Chemistry of inorganic compounds – Silicon or compound thereof – Binary compound
Reexamination Certificate
2005-02-01
2005-02-01
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Silicon or compound thereof
Binary compound
C423S333000, C423S305000
Reexamination Certificate
active
06849243
ABSTRACT:
The invention relates to a supported catalyst and the production and use thereof in the synthesis of vinyl acetate in the gaseous phase from ethylene, acetic acid and oxygen, or from gases containing oxygen, whereby the activity and selectivity are simultaneously improved. The catalyst contains palladium, at least one alkali metal compound and optionally one or more catalyst accelerators, in particular, gold, barium and/or cadmium on a porous support. Said support contains at least one reducible metal oxide, in particular oxides of the elements of groups IIIb, IVb, Vb, VIb from the periodic table of elements. Once the support has been loaded with at least one palladium compound, a reduction is carried out at a temperature of >200° C.
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Dambeck Günter
Dingerdissen Uwe
Geiss Gerhardt
Hagemeyer Alfred
Kühlein Klaus
Celanese Chemicals Europe GmbH
Cooke Colleen P.
Silverman Stanley S.
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