Controlled addition of promoters to ethylene oxide catalysts (11)
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United States of America Patent
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Jan 1, 1985
Issued Date -
N/A
app pub date -
Aug 30, 1983
filing date -
Apr 2, 1982
priority date (Note) -
Expired
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Abstract
An improved method is disclosed for improving the selectivity of supported silver catalysts by incorporating a promoter therein. The improvement comprises forming a solution of a compound of the promoter and an anion which is not a catalyst poison and is selected from the group consisting of unsaturated carboxylic acids, aminoorganic acids, and hydroxybenzoic acids in a solvent and contacting the catalyst with the solution.
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