| 简介 |
There is provided a catalyst for producing ethylene oxide from ethylene which is composed of at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, and can be improved, in particular, in selectivity.
The present invention relates to a catalyst for producing ethylene oxide from ethylene, comprising at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, which catalyst is produced by optionally pretreating the carrier to support an alkali metal thereon and then supporting Ag, Cs and Re on the carrier, in which the carrier has a specific surface area of 0.6 to 3.0 m2/g and contains acid sites having a pKa value of not more than 5.0; a content of Re in the catalyst is 170 to 600 ppm per 1 m2/g of the specific surface area of the carrier on the basis of a weight of the carrier; and a molar ratio of Cs to Re in the catalyst is 0.3 to 19. |
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