Patent ID: 8563789

Claim:
A process for producing 1,1,1,2-tetrafluoropropene, comprising the steps of: a) fluorinating tetrachloropropene to form 2-chloro-3,3,3-trifluoropropene and HCl and first co-products in the presence of a catalyst selected from the group consisting of homogeneous fluorination catalyst selected from the group consisting of SbCl 5 , TiCl 4 , SnCl 4 and heterogenous catalyst comprising a supported or unsupported chromium catalyst, said heterogenous catalyst optionally further comprising a co-catalyst selected from the group consisting of nickel, zinc, cobalt and magnesium and thereafter b) fluorinating said 2-chloro-3,3,3-tri-fluoropropene, in a gas phase, in the presence of a catalyst selected from the group consisting of supported chromium catalyst, unsupported chromium catalyst and mixtures thereof said chromium catalyst optionally further comprising a co-catalyst selected from the group consisting of nickel, cobalt and magnesium, to form 1,1,1,2-tetrafluoropropene and second co-products.