Catalyst for preparation of ethylene oxide

Details Catalyst for preparation of ethylene oxide Catalyst for preparation of ethylene oxide

B - Operations, Transporting

01

J

252/85

B01J 23/48 (2006.01) B01J 23/50 (2006.01) B01J 37/02 (2006.01) C07D 301/10 (2006.01)

Patent

CA 1062691

A B S T R A C T The present invention relates to a process for the preparation of supported silver catalysts to be used in the conversion of ethylene into ethylene oxide, by coating the surface of an inert support with an overlayer of polyacrylonitrile complexed with a silver salt, the coated support being heated at a temperature up to 600°C to pyrolyse the polyacrylonitrile and to convert the silver ions of the complexed silver salt into discrete particles of silver. Especially good results have been obtained when the overlayer of polyacrylonitrile complexed with silver nitrate is prepared in situ by polymerization of silver nitrate complexed acrylonitrile monomer.

207077

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