Modified carrier for silver based ethylene oxide catalyst
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United States of America Patent
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Apr 26, 2016
Grant Date -
Aug 7, 2014
app pub date -
Feb 7, 2014
filing date -
Feb 7, 2013
priority date (Note) -
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Abstract
Silver based ethylene oxide catalysts having enhanced stability are disclosed. The enhanced stability silver based ethylene oxide catalysts include an alumina carrier which has been modified to include cavities on the surface of the carrier. The presence of the cavities on the surface of the modified carrier stops or at least impedes the motion of silver particles on the surface of the carrier during an epoxidation process. In particular, the cavities on the surface of the alumina carrier effectively trap and/or anchor silver particles and prevent them from further motion.
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