Supported palladium-gold catalysts and preparation of vinyl acetate therewith
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United States of America Patent
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Issued Date -
May 13, 2010
app pub date -
Nov 12, 2008
filing date -
Nov 12, 2008
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Abandoned
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Abstract
Disclosed is a catalyst. The catalyst comprises palladium, gold, and a support comprising titanium dioxide and tungsten trioxide. The support preferably comprises from 75 wt % to 99 wt % of titanium dioxide and from 1 wt % to 25 wt % of tungsten trioxide. A method for preparing the catalyst is also disclosed. The method comprises impregnating the support with a palladium compound and a gold compound, calcining the impregnated support, and then reducing the calcined support. Further disclosed is a method for preparing vinyl acetate with the catalyst. The catalyst exhibits improved catalytic activity and selectivity.
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