Stribrny katalyzator a zpusob jeho vyroby

The new silver catalysts contain from 3 to 20 wt .-% of silver and 0.003 to 0.05 wt .-% of potassium, rubidium, cesium or a mixture thereof as promoter in each case based on the weight of the catalyst on a heat resistant porous support material, percentages by weight, wherein the silver and the amount of promoter have been applied with multiple impregnations of the support material. The new silver catalysts are advantageously used for the production of ethylene oxide.