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    • 8. 发明申请
    • PROCESS FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE
    • 制备2,3,3,3-四氯丙烯的方法
    • WO2010050373A3
    • 2010-11-25
    • PCT/JP2009067971
    • 2009-10-13
    • DAIKIN IND LTDNOSE MASATOSHITAKAHASHI KAZUHIROKOMATSU YUZOSUGIYAMA AKINARISHIBANUMA TAKASHI
    • NOSE MASATOSHITAKAHASHI KAZUHIROKOMATSU YUZOSUGIYAMA AKINARISHIBANUMA TAKASHI
    • C07C17/087C07C17/25C07C17/383C07C21/18
    • C07C17/25C07C17/087C07C17/383C07C21/18Y02P20/582C07C21/22
    • The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene comprising the steps of: (a) reacting 3,3,3-trifluoropropyne with hydrogen fluoride while heating to obtain a product containing 2,3,3,3-tetrafluoropropene; (b) separating the product obtained in Step (a) into Component A containing 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne, and Component B containing 1,3,3,3-tetrafluoropropene; (c) separating 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne contained in Component A obtained in Step (b) into each compound; (d) conducting a dehydrofluorination reaction by heating Component B obtained in Step (b) in the presence of a catalyst; (e) separating the product obtained in Step (d) into Component C containing 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne, and Component D containing 1,3,3,3-tetrafluoropropene; (f) separating 2,3,3,3-tetrafluoropropene and 3,3,3-trifluoropropyne contained in Component C obtained in Step (e) into each compound; and (g) conducting a dehydrofluorination reaction by heating Component D obtained in Step (e) in the presence of a catalyst. The present invention provides an effective and industrially applicable process for preparing 2,3,3,3-tetrafluoropropene.
    • 本发明提供一种制备2,3,3,3-四氟丙烯的方法,包括以下步骤:(a)在加热的同时使3,3,3-三氟丙炔与氟化氢反应,得到含有2,3,3,3-四氟丙烯的产物 -tetrafluoropropene; (b)将步骤(a)中获得的产物分离成含有2,3,3,3-四氟丙烯和3,3,3-三氟丙炔的组分A,以及含有1,3,3,3-四氟丙烯的组分B; (c)将步骤(b)中获得的组分A中所含的2,3,3,3-四氟丙烯和3,3,3-三氟丙炔分离成各化合物; (d)通过加热步骤(b)中获得的组分B在催化剂存在下进行脱氟化氢反应; (e)将步骤(d)中获得的产物分离成含有2,3,3,3-四氟丙烯和3,3,3-三氟丙炔的组分C,以及含有1,3,3,3-四氟丙烯的组分D; (f)将步骤(e)中获得的组分C中所含的2,3,3,3-四氟丙烯和3,3,3-三氟丙炔分离成各化合物; 和(g)通过加热在步骤(e)中获得的组分D在催化剂存在下进行脱氟化氢反应。 本发明提供了制备2,3,3,3-四氟丙烯的有效和工业上适用的方法。