FIELD: chemistry.
SUBSTANCE: invention relates to a method of preparing gold catalysts on a porous metal oxide support and aurichlorohydric acid as a precursor, a catalyst and its use for oxidising alcohols, aldehydes, polyhydroxy compounds and carbohydrates. Described is a method of making a supported gold catalyst, involving the following steps: a) preparation of the support in dry form, b) bringing the support into contact with a solution of precursor-aurichlorohydric acid, wherein the maximum volume of the solution is as great as the pore volume of the support, so that an impregnated catalyst precursor is obtained, and c) drying the impregnated catalyst precursor, where in aqueous solution of the precursor aurichlorohydric acid is a HAuCl4 solution and aqueous hydrochloric acid with acid concentration ranging from 0.1 mol/l to 12 mol/l. Described is a catalyst prepared using said method, its use to oxidise organic compounds, including for producing aldonic acids.
EFFECT: increased activity and selectivity of the catalyst.
16 cl, 1 tbl, 3 ex
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Authors
Dates
2010-01-10—Published
2006-08-01—Filed