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US 2010/0137637 A1Published application
Carbon-supported gold catalyst
OwnerAlireza Haji Begli, Christine Kröner +3inventors
InventorsAlireza Haji Begli, Christine Kröner, Nadine Decker, Ulf Prüsse, Klaus-Dieter Vorlop
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Abstract
The invention relates to processes for preparing supported gold catalysts on carbon supports, wherein the support is contacted with aqueous solution or suspension of a chloroauric acid precursor. The invention also relates to a carbon-supported gold catalyst and to the use thereof for oxidation of alcohols, aldehydes, polyhydroxy compounds and carbohydrates.
Claims17
A process for preparing a supported gold catalyst composed of porous carbon support and chloroauric acid precursor, comprising the steps of:
- a) providing the dry support,
- b) contacting the support with a solution or suspension of the precursor HAuCl4 in the form of the tetrachloro complex, the volume of the precursor solution being less than or equal to the pore volume of the support, to obtain an impregnated catalyst precursor, and
- c) drying the impregnated catalyst precursor,
- said precursor solution being a solution or suspension of HAuCl4 in aqueous acid and the pH of the finished precursor solution always being less than 1.
1 more element
(canceled)
Dependencies are inferred from the claim text.