公开(公告)号：EP3904319A1

公开(公告)日：2021-11-03

申请号：EP20900673.3

申请日：2020-02-24

申请人： Zhejiang Research Institute of Chemical Industry Co., Ltd. ,  Zhejiang Lantian Environmental Protection Hi-Tech Co., Ltd. ,  Sinochem Lantian Co., Ltd.

发明人： LIU, Wucan ,  ZHANG, Jianjun ,  HAN, Wenfeng ,  WANG, Shucheng ,  ZHOU, Feixiang

IPC分类号： C07C19/10 ,  C07C17/00 ,  C07C17/20 ,  B01J23/06 ,  B01J23/04 ,  B01J23/745

摘要： Disclosed is a method for improving the stability of a catalyst in recycling HFC-23. The recycling is realized by means of a fluorine-chlorine exchange reaction with HFC-23 and a halogenated hydrocarbon. The catalyst for the fluorine-chlorine exchange reaction comprises a main body catalyst and a metal oxide, wherein the metal oxide is selected from at least one metal oxide of K, Na, Fe, Co, Cu, Ni, Zn or Ti, and has an addition amount of 0.1-5wt%. The present invention has advantages such as a good catalyst stability, a long life, and a low content of by-product CFC-12.

公开(公告)号：EP3904318A1

公开(公告)日：2021-11-03

申请号：EP20899849.2

申请日：2020-02-24

申请人： Zhejiang Research Institute of Chemical Industry Co., Ltd. ,  Zhejiang Lantian Environmental Protection Hi-Tech Co., Ltd. ,  Sinochem Lantian Co., Ltd.

发明人： ZHANG, Jianjun ,  HAN, Wenfeng ,  WANG, Shucheng ,  LIU, Wucan ,  ZHOU, Feixiang

IPC分类号： C07C17/20 ,  C07C19/10 ,  B01J23/10

摘要： Disclosed is a method for reducing carbon deposits on a catalyst in recycling HFC-23. The recycling is realized by means of a fluorine-chlorine exchange reaction with HFC-23 and a halogenated hydrocarbon. The catalyst for the fluorine-chlorine exchange reaction comprises a main body catalyst and a precious metal. The precious metal is selected from at least one of Pt, Pd, Ru, Au or Rh, and has an addition amount of 0.01-2wt%. During the fluorine-chlorine exchange reaction, hydrogen gas is introduced. The invention has advantages of good catalyst stability, long life, etc.