Silver catalyst for production of ethylene oxide and method for manufacture thereof.

摘要

A silver catalyst for the production of ethylene oxide having 5 to 25% by weight, based on the amount of a finished catalyst, of finely divided metallic silver and 0.001 to 0.05 gram equivalent weight of cesium per kg of the finished catalyst carried on an alpha -alumina carrier. The outer surface thereof and the surface of pores in the carrier are coated with amorphous silica. The catalyst is produced by supporting finely divided metallic silver and cesium and then subjecting the supported carrier to a high temperature heat treatment in an inert gas at a temperature of 400 DEG C to 950 DEG C.