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    • 7. 发明申请
    • PROCESS FOR PREPARING 1,1,1,3,3-PENTAFLUOROPROPANE
    • 制备1,1,1,3,3-戊二醇的方法
    • WO1996026914A1
    • 1996-09-06
    • PCT/JP1996000273
    • 1996-02-08
    • DAIKIN INDUSTRIES LTD.AOYAMA, HirokazuSHIBATA, NoriakiYAMAMOTO, Akinori
    • DAIKIN INDUSTRIES LTD.
    • C07C19/08
    • C07C19/08C07C17/23
    • A process for preparing 1,1,1,3,3-pentafluoropropane comprising the step (A) of reducing 2,3-dichloro-1,1,1,3,3-pentafluoropropane with hydrogen in the presence of a hydrogenation catalyst under an atmospheric or elevated pressure by a vapor-phase reaction, the step (B) of introducing all of the products of the step (A) into a condenser to obtain a non-condensed component comprising hydrogen and hydrogen chloride and a condensed component comprising 1,1,1,3,3-pentafluoropropane or a non-condensed component comprising hydrogen and a condensed component comprising hydrogen chloride and 1,1,1,3,3-pentafluoropropane, the step (C) of separating hydrogen from the non-condensed component of the step (B) and recycling the hydrogen to the above step (A), and the step (D) of separating 1,1,1,3,3-pentafluoropropane from the condensed component of the step (B). This process makes it possible to prepare 1,1,1,3,3-pentafluoropropane industrially efficiently and economically.
    • 一种制备1,1,1,3,3-五氟丙烷的方法,包括在氢化催化剂存在下用氢还原2,3-二氯-1,1,1,3,3-五氟丙烷的步骤(A) 通过气相反应的大气压或升高的压力,将步骤(A)的所有产物引入冷凝器的步骤(B),以获得包含氢和氯化氢的未冷凝组分和包含1 ,1,1,3,3-五氟丙烷或包含氢的冷凝组分和包含氯化氢和1,1,1,3,3-五氟丙烷的缩合组分的步骤(C) 步骤(B)的冷凝组分并将氢气再循环到上述步骤(A),以及从步骤(B)的冷凝组分分离1,1,1,3,3-五氟丙烷的步骤(D)。 该方法可以在工业上有效和经济地制备1,1,1,3,3-五氟丙烷成为可能。