Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1995-06-28
1997-04-01
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
570166, 570168, C07C 1708
Patent
active
056168209
ABSTRACT:
The invention relates to a process for the manufacture of 1,1,1,2-tetrafluoro-2-chloroethane and of pentafluoroethane.
The process, which consists of the gas phase catalytic fluorination of at least one pentahaloethane of formula C.sub.2 HX.sub.2-n F.sub.3+n in which X denotes a chlorine or bromine atom and n the number 0 or 1 by means of hydrofluoric acid, is characterized in that there is used a mixed catalyst composed of oxides, halides and/or oxyhalides of nickel and chromium deposited on a support consisting of aluminium fluoride or a mixture of aluminium fluoride and alumina.
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Cheminal Bernard
Lacroix Eric
Lantz Andr e
Elf Atochem S.A.
Siegel Alan
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