Preservation, e.g. preventing evaporation or oxidation, of non-metallic liquids by applying a floating layer, e.g. of micro-balloons
B01J 1/20
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Apparatus characterised by being constructed of material selected for its chemically-resistant properties (refractory details of furnaces Fulltext... Hierarchy... Expanded...F27D)
Chemical and/or physical processes, conducted in the presence of solid particles which are not reactants; Apparatus for such processes (fluidised-bed furnaces Fulltext... Hierarchy... Expanded...F27B 15/00)
Metal catalysts; Their preparation (production of the metal per seFulltext... Hierarchy... Expanded...C21, Fulltext... Hierarchy... Expanded...C22); Catalytic compositions or systems, e.g. special combinations of carrier and catalysts; Treatment of substances to influence, e.g. to enhance their catalytic activity; Regeneration of catalysts; Carriers for catalysts; The use of substances as catalysts
A particular chemical process (e.g. manufacture of a polyamide or polyester, the curing of an epoxy resin or of an aminoplast; the polymerisation of substances containing carbon-to-carbon unsaturation, or hydrogenation of a specific substance or narrow class of substances) characterised by the use of a particular catalyst is classified primarily with the process, by in the case of the use of a particular material as a catalyst in general, i.e. in chemical reactions applicable to a number of different types of starting material (examples are hydrogenation or esterification in general, or the Fischer-Tropsch reaction), the primary classification must be in the present group.
B01J 11/02
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General methods for the regeneration of catalysts
B01J 11/04
· ·
with oxygen-containing gases
B01J 11/06
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Metal catalysts; Catalytic combinations of metals and oxides or silicates; Preparation
B01J 11/08
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Metals of the platinum or palladium group; Silver; Gold
Deposition on to pre-formed carriers from solutions
B01J 11/26
· · ·
Mixtures of metals with oxides which are not reducible to metal by hydrogen or carbon monoxide, e.g. produced by co-precipitation
B01J 11/28
· · ·
Metals in the form of suspensions or powders
B01J 11/30
· · ·
Regeneration
B01J 11/32
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Oxides; Silicates; Metal salts such as molybdates having an anion composed of metal and oxygen only; Catalytic systems based thereon (Fulltext... Hierarchy... Expanded...B01J 11/06 takes precedence)
Treatment, e.g. activation, of synthetic clays, alumina, silica, or of minerals, e.g. bauxite, kieselguhr, natural clay (Fulltext... Hierarchy... Expanded...B01J 11/64 takes precedence)
B01J 11/60
· · ·
of synthetic clays, alumina, and silica
B01J 11/62
· · ·
of natural clays
B01J 11/64
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Activation with halogens or halogen-containing compounds (activating platinum, group and/or palladium-group metals on non-metallic carriers Fulltext... Hierarchy... Expanded...B01J 11/16)
B01J 11/66
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Regeneration
B01J 11/68
· · ·
by using oxygen-containing gases
B01J 11/70
· · ·
of catalysts containing exclusively alumina, silica, or silicates
Mixtures or complexes of metallic compounds reducible to a lower valency with reducing agents, i.e. Ziegler-type catalysts
B01J 13/00
Colloid chemistry, e.g. the production of colloidal solid materials or their solutions, so far as not included elsewhere; Making micro-capsules or micro-balloons
Crystallisation with or without the addition of small controlled quantities of substances to the crystals (crystallisation in general Fulltext... Hierarchy... Expanded...B01D 9/00)