| abstract |
A chromium-containing fluorination catalyst which comprises annactivity-promoting amount of zinc or a compound of zinc, a process fornincreasing the activity of a chromium-containing fluorination catalyst bynintroducing an activity promoting amount of zinc or a compound of zinc tonthe catalyst and a process for the production of fluorinated hydrocarbons, innparticular 1,1,1,2-tetrafluoroethane which comprises reacting a hydrocarbonnor a halogenated hydrocarbon, in particular 1-chloro-2,2,2-trifluoroethanenwhich hydrogen fluoride in the vapour phase in the presence of the zinc-promotednchromium-containing catalyst. |