Carrier catalyst, process for the production thereof, and...

Details Carrier catalyst, process for the production thereof, and... Carrier catalyst, process for the production thereof, and...

B - Operations, Transporting

01

J

B01J 23/80 (2006.01) B01J 23/52 (2006.01) B01J 23/58 (2006.01) B01J 23/60 (2006.01) B01J 37/02 (2006.01) C07C 67/055 (2006.01) C07C 69/15 (2006.01)

Patent

CA 2128161

Abstract Surface impregnated catalyst, process for the production thereof, and use thereof for the preparation of vinyl acetate The invention relates to Pd/R/Au, Pd/R/Ba or Pd/R/Cd supported catalysts built up in the form of an outer layer, the production thereof and the use thereof for preparing vinylacetate from ethylene, acetic acid and oxygen in the gas phase. The specified catalysts are produced by impregnating the support particles with a solution of salts of the corresponding elements and then drying them, with the dynamic viscosity of the solution being at least 0.003 Pa?s and the solution volume in impregnation being more than 80 % of the pore volume of the support particles and the duration of the impregna- tion and also the time until commencement of the drying being selected 80 as to be sufficiently short for, after completion of the drying, the specified metal salts to be present in an outer layer of from 5 % to 80 % of the pore volume of the support particles.

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