Improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (hcfc-244bb)

摘要

The present invention provides a kind of improved production 2-chloro-1,1,1, it is reacted by 2-chloro-3 2-tetrafluoropropane (HCFC-244bb), 3,3 trifluoro propenes (HCFO-1233xf) and hydrogen fluoride are in liquid phase reactor, in the presence of hydrogen chloride and liquid-phase fluorination catalyst. It is about 100 pounds or more that the pressure from external source is added in the reaction of hydrogen chloride. The HCFC-244bb is that intermediate produces 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).