Patent ID: 6184175
Filing Date: 2001-02-06
Classification: B01J,C07D

Abstract:
A process for preparing a supported silver catalyst for the vapor-phase oxidation of ethylene to ethylene oxide, comprising the steps of:(a) impregnating a porous support having a surface area of about 0.2 to 2.0 m.sup.2 /g with a hydrocarbon solution of an organic silver salt of an acid sufficient to provide 3 to 25 wt % silver on the support; and(b) subjecting the silver impregnated support of step (a) to activation by heating in a series of stages of increasing heat in an atmosphere containing inert gas and less oxygen than air; and(c) controlling the amount of oxygen present in said atmosphere during said heating to eliminate uncontrolled combustion of the organic portion of the silver salt of an organic acid and the hydrocarbon.