liquid organic compounds (Fulltext... Hierarchy... Expanded...C10G takes precedence; coking liquid carbonaceous materials Fulltext... Hierarchy... Expanded...C10B 55/00)

|  | C01B 2/30 |
· | Preparation or purification of gas mixtures for the synthesis of ammonia

|  | C01B 4/00 |
Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3+D2NH2+HD (separation of isotopes Fulltext... Hierarchy... Expanded...B01D 59/00; other chemical reactions to form compounds of hydrogen isotopes, see the relevant groups for hydrogen compounds in class Fulltext... Hierarchy... Expanded...C01)

|  | C01B 4/02 - C01B 4/14 |
( covered by Fulltext... Hierarchy... Expanded...B01D 59/00 )

|  | C01B 5/00 |
Water

|  | C01B 5/02 |
· | Heavy water; Preparation by chemical reaction of hydrogen isotopes or their compounds, e.g. 4ND3+7O24NO2+6D2O, 2D2+O22D2O

|  | C01B 6/00 |
Hydrides of metals; Monoborane or diborane; Addition complexes thereof (higher hydrides of boron, substituted hydrides of boron Fulltext... Hierarchy... Expanded...C01B 35/00)

|  | C01B 6/02 |
· | Hydrides of transition elements; Addition complexes thereof

|  | C01B 6/04 |
· | Hydrides of alkali metals, alkaline earth metals, beryllium or magnesium; Addition complexes thereof

|  | C01B 6/06 |
· | Hydrides of aluminium, gallium, indium, thallium, germanium, tin, lead, arsenic, antimony, bismuth or polonium; Monoborane; Diborane; Addition complexes thereof

|  | C01B 6/08 |
( transferred to Fulltext... Hierarchy... Expanded...C01B 35/00 )

|  | C01B 6/10 |
· · | Monoborane; Diborane; Addition complexes thereof

|  | C01B 6/11 |
· · · | Preparation from boron or inorganic compounds containing boron and oxygen [2]

|  | C01B 6/12 |
( transferred to Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B 6/11-C01B 6/23 )

|  | C01B 6/13 |
· · · | Addition complexes of monoborane or diborane, e.g. with phosphine, arsine or hydrazine [2]

|  | C01B 6/15 |
· · · · | Metal boranates; Addition complexes thereof [2]

|  | C01B 6/17 |
· · · · · | Preparation from boron or inorganic compounds containing boron and oxygen [2]

|  | C01B 6/19 |
· · · · · | Preparation from other compounds of boron [2]

|  | C01B 6/21 |
· · · · · · | Preparation of boranates of alkali metals, alkaline earth metals, magnesium or beryllium; Addition complexes thereof, e.g. LiBH4.2N2H4, NaB2H7 [2]

|  | C01B 6/22 |
( transferred to Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B 6/11-C01B 6/23 )

|  | C01B 6/23 |
· · · · · · | Preparation of boranates of other metals, e.g. aluminium borohydride; Addition complexes thereof, e.g. Li[Al(BH4)3H] [2]

|  | C01B 6/24 |
· | Hydrides containing at least two metals, e.g. Li(AlH4); Addition complexes thereof (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B 6/13-C01B 6/23 take precedence)

|  | C01B 6/26 |
· · | Preparation from the metal with the highest valency or from its oxides or salts of its oxyacids

|  | C01B 6/28 - C01B 6/32 |
( transferred to Fulltext... Hierarchy... Expanded...C01B 6/24, Fulltext... Hierarchy... Expanded...C01B 6/26 )

|  | C01B 6/34 |
· | Purification; Stabilisation

|  | C01B 7/00 - C01B 11/00 |
Halogens; Compounds thereof

|  | C01B 7/00 |
Halogens; Halogen acids (oxyacids Fulltext... Hierarchy... Expanded...C01B 11/00)

|  | C01B 7/01 |
· | Chlorine; Hydrogen chloride [2]

|  | C01B 7/02 |
· · | Chlorine

|  | C01B 7/03 |
· · · | Preparation from chlorides [2]

|  | C01B 7/04 |
· · · · | Preparation from hydrogen chloride

|  | C01B 7/05 |
· · · · | Preparation from ammonium chloride [2]

