Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1987-11-03
1989-05-09
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
549536, B01J 2104, B01J 2304, B01J 2336, B01J 2350
Patent
active
048290440
ABSTRACT:
The invention relates to a process for preparing a silver catalyst suitable for use in the oxidation of ethylene to ethylene oxide characterized in that an alkali metal enriched alumina carrier, which has been calcined, is impregnated with a solution of a silver compound, sufficient to cause precipitation on the carrier of from 1 to 25 percent by weight, on the total catalyst, of silver, and before, during or after that impregnation also with one or more dissolved potassium, rubidium or cesium compounds as promoter and with a rhenium compound, and after precipitation the silver compound on the impregnated carrier is reduced to metallic silver.
REFERENCES:
patent: 3449078 (1969-06-01), Quik et al.
patent: 4341664 (1982-07-01), Antos
patent: 4342667 (1982-08-01), Armstrong et al.
Boxhoorn Gosse
Klazinga Aan H.
Shell Oil Company
Shine W. J.
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