Production of hydrofluorocarbons

Details Production of hydrofluorocarbons Production of hydrofluorocarbons

1993-06-04

1995-08-29

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 2118

Patent

active

054462150

ABSTRACT:
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.degree. 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.

REFERENCES:
patent: 3377394 (1968-04-01), Boudakian et al.
patent: 5344998 (1994-09-01), Martin et al.
patent: 5386064 (1995-01-01), Woodcock et al.
Knunyants et al., "Some Reactions of Fluorine-Containing Ethers", Bulletin of the Academy of Sciences of the USSR, Div of Chemical Science, Oct. 1972, vol. 21, No. 10, pp. 2177-2180.

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