To increase the selectivity of hydrogenation of a catalyst and the application for the hydrogenation, in particular for the production of cumene

摘要

P process for the selective hydrogenation of unsaturated hydrocarbon components of a charge of starting. A hydrogenation catalyst is initially pretreated by contact with the gaseous ammonia and then placed in contact with the initial charge in the presence of hydrogen. / p & & p & the method to improve the selectivity of hydrogenation of the catalyst, especially by reducing to a minimum the hydrogenation of aromatic cyclic compounds. / p