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    • 3. 发明公开
    • 플루오르화 유기 화합물 제조 방법
    • 生产氟化有机化合物的方法
    • KR1020080083050A
    • 2008-09-12
    • KR1020087018963
    • 2007-01-03
    • 허니웰 인터내셔널 인코포레이티드
    • 퉁슈에성무코파야이수딥밴더푸이마이클마징지보츠체릴라이트바바라필립스스티븐디두베이라제쉬머켈대니얼씨
    • C07C17/087C07C21/19
    • C07C19/10C07C17/04C07C17/06C07C17/087C07C17/206C07C17/21C07C17/25C07C21/18C07C19/01C07C21/073
    • Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF=CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCI2=CCICH2CI (which may be purchased or synthesized from 1,2,3-trichloropropane) is fluorinated (preferably with HF in gas-phase in the presence of a catalyst) to synthesize a compound such as CFaCCl=CH2, preferably in a 80-96% selectivity. The CF3CCl=CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf, preferably in a gas-phase catalytic reaction using activated carbon as the catalyst. For the first step, a mixture Of Cr2O3 and FeCl3/C is preferably used as the catalyst to achieve high selectivity to CF3CCl=CH2 (96%). In the second step, SbCl5/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.
    • 公开了用于制备氟化烯烃的方法,优选适于商业化CF 3 CF = CH 2(1234yf)。 在优选实施方案中可以使用三个步骤,其中诸如CCI 2 = CCICH 2 Cl(其可以从1,2,3-三氯丙烷购买或合成)的原料被氟化(优选在催化剂存在下的气相中用HF) 合成化合物如CFaClCl = CH 2,优选80-96%的选择性。 CF 3 CCl = CH 2优选使用SbCl 5作为催化剂转化为CF 3 CFClCH 3(244-异构体),然后将其选择性地转化为1234yf,优选使用活性炭作为催化剂进行气相催化反应。 对于第一步,优选使用Cr 2 O 3和FeCl 3 / C的混合物作为催化剂,以实现对CF 3 CCl = CH 2(96%)的高选择性。 在第二步中,SbCl 5 / C优选用作用于将1233xf转化为244-异构体CF 3 CFClCH 3的选择性催化剂。 中间体优选通过蒸馏分离和纯化,并用于下一步骤而不进一步纯化,优选纯度高于约95%。