Catalytic regeneration with elemental halogen

Catalytic regeneration with elemental halogen

  • CN 1,592,656 B
  • Filed: 12/13/2002
  • Issued: 07/11/2012
  • Est. Priority Date: 12/21/2001
  • Status: Active Grant
First Claim
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1. the liquid phase process for preparing partially halogenated fluorinated organic compound through chloro-fluorine displacement reaction, bromo-fluorine displacement reaction or hydrogen fluoride addition reaction;

  • It is carrying out under hydrofluoric situation of use with in the presence of the catalyst;

    Said catalyst is regenerated with simple substance chlorine;

    Wherein so carry out regenerative response,, wherein the partial reaction mixture is shifted out from the reactor transfer even simple substance chlorine does not contact with have undesirable reactive raw material or intermediate product for chlorine;

    Shifting the part of coming out mixes with chlorine;

    To carry out the regeneration of catalyst, will have the part of coming out then and turn back in the reactor through the transfer of catalyst of regeneration, wherein relate to following preparation method;

    It is used for bromo-fluorine displacement reaction or chloro-fluorine displacement reaction, in the presence of the Antimony pentachloride and/or have and carry out under its fluorinated product or its HF-adduct and Sb (III) compound is regenerated.

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