A PROCESS FOR THE SEMIHYDROGENATION OF ACETYLENES TO OLEFINS

摘要

A process for the semihydrogenation of acetylenes to olefins by hydrogenation of acetylenes such as herein described using palladium on calcium carbonate as catalyst characterised in that the palladium on calcium carbonate catalyst is poisoned with lead acetate and one or more of metal salts other than lead metal salt such as herein described and in presence of a secondary poison such as herein described and in presence of a solvent such as herein described at temperature and pressure as herein described.