Patent ID: 7582805

Claim:
A process for the selective hydrogenation of alkynes and dienes in C2-C5 + -olefin mixtures, or which comprises conducting the hydrogenation in the presence of a catalyst particle comprising (a) palladium in an amount of from 0.005 to 1% by weight based on the total weight of the catalyst particle, (b) silver in an amount of from 0.005 to 1% by weight based on the total weight of the catalyst particle, and (c) optionally a compound of a metal of the first or second group of the Periodic Table, wherein components (a) and (b), and optionally (c), are applied to a silica support, with component (b) being applied before the support is molded, the silver is distributed homogeneously over the cross-section of the catalyst particle, and the palladium is present in an edge layer close to the surface of the catalyst particle.