PROCESS FOR THE SELECTIVE HYDROGENATION OF AROMATIC ACETYLENE COMPOUNDS

摘要

A process for the selective hydrogenation of aromatic acetylene compounds present as impurities in vinyl-aromatic compounds without substantial loss of vinyl-aromatic compound comprises adding hydrogen and an inert gas to a liquid phase vinyl-aromatic compound containing aromatic acetylene compounds and contacting the aromatic acetylene compound with hydrogen in the presence of a selective hydrogenation catalyst, wherein the partial hydrogen pressure is from about 0.001 to about 0.05 bar.