Inventors:
Henry R. Nychka - E. Aurora NY
Richard E. Eibeck - Orchard Park NY
Assignee:
Allied Chemical Corporation - Morris Township, Morris County NJ
International Classification:
C07C 1710
Abstract:
Highly chlorinated hydrocarbons having one to three carbons such as CCl. sub. 4, C. sub. 2 Cl. sub. 6 and C. sub. 3 Cl. sub. 8 are reacted with HF in the presence of a fluorination catalyst such as gamma aluminum fluoride. The effluent is reacted with unhalogenated or underhalogenated hydrocarbons having 1 to 3 carbons, such as CH. sub. 4, CH. sub. 3 Cl, C. sub. 2 H. sub. 5 Cl, C. sub. 2 H. sub. 6, CH. sub. 2. dbd. CHCl and CFCl. dbd. CCl. sub. 2, and O. sub. 2 in the presence of an oxychlorination catalyst, such as cupric chloride with alkali halide or alkaline earth halide promoters on alpha aluminum fluoride. Fluorocarbons having 1 to 3 carbons such as CCl. sub. 2 F. sub. 2, C. sub. 2 Cl. sub. 3 F. sub. 3 and C. sub. 2 Cl. sub. 2 F. sub. 4 are separated from the effluent. Preferably, highly chlorinated materials are recycled onto the fluorination catalyst and underhalogenated materials are recycled onto the oxychlorination catalyst.