Process for improving the activity of used supported silver cata

Details Process for improving the activity of used supported silver cata Process for improving the activity of used supported silver cata

1978-09-05

1980-01-29

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252412, 252420, 26034834, B01J 2396, B01J 2350, C07D30110, C07D30304

Patent

active

041861060

ABSTRACT:
The activity of supported silver catalysts, which have been used for the direct oxidation of ethylene to ethylene oxide with molecular oxygen or air and to which from 1 to 1,000 parts, per 1 million parts of catalyst, of cesium and/or rubidium have been applied, is improved by washing the catalyst with an inert liquid prior to the application of cesium and/or rubidium.

REFERENCES:
patent: 2437930 (1948-03-01), Bergsteinsson et al.
patent: 2764598 (1956-09-01), Egbert
patent: 4033903 (1977-07-01), Maxwell
patent: 4051068 (1977-09-01), Rebsdat et al.
patent: 4094889 (1978-06-01), Hayden et al.
patent: 4123385 (1978-10-01), Rebsdat et al.
patent: 4125480 (1978-11-01), Maxwell

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