|  | C01B 7/06 |
( transferred to Fulltext... Hierarchy... Expanded...C25B 1/24 )

|  | C01B 7/07 |
· · · | Purification [2]

|  | C01B 7/075 |
· · · · | of liquid chlorine [2]

|  | C01B 7/08 |
· · | Hydrogen chloride

|  | C01B 7/09 |
· | Bromine; Hydrogen bromide [2]

|  | C01B 7/10 |
· · | Bromine

|  | C01B 7/12 |
· · | Hydrogen bromide

|  | C01B 7/13 |
· | Iodine; Hydrogen iodide [2]

|  | C01B 7/14 |
· · | Iodine

|  | C01B 7/16 |
· · · | Preparation from seaweed

|  | C01B 7/18 |
· · | Hydrogen iodine

|  | C01B 7/19 |
· | Fluorine; Hydrogen fluoride [2]

|  | C01B 7/20 |
· · | Fluorine

|  | C01B 7/22 |
· · | Hydrogen fluoride

|  | C01B 7/24 |
· | Inter-halogen compounds

|  | C01B 9/00 |
General methods of preparing halides (particular individual halides, see the relevant groups in sub-classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B-C01G according to the element combined with the halogen; electrolytic production of inorganic compounds Fulltext... Hierarchy... Expanded...C25B)

|  | C01B 9/02 |
· | chlorides

|  | C01B 9/04 |
· | bromides

|  | C01B 9/06 |
· | iodides

|  | C01B 9/08 |
· | fluorides

|  | C01B 11/00 |
Oxides or oxyacids of halogens; Salts thereof

|  | C01B 11/02 |
· | Oxides of chlorine

|  | C01B 11/04 |
· | Hypochlorous acid

|  | C01B 11/06 |
· · | Hypochlorites, e.g. chlorinated lime

|  | C01B 11/08 |
· | Chlorous acid

|  | C01B 11/10 |
· · | Chlorites

|  | C01B 11/12 |
· | Chloric acid

|  | C01B 11/14 |
· · | Chlorates

|  | C01B 11/16 |
· | Perchloric acid

|  | C01B 11/18 |
· · | Perchlorates

|  | C01B 11/20 |
· | Oxygen compounds of bromine

|  | C01B 11/22 |
· | Oxygen compounds of iodine

|  | C01B 11/24 |
· | Oxygen compounds of fluorine

|  | C01B 11/26 |
( transferred to Fulltext... Hierarchy... Expanded...C25B 1/24, Fulltext... Hierarchy... Expanded...C25B 1/26 )

|  | C01B 13/00 - C01B 15/00 |
Oxygen; Oxides in general; Per-compounds

|  | C01B 13/00 |
Oxygen; Ozone

|  | C01B 13/02 |
· | Preparation of oxygen (by liquefying Fulltext... Hierarchy... Expanded...F25J)

|  | C01B 13/04 |
( transferred to Fulltext... Hierarchy... Expanded...C25B 1/04 )

|  | C01B 13/06 |
( transferred to Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C25B 1/04-C25B 1/12 )

|  | C01B 13/08 |
· · | from air with the aid of metal oxides, e.g. barium oxide, manganese oxide

|  | C01B 13/10 |
· | Preparation of ozone

|  | C01B 13/11 |
· · | by electric discharge [2]

|  | C01B 13/12 |
( covered by Fulltext... Hierarchy... Expanded...C01B 13/10, Fulltext... Hierarchy... Expanded...C01B 13/11 )

|  | C01B 13/14 |
· | Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups in Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B-C01G or Fulltext... Hierarchy... Expanded...C25B, according to the element combined with the oxygen or hydroxyl)

|  | C01B 15/00 |
Peroxides; Peracides; Salts thereof (peroxyacids of halogens, salts thereof Fulltext... Hierarchy... Expanded...C01B 11/00)

|  | C01B 15/02 |
· | Hydrogen peroxide

|  | C01B 15/022 |
· · | Preparation by oxidation-reduction of organic compounds [2]

|  | C01B 15/025 |
· · · | by the alkyl-anthraquinone process [2]

|  | C01B 15/028 |
· · · | Preparation from metal peroxides [2]

|  | C01B 15/04 |
· | Metal peroxides

|  | C01B 15/043 |
· · | Alkali or alkaline earth metals peroxides; Magnesium peroxide [2]

