1,1,1,2-四氟乙烷的合成研究

Study on Synthesis of 1, 1, 1, 2-tetrafluoroethane

1，1，1，2-四氟乙烷（CF3CH2F，HFC-134a）作为氟氯烃（CFCs）无污替代物广泛应用于致冷、发泡及气溶胶等行业。该文叙述了HFC－134a的合成路线，通过对四氯乙烯（PCE）合成路线及三氯乙烯（TCE）合成路线的比较，选择了以TCE为原料，经过中间体1，1，1-三氟－2－氯乙烷（HCFC－133a）两步气相氟化合成HFC－134a的路线。

1, 1, 1, 2-tetrafluoroethape. (CF,CH,F, HFC-134a ), as a prime substitute of CFCs, is .f dely used in refrigeration, fbaming and blowing application. This paper described different routes to produce HFC-134a' The process for preparing HFC-l34a by a two step vapor-phase catalytic fluorination reaction of trichloroethylene (TCE) with anhydrous hydrogen fluorie (AHF) via 1, 1, 1-trifluoro-2-chloroethane (CF3CH2Cl，HCFC-133a) as an intemediate was relatively resonable among two kinds of industrialized routes,in which PCE and TCE are raw materials respectively.