摘要 |
A process of isomerizing a chlorofluorocarbon of the formula: CClFYCClFX wherein X and Y are independently selected from chlorine and fluorine provided that X is not -Cl when Y is -F to the compound of the formula: CCl2YCF2X The process comprises contacting the chloroflurocarbon 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. |