申请人:Mexichem Fluor S.A. de C.V.
公开号:EP2990397A1
公开(公告)日:2016-03-02
The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene (CF3CF=CH2), which process comprises dehydrohalogenating 1,1,1,2,2-pentafluoropropane (CH3CF2CF3, HFC-245ca), 1,1,1,2-tetrafluoro-2-chloropropane, 1,1,1,2,3-pentafluoropropane (CH2FCHFCF3, HFC-245eb) and/or 1,1,1,2-tetrafluoro-3-chloropropane in the presence of a base, the process further comprising the step of converting a trifluorodichloropropane or a difluorotrichloropropane or a fluorotetrachloropropane to CH3CF2CF3, 1,1,1,2-tetrafluoro-2-chloropropane, CH2FCHFCF3, and/or 1,1,1,2-tetrafluoro-3-chloropropane.
本发明提供了一种制备2,3,3,3-四氟丙烯(CF3CF=CH2)的工艺,该工艺包括在碱存在下脱氢卤化1,1,1,2,2-五氟丙烷(CH3CF2CF3,HFC-245ca)、1,1,1,2-四氟-2-氯丙烷、1,1,1,2,3-五氟丙烷(CH2FCHFCF3,HFC-245eb)和/或1,1,1、该工艺还包括将三氟二氯丙烷、二氟三氯丙烷或氟四氯丙烷转化为 CH3CF2CF3、1,1,1,2-四氟-2-氯丙烷、CH2FCHFCF3 和/或 1,1,1,2-四氟-3-氯丙烷的步骤。