发明公开
- 专利标题： METHOD OF REDUCING CARBON DEPOSIT ON CATALYST IN UTILIZATION OF HFC-23 AS RESOURCE
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申请号： EP20899849.2申请日： 2020-02-24
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公开(公告)号： EP3904318A1公开(公告)日： 2021-11-03
- 发明人: ZHANG, Jianjun , HAN, Wenfeng , WANG, Shucheng , LIU, Wucan , ZHOU, Feixiang
- 申请人： Zhejiang Research Institute of Chemical Industry Co., Ltd. , Zhejiang Lantian Environmental Protection Hi-Tech Co., Ltd. , Sinochem Lantian Co., Ltd.
- 申请人地址： CN Hangzhou, Zhejiang 310023 No. 926, Xixi Avenue Xihu; CN Hangzhou, Zhejiang 310018 No.27, No.5 Avenue Economic & Technological Development Area; CN Hangzhou, Zhejiang 310051 Sinochem Building No.96 Jiangnan Avenue Binjiang District
- 代理机构： Kransell & Wennborg KB
- 优先权： CN201911282758 20191213
- 国际公布： WO2021114480 20210617
- 主分类号： C07C17/20
- 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.
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