Catalyst and process for manufacture of alkene oxide

Details Catalyst and process for manufacture of alkene oxide Catalyst and process for manufacture of alkene oxide

B - Operations, Transporting

01

J

260/372, 252/85

B01J 23/50 (2006.01) C07D 301/00 (2006.01)

Patent

CA 1293240

Abstract: A process for the epoxidation of alkene to form alkene oxide comprising contacting alkene and oxygen- containing gas under epoxidation conditions in the presence of at least one gaseous efficiency-enhancing member of a redox-half reaction pair, e.g., nitric oxide, carbon dioxide and a supported silver catalyst comprising a catalytically effective amount of silver and at least one efficiency-enhancing salt of a mem- ber of a redox-half reaction pair, e.g., potassium nitrate, with efficiency-enhancing salt present in the catalyst in an amount sufficient to provide an efficiency of at least about 84 percent under speci- fied test conditions but below the amount which under a second set of specified test conditions would re- duce the activity to less than four pounds of ethylene oxide per cubic foot of catalyst per hour, thereby reducing the activity-reducing effect of carbon dioxide in carrying out the process.

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