Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1989-10-23
1991-04-16
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549536, 549537, C07D30110
Patent
active
050084135
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.
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Johnson Kenneth H.
Raymond Richard L.
Russell Mark W.
Scientific Design Company, Inc.
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