| 摘要 |
The invention relates to a process for manufacturing 1,1,1,2-tetrafluoropropene (1234yf, CF3—CF═CH2) from 1,1,3,3-tetrachlororopropene (1230za, CCl2═CH—CHCl2) and/or 1,1,1,3,3-pentachloropropane (240fa, CCl3CH2CHCl2). The process comprises a step of isomerization of 1,1,3,3-tetrafluoropropene (1230za) to 1,1,2,3-tetrachloropropene (1230xa) followed by conversion of the 1,1,2,3-tetrachloropropene (1230xa) to 1,1,1,2-tetrafluoropropene (1234yf) via a hydrofluorination process. |
| 主权项 |
1. A process for preparing 1,1,1,2-tetrafluoropropene (1234yf) from 1,1,3,3-tetrachloropropene (1230za) comprising the steps of:
isomerization of 1,1,3,3-tetrachloropropene (1230za) to 1,1,2,3-tetrachloropropene (1230xa); followed by conversion of said 1,1,2,3-tetrachloropropene (1230xa) to 1,1,1,2-tetrafluoropropene (1234yf) via a process comprising hydrofluorination. |
