US Patent 7902411 Catalyst composition for oxychlorination

The present invention relates to a catalyst composition for the oxychlorination of ethylene, comprising a mixture of metal salts on a support, where said metal salts are applied to the support in such ratios that the catalyst composition comprisesa) from 3 to 12% by weight of copper as copper salt,b) from 0 to 3% by weight of an alkaline earth metal as alkaline earth metal salt,c) from 0 to 3% by weight of an alkaline metal as alkaline metal salt,d) from 0.001 to 0.1% by weight, preferably from 0.005 to 0.05% by weight, of at least one metal selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum, and/or from 0.0001 to 0.1% by weight, preferably from 0.001 to 0.05% by weight, of gold, as corresponding metal salt or tetrachloroauric acid,where all percentages by weight are based on the total weight of the catalyst including support material.