PRODUCTION OF HYDROFLUOROCARBONS

摘要

A process for the production of a hydro(halo)fluorocarbon which comprises contacting an alpha -fluoroether in the vapour phase at an elevated temperature with a catalyst and wherein the catalyst is treated whereby to maintain and/or restore its activity. The catalyst treatment comprises either: (i) heating the catalyst to an elevated temperature above about 250 DEG C. in the absence of an alpha -fluoro ether, or (ii) contacting the catalyst at an elevated temperature with an oxidising agent whilst or between the times when the alpha -fluoro ether is contacted with the catalyst. The catalyst may be an oxidation promoting metal, for example zinc, iron or copper, carried on a metal oxide, fluoride or oxyfluoride support.