Patent ID: 8329613

Claim:
A method for producing a supported gold catalyst for the oxidation of carbohydrates, from a porous metal oxide support and a chloroauric acid precursor, comprising the following steps: a) preparing the support in dried form, b) placing the support in contact with an aqueous solution of the chloroauric acid precursor, 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, wherein the predominant form of the chloroauric acid in the aqueous solution of the chloroauric acid precursor is a tetrachloro complex [AuCl 4 ] − , the aqueous solution of the chloroauric acid precursor is a solution in aqueous acid, and the acid concentration of the chloroauric acid precursor solution is at least 2 mol/l or the chloroauric acid precursor solution has a pH of about 1.0 or below.