Patent ID: 7129383

Claim:
A process for the preparation of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane, comprising: (a) contacting a mixture comprising hydrogen fluoride, chlorine, and at least one starting material selected from the group consisting of halopropenes of the formula CX 3 CCl═CX 2 and halopropanes of the formula the CX 3 CClYCX 3 , wherein each X is independently selected from the group consisting of F and Cl, and Y is selected from the group consisting of H, Cl and F, provided that the number of X and Y which are F totals no more than six, with a chlorofluorination catalyst in a reaction zone to produce a product mixture comprising CF 3 CClFCF 3 , HCl, HF, and underfluorinated halogenated hydrocarbon intermediates; wherein said chlorofluorination catalyst comprises at least one chromium-containing component selected from (i) a crystalline alpha-chromium oxide where at least 0.05 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by nickel, trivalent cobalt or both nickel and trivalent cobalt, provided that no more than 2 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by nickel and that the total amount of chromium atoms in the alpha-chromium oxide lattice that are replaced by nickel and trivalent cobalt is no more than 6 atom %, and (ii) a fluorinated crystalline oxide of (i).