DEHYDROFLUORINATION OF PENTAFLUOROALKANES TO FORM TETRAFLUOROOLEFINS
    1.
    发明申请
    DEHYDROFLUORINATION OF PENTAFLUOROALKANES TO FORM TETRAFLUOROOLEFINS 审中-公开
    二氟甲磺酸脱氢形成四氢呋喃

    公开(公告)号:US20170022128A1

    公开(公告)日:2017-01-26

    申请号:US15279680

    申请日:2016-09-29

    Applicant: ARKEMA INC.

    Abstract: A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprises dehydrofluorinating a pentafluoroalkane in a gas phase in the presence of a catalyst comprising chromium oxyfluoride. In a preferred embodiment, 2,3,3,3-tetrafluoropropene (HFO-1234yf) is produced by forming a catalyst comprising chromium oxyfluoride by calcining CrF3.xH2O, where x is 1-10, in the presence of a flowing gas comprising nitrogen to form a calcined chromium oxyfluoride, and dehydrofluorinating 1,1,1,2,2-pentafluoropropane (HFC-245cb) in a gas phase in the presence of the catalyst to form the 2,3,3,3-tetrafluoropropene (HFO-1234yf).

    Abstract translation: 一种生产四氟烯烃的方法,如2,3,3,3-四氟丙烯(HFO-1234yf),包括在包含氟氧化铬的催化剂存在下,在气相中脱氟氟化五氟烷烃。 在优选的实施方案中,通过在包含氮气的流动气体存在下,通过煅烧CrF 3·xH 2 O(其中x为1-10)形成包含氟氧化铬的催化剂来生产2,3,3,3-四氟丙烯(HFO-1234yf) 形成煅烧的氟氧化铬,在催化剂存在下,在气相中脱氟化氢化1,1,1,2,2-五氟丙烷(HFC-245cb),形成2,3,3,3-四氟丙烯(HFO- 1234yf)。

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