Processes for the preparation and for the production of a catalyst supported palladium gold catalyst supported palladium and gold

摘要

"Process for the preparation and for the production of a supported palladium gold catalyst, and catalyst supported palladium gold".It is provided an improved process for the production of supported catalysts of palladium - and gold of high activity and high selectivity.The process involves calcining the support impregnated with a palladium salt and a salt of gold in an atmosphere not reduced and at a temperature ranging from 100u2039c the 600u2039c before the reduction of metals.The catalysts of the invention are useful for aproduu00e7u00e3o of vinyl acetate in the vapor phase by reaction of ethylene, acetic acid and oxygen.