Silver catalyst and its preparation and use

Details Silver catalyst and its preparation and use Silver catalyst and its preparation and use

B - Operations, Transporting

01

J

252/85

B01J 23/50 (2006.01) B01J 23/66 (2006.01) C07D 301/10 (2006.01)

Patent

CA 1276620

Abstract of the Disclosure: A silver catalyst for the direct oxidation of ethylene with oxygen to give ethylene oxide is applied on a porous carrier and essentially con- sists of .alpha.-alumina and contains certain amounts of soluble calcium, aluminum, potassium and sodium salts. The carrier has a BET surface area of from 0.2 to 0.8 m2/g, a pore volume of not less than 0.5 ml/g, the pores being equally accessible to cold and warm water, and a bulk density of less than 650 kg/m3, and has a shape which, in the reactor, provides a geometric surface area of not less than 600 m2/m3, on which more than 13% by weight of silver are applied as the active component, more than 110 kg of silver being available per m3 of reactor.

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