Patent ID: 8716175
Filing Date: 2014-05-06
Classification: B01J,C07D,Y02P

Abstract:
1. A catalyst for producing ethylene oxide from ethylene, comprising at least silver (Ag), lithium (Li), cesium (Cs), rhenium (Re) and a carrier, said catalyst is produced by optionally pretreating the carrier to support an alkali metal thereon in which the carrier has a specific surface area of 0.6 to 3.0 m 2 /g and a weight ratio of a silicon (Si) content to a sodium (Na) content of 6 to 27 in terms of SiO 2 /Na 2 O; a content of Re in the catalyst is 170 to 600 ppm per 1 m 2 /g of the specific surface area of the carrier on the basis of a weight of the carrier; a molar ratio of Cs to Re (Cs/Re) in the catalyst is 2.2 to 4.5; a molar ratio of Li to Re (Li/Re) in the catalyst is 25 to 63 and the content of Li is 400 to 1000 ppm on the basis of a weight of the carrier.