Patent ID: 9714227
Date: 2017-07-25
CPC Classifications: B01J,C07D,Y02P

Claim:
1. A catalyst for the epoxidation of alkenes, comprising silver in an amount from 5 to 35% by weight, rhenium in an amount from 50 to 600 ppm, cesium in an amount from 20 to 850 ppm, lithium in an amount from 10 to 450 ppm, tungsten in an amount from 10 to 600 ppm, and sulfur in an amount from 5 to 300 ppm, and the above amounts are based on the weight of the total catalyst, on a support, wherein the tungsten has been deposited on the support as a tungsten compound with a sulfur to tungsten atomic ratio of 100 ppm or less.