Processes using aluminum fluoride catalyst compositions for prep

Details Processes using aluminum fluoride catalyst compositions for prep Processes using aluminum fluoride catalyst compositions for prep

1992-04-07

1993-09-07

Siegel, Alan

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

Organic compounds

Halogen containing

C07C 1708

Patent

active

052431061

ABSTRACT:
A process is disclosed for transforming a saturated reactant (e.g. 1,1,2-trichloro-1,2,2-trifluoroethane) into a saturated product (e.g. 1,1-dichloro-1,2,2,2-tetrafluoroethane) by contacting a gaseous mixture comprising said reactant with an aluminum fluoride catalyst at an elevated temperature, which is characterized using a catalyst composition consisting essentially of an aluminum fluoride prepared by the reaction of aluminum hydroxide and HF. Also disclosed is a process for producing 2-chloro-1,1,1,2-tetrafluoroethane and/or 1,1,1,2-tetrafluoroethane by hydrodechlorinating 1,1-dichloro-1,2,2,2-tetrafluoroethane produced by said transformation.

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F. N. Tebbe, J. Am. Ceram. Soc., 71 [4] pp. 204-206.
Chemical Abstracts 74:55778t.
Vecchio et al., J. Fluorine Chem, 4, pp. 117-139.

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