Shell catalyst for producing alkenyl carboxylic acid esters having an improved pd and au distribution
AssigneeClariant International Ltd.
InventorsRoman BOBKA, Gerhard MESTL, Peter SCHECK
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Abstract
The present invention relates to a Pd- and Au-containing shell catalyst which is characterised by an improved Pd and Au distribution. The invention also relates to two methods for producing said catalyst and to a method for producing vinyl acetate monomer using said catalyst.
Claims15
A Pd- and Au-containing shell catalyst wherein it has a concentration profile of the palladium and of the gold within the shell catalyst where the maximum of the palladium concentration and the maximum of the gold concentration are disposed in a range from 0 to 40 micrometers from the geometric macroscopic surface of the catalyst shaped body and the distance between the maximum of the palladium concentration and the maximum of the gold concentration is in the range from 0 to 10 micrometers.
Dependencies are inferred from the claim text.