Gas-phase fluorination

Details Gas-phase fluorination Gas-phase fluorination

1990-05-04

1991-09-24

Evans, J. E.

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

Organic compounds

Halogen containing

570166, C07C 1720, C07C 1902

Patent

active

050515373

ABSTRACT:
An improved process is disclosed for the manufacture of 1,1,1,2-tetrafluoroethane, more particularly, a gas-phase reaction of 1,1,1-trifluorochloroethane with hydrogen fluoride in the presence of a catalyst, a selected metal on aluminum fluoride, and molecular oxygen which process minimizes the oxidation of liberated hydrogen chloride to chlorine and water, extends catalyst life and improves yield.

REFERENCES:
patent: 2005710 (1935-06-01), Daudt et al.
patent: 2744147 (1956-05-01), Milks
patent: 2744148 (1956-05-01), Ruh et al.
patent: 3904701 (1975-09-01), Schultz et al.
patent: 4147733 (1979-04-01), Fiske et al.

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