|  | C01B 15/047 |
· · | Heavy metal peroxides [2]

|  | C01B 15/05 |
· | Perhydrates [2]

|  | C01B 15/06 |
· | Persulphuric acids (H2SO5, H2S2O8)

|  | C01B 15/08 |
· | Persulphates

|  | C01B 15/10 |
· | Percarbonates

|  | C01B 15/12 |
· | Perborates

|  | C01B 15/14 |
· | Persilicates

|  | C01B 15/16 |
· | Perphosphates

|  | C01B 17/00 |
Sulphur; Compounds thereof

|  | C01B 17/02 |
· | Preparation of sulphur; Purification

|  | C01B 17/04 |
· · | from gaseous sulphur compounds

|  | C01B 17/06 |
· · | from sulphides or material containing sulphides, e.g. ores

|  | C01B 17/08 |
· · | Recovery of sulphur from elemental sulphur-containing material, e.g. luxmasses

|  | C01B 17/10 |
· · | Finely-divided sulphur

|  | C01B 17/12 |
· · | Insoluble sulphur (-sulphur)

|  | C01B 17/14 |
· · | Purification

|  | C01B 17/16 |
· | Hydrogen sulphides

|  | C01B 17/18 |
· · | Hydrogen polysulphides

|  | C01B 17/20 |
· | Methods for preparing sulphides or polysulphides, in general (ammonium sulphides or polysulphides Fulltext... Hierarchy... Expanded...C01C; sulphides or polysulphides of metals, other than alkali metals, magnesium, calcium, strontium, and barium, see the relevant groups of in Fulltext... Hierarchy... Expanded...C01F or Fulltext... Hierarchy... Expanded...C01G according to the metal)

|  | C01B 17/22 |
· | Alkali metal sulphides or polysulphides

|  | C01B 17/24 |
· · | Preparation by reduction

|  | C01B 17/26 |
· · · | with carbon

|  | C01B 17/28 |
· · · | with reducing gases

|  | C01B 17/30 |
· · | Preparation from sodium or potassium amalgam with sulphur or sulphides

|  | C01B 17/32 |
· · | Hydrosulphides of sodium or potassium

|  | C01B 17/34 |
· · | Polysulphides of sodium or potassium

|  | C01B 17/36 |
· · | Purification

|  | C01B 17/38 |
· · | Dehydration

|  | C01B 17/40 |
· · | Making shaped products, e.g. granules

|  | C01B 17/42 |
· | Sulphides or polysulphides of magnesium, calcium, strontium, or barium

|  | C01B 17/43 |
· · | from oxides or hydroxides with sulphur or hydrogen sulphide

|  | C01B 17/44 |
· · | by reduction of sulphates

|  | C01B 17/45 |
· | Compounds containing sulphur and halogen, with or without oxygen

|  | C01B 17/46 |
· | Compounds containing sulphur, halogen, hydrogen, and oxygen

|  | C01B 17/48 |
· | Sulphur dioxide; Sulphurous acid

|  | C01B 17/50 |
· · | Preparation of sulphur dioxide

|  | C01B 17/52 |
· · · | by roasting sulphides (Fulltext... Hierarchy... Expanded...C22B 1/00 takes precedence)

|  | C01B 17/54 |
· · · | by burning elemental sulphur

|  | C01B 17/56 |
· · · | Separation; Purification

|  | C01B 17/58 |
· · · | Recovery of sulphur dioxide from acid tar and the like

|  | C01B 17/60 |
· · · | Isolation of sulphur dioxide from gases

|  | C01B 17/62 |
· | Methods of preparing sulphites in general (particular individual sulphites, see the relevant groups in Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B-C01G according to the cation)

|  | C01B 17/64 |
· | Thiosulphates; Dithionites; Polythionates

|  | C01B 17/66 |
· · | Dithionites

|  | C01B 17/68 |
· | Sulphur trioxide (Fulltext... Hierarchy... Expanded...C01B 17/76 takes precedence)

