Catalyst for epoxidation of an alkene to an alkene oxide,...

Details Catalyst for epoxidation of an alkene to an alkene oxide,... Catalyst for epoxidation of an alkene to an alkene oxide,...

2005-12-22

2010-02-02

Mayes, Melvin C (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S231000, C502S340000, C502S347000, C502S344000, C502S341000, C549S535000, C549S536000, C549S534000

Reexamination Certificate

active

07655596

ABSTRACT:
The present invention if for a catalyst for epoxidation of an alkene, such as ethylene, to an alkene oxide, such as ethylene oxide, on which silver has been deposited on alumina as a support which has been modified with certain weak base compounds, such as oxides of a Group 1A, Group 2A, Group 3A or the first transition series of the Periodic Table of Elements, and with a high temperature heat treatment. Optional promoters selected from the group consisting of compounds of Group 1A, Group 2A, Group 7A and Group 8 may be contacted with the alpha-alumina support in solution with a silver compound, with the catalyst precursor before calcination or with the catalyst after calcination. The catalyst is brought into contact with alkene and oxygen under reaction conditions to selectively convert the alkene to an alkene oxide.

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“Solid State Chemistry and Its Appications”; Anthony R. West; p. 292-296; John Wiley & Sons (1984).

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