[EN] PROCESS FOR PRODUCING 1,1,1,2-TETRAFLUOROPROPENE<br/>[FR] PROCÉDÉ DE FABRICATION DE 1,1,1,2-TÉTRAFLUOROPROPÈNE
申请人:DAIKIN IND LTD
公开号:WO2009084703A1
公开(公告)日:2009-07-09
Using hexafluoropropene (HFP) as a raw material, 1,1,1,2-tetrafluoropropene (HFC-1234yf) is obtained by hydrogenation, dehydrofluorination and distillation. In a series of reactions comprised of hydrogenating HFP to obtain 1,1,1,2,3,3-hexafluoropropane (HFC-236ea), dehydrofluorinating the HFC-236ea to obtain 1,1,1,2,3-pentafluoropropene (HFC-1225ye), hydrogenating the HFC-1225ye to obtain 1,1,1,2,3-pentafluoropropane (HFC-245eb), and dehydrofluorinating the HFC-245eb to obtain HFC-1234yf, the hydrogenations and the dehydrofluorinations are respectively carried out in the one step, and then distillation is carried out so that HFC-1234yf can be obtained. Alternately, HFC-1234yf can also be obtained by hydrogenating HFP to directly obtain HFC-245eb, and separating the HFC-245eb by distillation and dehydrofluorinating it. Thus, HFC-1234yf can be produced with a high selectivity.
使用六氟丙烯(HFP)作为原料,通过氢化、脱氟化和蒸馏得到1,1,1,2-四氟丙烯(HFC-1234yf)。在一系列反应中,将HFP氢化得到1,1,1,2,3,3-六氟丙烷(HFC-236ea),将HFC-236ea脱氟化得到1,1,1,2,3-五氟丙烯(HFC-1225ye),将HFC-1225ye氢化得到1,1,1,2,3-五氟丙烷(HFC-245eb),然后将HFC-245eb脱氟化得到HFC-1234yf,氢化和脱氟化分别在一步中进行,然后进行蒸馏以获得HFC-1234yf。另外,也可以通过将HFP氢化直接得到HFC-245eb,然后通过蒸馏和脱氟化分离HFC-245eb来获得HFC-1234yf。因此,可以高选择性地生产HFC-1234yf。