METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS
    5.
    发明申请
    METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS 审中-公开
    生产氟化有机化合物的方法

    公开(公告)号:US20150315108A1

    公开(公告)日:2015-11-05

    申请号:US14269251

    申请日:2014-05-05

    IPC分类号: C07C17/20

    摘要: 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 CCl2═CClCH2Cl (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 CF3CCl═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%.

    摘要翻译: 公开了用于生产氟化烯烃的方法,优选适于CF 3CF≡CH2(1234yf)的商业化。 在优选实施方案中可以使用三个步骤,其中诸如CCl 2 = CClCH 2 Cl(其可以由1,2,3-三氯丙烷购买或合成)的原料被氟化(优选在气相存在下,在HF的存在下) 合成化合物如CF 3 CCl = CH 2,优选选择性为80-96%。 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,优选在使用活性炭作为催化剂的气相催化反应中。 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%。

    Processes for synthesis of 1,3,3,3-tetrafluoropropene
    10.
    发明授权
    Processes for synthesis of 1,3,3,3-tetrafluoropropene 有权
    合成1,3,3,3-四氟丙烯的方法

    公开(公告)号:US07371904B2

    公开(公告)日:2008-05-13

    申请号:US11118504

    申请日:2005-04-29

    摘要: Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene which comprises, in one embodiment, reacting a compound of CF3X1 with a compound of CX2H═CHX3, wherein X1, X2, and X3 are each independently selected from the group consisting of fluorine, chlorine, bromine and iodine, to produce a reaction product comprising a compound of CF3CH═CHX3, wherein X3 is as described above; and when X3 is not fluorine, fluorinating the compound to produce 1,3,3,3-tetrafluoropropene. The process in another embodiment comprises preparing tetrafluoropropene comprising thermally cracking one or more compounds capable of producing a reaction mixture which preferably comprises diflurocarbene radicals and vinylidene fluoride, and converting said reaction mixture into—tetrafluoropropene (1,3,3,3-tetrafluoropropene).

    摘要翻译: 公开了一种用于合成1,3,3,3-四氟丙烯的方法,其包括在一个实施方案中使CF 3 N 1 X 1的化合物与 CX 2 H-CHX 3其中X 1,X 2和X 3, SUP>各自独立地选自氟,氯,溴和碘,以产生包含CF 3 CH-CH 3 3的化合物的反应产物,其中 X 3如上所述; 当X 3不是氟时,氟化该化合物以产生1,3,3,3-四氟丙烯。 在另一个实施方案中的方法包括制备四氟丙烯,其包括热裂化一种或多种能够产生反应混合物的化合物,所述化合物优选包含二氟甲基和偏二氟乙烯,并将所述反应混合物转化为四氟丙烯(1,3,3,3-四氟丙烯)。