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US07659435B2 Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,2,3-pentafluoropropane 失效
制备1,1,1,3,3-五氟丙烷和1,1,1,2,3-五氟丙烷的方法

Process for the preparation of 1,1,1,3,3-pentafluoropropane and 1,1,1,2,3-pentafluoropropane
Abstract:
A process is disclosed for the manufacture of CF3CH2CHF2 and CF3CHFCH2F. The process involves (a) reacting hydrogen fluoride, chlorine, and at least one halopropene of the formula CX3CCl═CClX (where each X is independently F or Cl) to produce a product including both CF3CCl2CClF2 and CF3CClFCCl2F; (b) reacting CF3CCl2CClF2 and CF3CClFCCl2F produced in (a) with hydrogen to produce a product including both CF3CH2CHF2, and CF3CHFCH2F; and (c) recovering CF3CH2CHF2 and CF3CHFCH2F from the product produced in (b). In (a), the CF3CCl2CF3 and CF3CClFCClF2 are produced in the presence of a chlorofluorination catalyst including (i) a crystalline alpha-chromium oxide where at least 0.05 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by divalent copper, and/or (ii) a chromium-containing composition of (i) which has been treated with a fluorinating agent.
Abstract(Chinese):

公开了用于制造CF 3 CH 2 CHF 2和CF 3 CHFCH 2 F的方法。 该方法包括（a）使氟化氢，氯和至少一种式CX3CCl-CClX（其中每个X独立地为F或Cl）的卤代丙烯反应以产生包含CF 3 CCl 2 CClF 2和CF 3 CClFCCl 2 F的产物; （b）使（a）中制备的CF 3 CCl 2 CClF 2和CF 3 CClFCCl 2 F与氢反应，生成包含CF 3 CH 2 CHF 2和CF 3 CHFCH 2 F的产物; 和（c）从（b）中制备的产物中回收CF 3 CH 2 CHF 2和CF 3 CHFCH 2 F。 在（a）中，CF 3 CCl 2 CF 3和CF 3 CClFCClF 2在氯氟化催化剂的存在下制备，包括（i）结晶α-氧化铬，其中至少0.05原子％的α-氧化铬晶格中的铬原子被二价铜 ，和/或（ⅱ）已经用氟化剂处理的（ⅰ）的含铬组合物。

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