Process for preparing chlorofluorocarbons via an in situ generated activated aluminum trihalide catalyst and products resulting therefrom

摘要

A process for isomerizing a chlorofluorocarbon of the formula:P PCClFYCClFXPPwherein X and Y are independently selected from chlorine and fluorine provided that X is not --Cl when Y is --FPPto the compound of the formula:PPCCl. sub.2 YCF.sub.2 XPPThe process comprises contacting the chlorofluorocarbon with an activated aluminum trihalide catalyst. The catalyst is prepared by contacting the chlorofluorocarbon with anhydrous aluminum trichloride in the presence of a metal. The metal is selected from the group consisting of stainless steel, chromium, manganese, molybdenum, tungsten and combinations thereof.