Method of preparing hydrofluorocarbon

Details Method of preparing hydrofluorocarbon Method of preparing hydrofluorocarbon

1996-11-01

1998-05-26

Siegel, Alan

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

Organic compounds

Halogen containing

C07C 1908

Patent

active

057568693

ABSTRACT:
The invention relates to a method of preparing a saturated hydrofluorocarbon represented by C.sub.n H.sub.p F.sub.z, by reducing a chlorofluorocarbon or hydrochlorofluorocarbon represented by C.sub.n H.sub.x Cl.sub.y F.sub.z by hydrogen in the presence of a catalyst having palladium and bismuth, wherein "n" is an integer within a range from 3 to 6, "x" is an integer within a range from 0 to 2n, each of "y" and "z" is an integer within a range from 1 to 2n+1, x+y+z=2n+2 or 2n, p=x+y when x+y+z=2n+2, and p=x+y+2 when x+y+z=2n. The catalyst has a long lifetime in the reduction. According to the invention, conversion of the chlorofluorocarbon or hydrochlorofluorocarbon is high, and the saturated hydrofluorocarbon is prepared with a high yield and a high selectivity.

REFERENCES:
patent: 5326914 (1994-07-01), Baker

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