|  | C01B 17/70 |
· · | Stabilisation of gamma-form sulphur trioxide

|  | C01B 17/72 |
· | Sulphuric acid

|  | C01B 17/74 |
· · | Preparation

|  | C01B 17/76 |
· · · | by contact process

|  | C01B 17/78 |
· · · · | Use of special catalysts

|  | C01B 17/80 |
· · · · | Apparatus

|  | C01B 17/82 |
· · · | Nitrogen oxide processes

|  | C01B 17/84 |
· · · · | Chamber process

|  | C01B 17/86 |
· · · · | Tower processes

|  | C01B 17/88 |
· · | Concentration of sulphuric acid

|  | C01B 17/90 |
· · | Separation; Purification

|  | C01B 17/92 |
· · · | Recovery from acid tar and the like

|  | C01B 17/94 |
· · · | Recovery from nitration acids

|  | C01B 17/96 |
· | Methods for the preparation of sulphates in general (particular individual sulphates, see the relevant groups in Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B-C01G according to the cation)

|  | C01B 17/98 |
· | Other compounds containing sulphur and oxygen (persulphuric acids Fulltext... Hierarchy... Expanded...C01B 15/06; persulphates Fulltext... Hierarchy... Expanded...C01B 15/08)

|  | C01B 19/00 |
Selenium; Tellurium; Compounds thereof (phosphorus compounds Fulltext... Hierarchy... Expanded...C01B 25/14)

|  | C01B 21/00 |
Nitrogen; Compounds thereof

|  | C01B 21/02 |
· | Preparation of nitrogen (from ammonia Fulltext... Hierarchy... Expanded...C01B 1/04)

|  | C01B 21/04 |
· | Purification or separation of nitrogen (by liquefying Fulltext... Hierarchy... Expanded...F25J)

|  | C01B 21/06 |
· | Nitrides (alloys Fulltext... Hierarchy... Expanded...C22)

|  | C01B 21/08 |
· | Hydrazoic acid; Azides

|  | C01B 21/10 |
· | Imido and amido compounds (takes precedence over other groups of Fulltext... Hierarchy... Expanded...C01B; cyanamide Fulltext... Hierarchy... Expanded...C01C 3/16)

|  | C01B 21/12 |
· · | Carbamic acid; Inorganic salts thereof (organic salts Fulltext... Hierarchy... Expanded...C07C 125/02)

|  | C01B 21/14 |
· · | Hydroxylamine; Salts thereof

|  | C01B 21/16 |
· · | Hydrazine; Salts thereof

|  | C01B 21/18 |
· · | containing halogen, e.g. chloramine

|  | C01B 21/20 |
· | Nitrogen oxides; Oxyacids of nitrogen; Salts thereof

|  | C01B 21/22 |
· · | Nitrous oxide (N2O)

|  | C01B 21/24 |
· · | Nitric oxide (NO)

|  | C01B 21/26 |
· · · | Preparation by catalytic oxidation of ammonia

|  | C01B 21/28 |
· · · · | Apparatus

|  | C01B 21/30 |
· · · | Preparation by oxidation of nitrogen

|  | C01B 21/32 |
· · · · | Apparatus

|  | C01B 21/34 |
· · | Nitrogen trioxide (N2O3)

|  | C01B 21/36 |
· · | Nitrogen dioxide (NO2, N2O4) (Fulltext... Hierarchy... Expanded...C01B 21/26, Fulltext... Hierarchy... Expanded...C01B 21/30 take precedence)

|  | C01B 21/38 |
· · | Nitric acid

|  | C01B 21/40 |
· · · | Preparation by absorption of oxides of nitrogen

|  | C01B 21/42 |
· · · | Preparation from nitrates

|  | C01B 21/44 |
· · · | Concentration

|  | C01B 21/46 |
· · · | Purification; Separation

|  | C01B 21/48 |
· · | Methods for the preparation of nitrates in general (particular individual nitrates, see the relevant groups in Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B-C01G according to the cation)

|  | C01B 21/50 |
· · | Nitrous acid; Salts thereof

|  | C01B 21/52 |
· | Halogen compounds of nitrogen (Fulltext... Hierarchy... Expanded...C01B 21/18 takes precedence)

|  | C01B 21/54 |
· | Sulphur compounds of nitrogen

|  | C01B 23/00 |
Noble gases; Compounds thereof; Radon (liquefying Fulltext... Hierarchy... Expanded...F25J)

