Process for preparing a catalyst for oxidation of ethylene to et

Details Process for preparing a catalyst for oxidation of ethylene to et Process for preparing a catalyst for oxidation of ethylene to et

1988-06-27

1990-01-30

Shine, W. J.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

549534, B01J 2304, B01J 2350

Patent

active

048973769

ABSTRACT:
An improved silver catalyst for the oxidation of ethylene with molecular oxygen is made by impregnating a support with a silver salt prepared by reacting a silver compound with a neo-acid, in a hydrocarbon solvent with the reaction completed under reflux conditions; drying and activating the resultant precatalyst by heating in air; thereafter impregnating the activated catalyst with an amount, 800 to 5000 wppm of alkali metal, preferably Cs, to deactivate the catalyst to form a catalyst precursor and heating the catalyst precursor at 450.degree.-700.degree. C. for 0.1 to 4.5 hours at a steady state in a substantially inert atmosphere to reactivate it.

REFERENCES:
patent: 4555501 (1985-11-01), Armstrong
patent: 4663303 (1986-02-01), Becker et al.
patent: 4760042 (1988-07-01), Armstrong
patent: 4774222 (1988-09-01), Rashkin

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