To obtain a method for removing chlorine from a chlorofluorocarbon, by which the corresponding fluorocarbon can be obtained in a high yield, by reacting the chlorofluorocarbon with a hydrofluorocarbon in the presence of a solid fluorination catalyst in a specific temperature range.

This method for removing chlorine from a chlorofluorocarbon comprises reacting (A) the chlorofluorocarbon(CFC) of the formula: CnFxCly [(n) is 1 to 3; (x)+(y)=2(n)+2; and (x) is 1 to 7], preferably the compound selected from CFC 114 and CFC 115, with (C) a hydrofluorocarbon(HFC) of the formula: Cn'Fx'Hy' [(n'), (x') and (y') are the same as (n), (x) and (y), respectively], preferably the compound selected from HFC 125 and HFC 134a, in the presence of (B) a solid fluorination catalyst, preferably a chromium (III) compound (for example, chromium oxide) in a temperature range of 200 to 400°C, preferably 250 to 320°C.