| abstract |
The invention relates to a method for preparing an Au-Pd bimetallic shell type catalyst, which comprises the steps of a. providing a solid shaped catalyst carrier, b. contacting the carrier with two solutions, wherein a solution contains 0.1 to 10 An amount of Au ions in an amount by weight, and another solution containing Pd ions in an amount of 0.1 to 10% by weight, with a restriction that the weight ratio of Pd:Au is in the range of 0.2:1 to 4:1, c. Hydrogen reduces the plated support to obtain an Au-Pd bimetallic pre-catalyst, d. the Au-Pd bimetallic precatalyst and potassium content in the range of 0.1 to 10% by weight The aqueous potassium acetate solution was contacted, and dried to obtain an Au-Pd bimetallic shell type catalyst. The invention further relates to a process for the manufacture of an acrylate ester using the Au-Pd bimetallic catalyst. |