Patent ID: 7329786

Claim:
A process for producing CF 3 CFHCF 3 comprising: contacting a C-3 reactant comprising one or more of perhydrogenated or partially halogenated C-3 hydrocarbons with Cl 2 and HF in the presence of a first catalyst at a first temperature to form a C-3 product comprising a C-3 perhalogenated compound; contacting the C-3 product with HF in the presence of a second catalyst at a second temperature to form a CF 3 CCl 2 CF 3 product, the CF 3 CCl 2 CF 3 product comprising a mole ratio of CF 3 CCl 2 CF 3 to CF 3 CF 3 CFClCClF 2 greater than 2:1; contacting the CF 3 CCl 2 CF 3 product with HF in the presence of a third catalyst at a third temperature to form CF 3 CClFCF 3; and contacting the CF 3 CClFCF 3 with H 2 in the presence of a fourth catalyst at a fourth temperature to produce CF 3 CFHCF 3 .