Patent ID: 7981312

Claim:
A process for making CH 2 ═CFCF 3 or mixtures thereof with CHF═CFCHF 2 , comprising: contacting CCl 3 CF 2 CF 3 and optionally CCl 2 FCF 2 CClF 2 with H 2 in a reaction zone in the presence of a catalyst comprising a catalytically effective amount of palladium supported on a support selected from the group consisting of alumina, fluorided alumina, aluminum fluoride and mixtures thereof, to produce a product mixture comprising CH 2 ═CFCF 3 and, when CCl 2 FCF 2 CClF 2 is present, CHF═CFCHF 2 , wherein the mole ratio of H 2 to the total of CCl 3 CF 2 CF 3 and CCl 2 FCF 2 CClF 2 fed to the reaction zone is between about 1:1 and about 5:1; recovering CH 2 ═CFCF 3 or a mixture thereof with CHF═CFCHF 2 from the product mixture; and optionally separating at least a portion of any CHF═CFCHF 2 in the product mixture from the CH 2 ═CFCF 3 in the product mixture.