Process for reactivating used silver ethylene oxide catalysts

Details Process for reactivating used silver ethylene oxide catalysts Process for reactivating used silver ethylene oxide catalysts

1977-10-18

1978-11-14

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252412, 252420, 26034834, B01J 2396, C07D30110, C07D30304

Patent

active

041254805

ABSTRACT:
The performance of used supported silver-based ethylene oxide catalysts is improved by a) washing the used catalyst with water or a mixture of water with a water-miscible organic solvent and b) depositing on the washed catalyst from about 0.00004 to about 0.008 gram equivalent weights per kilogram of total catalyst of ions of one or more of the alkali metals sodium, potassium, rubidium or cesium.

REFERENCES:
patent: 2194602 (1940-03-01), Law
patent: 3962136 (1976-06-01), Nielson et al.
patent: 4007135 (1977-02-01), Hayden et al.
patent: 4010115 (1977-03-01), Nielson et al.
patent: 4033903 (1977-07-01), Maxwell
patent: 4066575 (1978-01-01), Wihnick

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