| IPC 6 English version |
 B01J - B01J 20/34 |
| B01J02100-B01J02396 |
B01J 25/00 - B01J 29/90  |
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| SECTION B– PERFORMING OPERATIONS; TRANSPORTING |
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| B 01 | PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL (furnaces, kilns, ovens, retorts, in general F 27) |
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| B 01 J | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS (processes or apparatus for specific applications, see the relevant places for these processes or apparatus, e.g. F 26 B 3/08) |
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21/ | 00 | Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium [2] |
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21/ | 02 | . | Boron or aluminium; Oxides or hydroxides thereof [2] |
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21/ | 04 | . | . | Alumina [2] |
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21/ | 06 | . | Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof [2] |
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21/ | 08 | . | . | Silica [2] |
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21/ | 10 | . | Magnesium; Oxides or hydroxides thereof [2] |
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21/ | 12 | . | Silica and alumina [2] |
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21/ | 14 | . | Silica and magnesia [2] |
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21/ | 16 | . | Clays or other mineral silicates [2] |
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21/ | 18 | . | Carbon [2] |
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21/ | 20 | . | Regeneration or reactivation [2] |
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23/ | 00 | Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B 01 J 21/00 (B 01 J 21/16 takes precedence) |
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23/ | 02 | . | of the alkali- or alkaline earth metals or beryllium [2] |
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23/ | 04 | . | . | Alkali metals [2] |
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23/ | 06 | . | of zinc, cadmium or mercury [2] |
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23/ | 08 | . | of gallium, indium or thallium [2] |
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23/ | 10 | . | of rare earths [2] |
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23/ | 12 | . | of actinides [2] |
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23/ | 14 | . | of germanium, tin or lead [2] |
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23/ | 16 | . | of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium [2] |
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23/ | 18 | . | . | Arsenic, antimony or bismuth [2] |
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23/ | 20 | . | . | Vanadium, niobium or tantalum [2] |
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23/ | 22 | . | . | . | Vanadium [2] |
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23/ | 24 | . | . | Chromium, molybdenum or tungsten [2] |
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23/ | 26 | . | . | . | Chromium [2] |
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23/ | 28 | . | . | . | Molybdenum [2] |
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23/ | 30 | . | . | . | Tungsten [2] |
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23/ | 31 | . | . | . | combined with bismuth [3] |
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23/ | 32 | . | . | Manganese, technetium or rhenium [2] |
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23/ | 34 | . | . | . | Manganese [2] |
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23/ | 36 | . | . | . | Rhenium [2] |
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23/ | 38 | . | of noble metals [2] |
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23/ | 40 | . | . | of the platinum group metals [2] |
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23/ | 42 | . | . | . | Platinum [2] |
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23/ | 44 | . | . | . | Palladium [2] |
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23/ | 46 | . | . | . | Ruthenium, rhodium, osmium or iridium [2] |
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23/ | 48 | . | . | Silver or gold [2] |
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23/ | 50 | . | . | . | Silver [2] |
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23/ | 52 | . | . | . | Gold [2] |
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23/ | 54 | . | . | combined with metals, oxides or hydroxides provided for in groups B 01 J 23/02 to B 01 J 23/36 [2] |
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23/ | 56 | . | . | . | Platinum group metals [2] |
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23/ | 58 | . | . | . | . | with alkali- or alkaline earth metals or beryllium [2,6] |
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23/ | 60 | . | . | . | . | with zinc, cadmium or mercury [2] |
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23/ | 62 | . | . | . | . | with gallium, indium, thallium, germanium, tin or lead [2] |
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23/ | 63 | . | . | . | . | with rare earths or actinides [6] |
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23/ | 64 | . | . | . | . | with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium [2] |
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23/ | 644 | . | . | . | . | . | Arsenic, antimony or bismuth [6] |
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23/ | 648 | . | . | . | . | . | Vanadium, niobium or tantalum [6] |
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23/ | 652 | . | . | . | . | . | Chromium, molybdenum or tungsten [6] |
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23/ | 656 | . | . | . | . | . | Manganese, technetium or rhenium [6] |
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23/ | 66 | . | . | . | Silver or gold [2] |
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23/ | 68 | . | . | . | . | with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium [2] |
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23/ | 70 | . | of the iron group metals or copper [2] |
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23/ | 72 | . | . | Copper [2] |
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23/ | 74 | . | . | Iron group metals [2] |
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23/ | 745 | . | . | . | Iron [6] |
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23/ | 75 | . | . | . | Cobalt [6] |
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23/ | 755 | . | . | . | Nickel [6] |
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23/ | 76 | . | . | combined with metals, oxides or hydroxides provided for in groups B 01 J 23/02 to B 01 J 23/36 [2] |
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23/ | 78 | . | . | . | with alkali- or alkaline earth metals or beryllium [2,6] |
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23/ | 80 | . | . | . | with zinc, cadmium or mercury [2] |
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23/ | 82 | (transferred to B 01 J 23/825, B 01 J 23/835) |
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23/ | 825 | . | . | . | with gallium, indium or thallium [6] |
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23/ | 83 | . | . | . | with rare earths or actinides [6] |
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23/ | 835 | . | . | . | with germanium, tin or lead [6] |
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23/ | 84 | . | . | . | with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium [2] |
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23/ | 843 | . | . | . | . | Arsenic, antimony or bismuth [6] |
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23/ | 847 | . | . | . | . | Vanadium, niobium or tantalum [6] |
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23/ | 85 | . | . | . | . | Chromium, molybdenum, or tungsten [3] |
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23/ | 86 | . | . | . | . | . | Chromium [2,3] |
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23/ | 88 | . | . | . | . | . | Molybdenum [2,3] |
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23/ | 881 | . | . | . | . | . | . | and iron [6] |
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23/ | 882 | . | . | . | . | . | . | and cobalt [6] |
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23/ | 883 | . | . | . | . | . | . | and nickel [6] |
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23/ | 885 | . | . | . | . | . | . | and copper [6] |
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23/ | 887 | . | . | . | . | . | . | containing in addition other metals, oxides or hydroxides provided for in groups B 01 J 23/02 to B 01 J 23/36 [6] |
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23/ | 888 | . | . | . | . | . | Tungsten [6] |
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23/ | 889 | . | . | . | . | Manganese, technetium or rhenium [6] |
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23/ | 89 | . | . | combined with noble metals [3] |
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23/ | 90 | . | Regeneration or reactivation [2] |
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23/ | 92 | . | . | of catalysts comprising metals, oxides or hydroxides provided for in groups B 01 J 23/02 to B 01 J 23/36 [2] |
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23/ | 94 | . | . | of catalysts comprising metals, oxides or hydroxides of the iron group metals or copper [2] |
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23/ | 96 | . | . | of catalysts comprising metals, oxides or hydroxides of the noble metals [2] |
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| B01J - B01J 20/34 |  | B01J 25/00 - B01J 29/90 |
