Ethylene oxide production

Details Ethylene oxide production Ethylene oxide production

1978-08-04

1980-06-03

Milestone, Norma S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252463, 252476, C07D30110

Patent

active

042061288

ABSTRACT:
An improved method is disclosed for the vapor phase epoxidation of ethylene to ethylene oxide which includes intimately contacting an ethylene-containing feed stream with an epoxidizing amount of molecular oxygen epoxidizing agent in the presence of a catalytically effective amount of a novel supported, activated silver catalyst and, preferably in the presence of an effective amount of at least one inhibitor which retards combustion of ethylene to carbon dioxide at a temperature of from about 200.degree. C. to about 300.degree. C.
The novel silver catalyst is best described in terms of its method of preparation. The catalyst is prepared by impregnating certain inorganic porous substrates with a specific silver carboxylate/amine complex impregnating solution. The impregnated support is then heated in order to evaporate volatiles, decompose the complex and activate the catalyst.

REFERENCES:
patent: 3547830 (1970-12-01), Shropshire
patent: 3702259 (1972-11-01), Nielsen
patent: 3956184 (1976-05-01), Kruglikov et al.
Martell & Calvin, Chemistry of the Metal Chelate Compounds, (1952) pp. 518-523.
John C. Bailar, Jr., The Chemistry of Coordination Compounds, (1956) pp. 181-183, 234.

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