Patent ID: 9556079
Date: 2017-01-31
CPC Classifications: B01J,C07B,C07C

Claim:
1. A chromium-containing fluorination catalyst which comprises from 0.5 to 25% by weight of zinc based on the total weight of the catalyst, said zinc being contained in aggregates which have a size across their largest dimension of up to 1 micron and which are distributed throughout at least the surface region of the catalyst and wherein greater than 40 weight % of the zinc-containing aggregates contain a concentration of zinc that is within ±1 weight % of the modal concentration of zinc in the zinc-containing aggregates and, wherein the catalyst is amorphous or partially crystalline containing from 0.4 to 5% by weight of one or more crystalline compounds of chromium and/or one or more crystalline compounds of zinc.