公开(公告)号：US06369284B1

公开(公告)日：2002-04-09

申请号：US09355235

申请日：1999-07-26

申请人： Mario Joseph Nappa ,  V.N.Mallikarjuna Rao

发明人： Mario Joseph Nappa ,  V.N.Mallikarjuna Rao

IPC分类号： C07C1725

CPC分类号： B01J27/12 ,  B01J21/18 ,  B01J37/084 ,  C07C17/25 ,  Y02P20/582 ,  C07C21/18

摘要： A process is disclosed for the manufacture of a pentafluoropropene of the formula: CFX═CYCF3 where X is selected from H and F and where Y is F when X is H and Y is H when X is F. The process involves contacting a hexafluoropropane of the formula: CF2XCHYCF3 at a temperature of from about 200° C. to 500° C. with a catalyst, optionally in the presence of an inert gas. Suitable catalysts include (1) catalysts of (a) at least one compound selected from the oxides, fluorides and oxyfluorides of magnesium, zinc and mixtures of magnesium and zinc, and optionally (b) at least one compound selected from the oxides, fluorides and oxyfluorides of aluminum; provided that the atomic ratio of aluminum to the total of magnesium and zinc in said catalyst is about 1:4, or less (e.g., 1:9), (2) lanthanum fluoride, (3) fluorided lanthanum oxide, (4) activated carbon, and (5) three-dimensional matrix carbonaceous materials.

摘要翻译： 公开了用于制造下式的五氟丙烯的方法：其中X选自H和F，其中当X为H时Y为F，X为F时Y为H时，Y为H.该方法包括使六氟丙烷与 式中：CF 2 XCHYCF 3在约200℃至500℃的温度下与催化剂，任选在惰性气体存在下反应。 合适的催化剂包括（1）选自（a）至少一种选自镁，锌的氧化物，氟化物和氟氧化物以及镁和锌的混合物的化合物的催化剂，和任选地（b）至少一种选自氧化物，氟化物和 铝的氟化物; 条件是所述催化剂中铝与镁和锌的原子比为约1:4或更小（例如1:9），（2）氟化镧，（3）氟化镧氧化物，（4）活化 碳，和（5）三维基质碳质材料。