| abstract |
The invention relates to a process for manufacturing 1,1,1,2-tetrafluoropropene (1234yf, CF 3 —CF═CH 2 ) from 1,1,3,3-tetrachlororopropene (1230za, CCl 2 ═CH—CHCl 2 ) and/or 1,1,1,3,3-pentachloropropane (240fa, CCl 3 CH 2 CHCl 2 ). The process comprises an isomerization step of 1-chloro-3,3,3 trifluoropropene (1233zd, CF 3 —CH═CHCl) to 2-chloro-3,3,3 trifluoropropene (1233xf or CF 3 —CCl═CH 2 ). |