|  | C01B 25/00 |
Phosphorus; Compounds thereof (nitrides Fulltext... Hierarchy... Expanded...C01B 21/06; imido or amido compounds Fulltext... Hierarchy... Expanded...C01B 21/10)

|  | C01B 25/01 |
· | Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds [2]

|  | C01B 25/02 |
· | Preparation of phosphorus

|  | C01B 25/023 |
· · | of red phosphorus [2]

|  | C01B 25/027 |
· · | of yellow phosphorus [2]

|  | C01B 25/04 |
· | Purification of phosphorus

|  | C01B 25/043 |
· · | of red phosphorus [2]

|  | C01B 25/047 |
· · | of yellow phosphorus [2]

|  | C01B 25/06 |
· | Hydrogen phosphides

|  | C01B 25/08 |
· | Other phosphides

|  | C01B 25/10 |
· | Halides or oxyhalides of phosphorus

|  | C01B 25/12 |
· | Oxides of phosphorus

|  | C01B 25/14 |
· | Sulphur, selenium, or tellurium compounds of phosphorus

|  | C01B 25/16 |
· | Oxyacids of phosphorus; Salts thereof

|  | C01B 25/163 |
· · | Phosphorous acid; Salts thereof [2]

|  | C01B 25/165 |
· · | Hypophosphorous acid; Salts thereof [2]

|  | C01B 25/168 |
· · | Pyrophosphorous acid; Salts thereof [2]

|  | C01B 25/18 |
· · | Phosphoric acid

|  | C01B 25/20 |
· · · | Preparation from elemental phosphorus

|  | C01B 25/22 |
· · · | Preparation by the wet process

|  | C01B 25/24 |
· · | Condensed phosphoric acids

|  | C01B 25/26 |
· · | Phosphates (perphosphates Fulltext... Hierarchy... Expanded...C01B 15/16)

|  | C01B 25/28 |
· · · | Ammonium phosphates

|  | C01B 25/30 |
· · · | Alkali metal phosphates

|  | C01B 25/32 |
· · · | Phosphates of magnesium, calcium, strontium, or barium

|  | C01B 25/34 |
· · · · | Magnesium phosphates

|  | C01B 25/36 |
· · · | Aluminium phosphates

|  | C01B 25/37 |
· · · | Phosphates of heavy metals [2]

|  | C01B 25/38 |
· · · | Condensed phosphates

|  | C01B 25/40 |
· · · · | Polyphosphates [2]

|  | C01B 25/42 |
· · · · | Pyrophosphates [2]

|  | C01B 25/44 |
· · · · | Metaphosphates [2]

|  | C01B 25/46 |
· · | Preparation involving solvent-solvent extraction (extraction per se Fulltext... Hierarchy... Expanded...B01D 11/00) [2]

|  | C01B 27/00 - C01B 29/00 |
Compounds of arsenic or antimony (the elements themselves Fulltext... Hierarchy... Expanded...C22B)

|  | C01B 27/00 |
Arsenic compounds

|  | C01B 27/02 |
· | Arsenates; Arsenites

|  | C01B 29/00 |
Antimony compounds

|  | C01B 29/02 |
· | Antimonates; Antimonites

|  | C01B 31/00 |
Carbon; Compounds thereof (carbon black Fulltext... Hierarchy... Expanded...C09C 1/48; gas carbon Fulltext... Hierarchy... Expanded...C10B)

|  | C01B 31/02 |
· | Preparation of carbon (by using ultra-high pressure, e.g. for the formation of diamonds, Fulltext... Hierarchy... Expanded...B01J 3/06); Purification

|  | C01B 31/04 |
· · | Graphite

|  | C01B 31/06 |
· · | Diamond

|  | C01B 31/07 |
( transferred to Fulltext... Hierarchy... Expanded...D01F 9/12 )

|  | C01B 31/08 |
· | Active carbon

|  | C01B 31/10 |
· · | Preparation by using gaseous activating agents

|  | C01B 31/12 |
· · | Preparation by using non-gaseous activating agents

|  | C01B 31/14 |
· · | Granulation (apparatus Fulltext... Hierarchy... Expanded...B01J 2/00)

|  | C01B 31/16 |
· | Preparation of ion-exchanging materials from carbonaceous material

|  | C01B 31/18 |
· | Carbon monoxide (metal carbonyls Fulltext... Hierarchy... Expanded...C01G)

