Ethylene oxide catalyst
First Claim
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1. A catalyst carrier body supporting metallic silver for the oxidation of ethylene to ethylene oxide, the carrier comprising alpha alumina, optionally including silica, and wherein the improvement consists of the inclusion of from 10 to 30% by weight of ZnO in the carrier body raw mix, and wherein the ZnO is converted to zinc spinel by the raw mix firing.
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Abstract
The performance of a silver on alumina catalyst for the oxidation of ethylene to ethylene oxide is improved by the inclusion, in the raw mix for the carrier of an oxide, or oxide precursor, of zinc, lanthanum, or magnesium in the amount of 7 to 40%, calculated as the oxide.
26 Citations
1 Claim
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1. A catalyst carrier body supporting metallic silver for the oxidation of ethylene to ethylene oxide, the carrier comprising alpha alumina, optionally including silica, and wherein the improvement consists of the inclusion of from 10 to 30% by weight of ZnO in the carrier body raw mix, and wherein the ZnO is converted to zinc spinel by the raw mix firing.
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Current AssigneeNorton Company (Compagnie De Saint-Gobain)
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Original AssigneeNorton Company (Compagnie De Saint-Gobain)
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InventorsSaleh, Ramzi Y., Kiovsky, Joseph R., Young, George W.
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Primary Examiner(s)Shine, W. J.
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Application NumberUS06/344,461Time in Patent Office624 DaysField of Search252/462, 252/463, 252/476, 252/455 R, 423/628, 549/536US Class Current502/253CPC Class CodesB01J 23/50 SilverB01J 23/68 with arsenic, antimony, bis...C07D 301/10 with catalysts containing s...
