Patent ID: 8426656

Claim:
A process for the formation of trans-1-chloro-3,3,3-trifluoropropene and trans-1,3,3,3-tetrafluoropropene comprising the steps of: (a) reacting 1,1,1,3,3-pentachloropropane, 1,1,3,3-tetrachloropropene, or 1,3,3,3-tetrachloropropene, alone or in combination, with hydrogen fluoride in the presence of a fluorination catalyst to co-produce greater than about 50% yield of trans-1-chloro-3,3,3-trifluoropropene and 3-chloro-1,1,1,3-tetrafluoropropane; and (b) dehydrohalogenating the 3-chloro-1,1,1,3-tetrafluoropropane formed in step (a) to produce greater than about 50% yield of trans-1,3,3,3-tetrafluoropropene and/or trans-1-chloro-3,3,3-trifluoropropene.