The preparation technology of 2,3,3,3-tetrafluoeopropene (HFO-1234yf)

The preparation technology of 2,3,3,3-tetrafluoeopropene (HFO-1234yf)

  • CN 101,550,062 B
  • Filed: 04/03/2009
  • Issued: 09/02/2015
  • Est. Priority Date: 04/04/2008
  • Status: Active Grant
First Claim
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1. prepare the method for 2,3,3,3-tetrafluoeopropene for one kind, the method comprises:

  • a) at the temperature of 500 DEG C to 1000 DEG C, and trifluorochloroethylene and halomethane are reacted and forms intermediate product stream, wherein the mol ratio of trifluorochloroethylene and halomethane is 0.7 to 1.5;

    AndB) 225 DEG C to 575 DEG C temperature, in the presence of a fluorination catalyst, make this intermediate product stream and hydrogen fluoride reaction, produce thus and comprise the gains of 2,3,3,3-tetrafluoeopropene, the hydrogen fluoride/1 mole trifluorochloroethylene of at least 1 mole is wherein provided.

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