Carrier catalyst, process for the production thereof, and use th

Details Carrier catalyst, process for the production thereof, and use th Carrier catalyst, process for the production thereof, and use th

1994-07-18

1996-11-05

Mc Farlane, Anthony

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502326, 502339, 502340, B01J 2302, B01J 2306, B01J 2340, B01J 2342

Patent

active

055717713

ABSTRACT:
The invention relates to Pd/K/Au, Pd/K/Ba or Pd/K/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 impregnation and also the time until commencement of the drying being selected so 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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