|  | C01B 31/20 |
· | Carbon dioxide

|  | C01B 31/22 |
· · | Solidifying

|  | C01B 31/24 |
· | Methods for the preparation of carbonates or bicarbonates in general (percarbonates Fulltext... Hierarchy... Expanded...C01B 15/10; particular individual carbonates, see the relevant groups of sub-classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...C01B-C01G according to the cation)

|  | C01B 31/26 |
· | Compounds containing carbon and sulphur, e.g. carbon disulphide, carbon oxysulphide; Thiophosgene

|  | C01B 31/28 |
· | Phosgene

|  | C01B 31/30 |
· | Carbides (alloys Fulltext... Hierarchy... Expanded...C22)

|  | C01B 31/32 |
· · | Calcium carbide

|  | C01B 31/34 |
· · | Tungsten or molybdenum carbides

|  | C01B 31/36 |
· · | Carbides of silicon or boron

|  | C01B 33/00 |
Silicon; Compounds thereof (nitrides Fulltext... Hierarchy... Expanded...C01B 21/06; carbides Fulltext... Hierarchy... Expanded...C01B 31/36)

|  | C01B 33/02 |
· | Silicon (forming a single crystal layer from the vapour phase Fulltext... Hierarchy... Expanded...B01J 17/28)

|  | C01B 33/04 |
· | Hydrides of silicon

|  | C01B 33/06 |
· | Metal silicides (alloys Fulltext... Hierarchy... Expanded...C22)

|  | C01B 33/08 |
· | Halides of silicon

|  | C01B 33/10 |
· · | Compounds containing silicon, fluorine, and other elements

|  | C01B 33/12 |
· | Silica; Hydrates thereof

|  | C01B 33/14 |
· · | Colloidal silica (sols and hydrogels)

|  | C01B 33/16 |
· · | Silica gel

|  | C01B 33/18 |
· · | Finely-divided silica

|  | C01B 33/20 |
· | Silicates (persilicates Fulltext... Hierarchy... Expanded...C01B 15/14)

|  | C01B 33/22 |
· · | Magnesium silicates

|  | C01B 33/24 |
· · | Alkaline-earth metal silicates

|  | C01B 33/26 |
· · | Aluminium-containing silicates

|  | C01B 33/28 |
· · · | Base exchange silicates, e.g. zeolites (regeneration Fulltext... Hierarchy... Expanded...B01J 1/09)

|  | C01B 33/30 |
· · · | Bleaching earth

|  | C01B 33/32 |
· · | Alkali metal silicates

|  | C01B 35/00 |
Boron; Compounds thereof (monoborane, diborane, metal boranates or addition complexes thereof Fulltext... Hierarchy... Expanded...C01B 6/00; perborates Fulltext... Hierarchy... Expanded...C01B 15/12; nitrides Fulltext... Hierarchy... Expanded...C01B 21/06; imido or amido compounds Fulltext... Hierarchy... Expanded...C01B 21/10; phosphides Fulltext... Hierarchy... Expanded...C01B 25/08; carbides Fulltext... Hierarchy... Expanded...C01B 31/36; alloys containing boron Fulltext... Hierarchy... Expanded...C22)

|  | C01B 35/02 |
· | Boron; Borides [2]

|  | C01B 35/04 |
· · | Metal borides [2]

|  | C01B 35/06 |
· | Boron halogen compounds [2]

|  | C01B 35/08 |
· | Compounds containing boron and nitrogen, phosphorus, oxygen, sulphur, selenium or tellurium [2]

|  | C01B 35/10 |
· · | Compounds containing boron and oxygen (Fulltext... Hierarchy... Expanded...C01B 35/06 takes precedence) [2]

|  | C01B 35/12 |
· · · | Borates [2]

|  | C01B 35/14 |
· · | Compounds containing boron and nitrogen, phosphorus, sulphur, selenium or tellurium [2]

|  | C01B 35/16 |
· | Compounds containing direct bonding between two boron atoms, e.g. Cl2B—BCl2 [2]

|  | C01B 35/18 |
· | Compounds containing three or more boron atoms, e.g. Na B3H8, MgB10Br10 (borazoles Fulltext... Hierarchy... Expanded...C01B 35/14) [2]