The method of preparation 2,3,3,3-tetrafluoeopropene

The method of preparation 2,3,3,3-tetrafluoeopropene

  • CN 102,164,882 B
  • Filed: 08/20/2009
  • Issued: 11/25/2015
  • Est. Priority Date: 08/22/2008
  • Status: Active Grant
First Claim
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1. prepare the method for 2,3,3,3-tetrafluoeopropene for one kind, said method comprising the steps of:

  • 1,1,1,2,3-pentafluoropropane is supplied to carry out dehydrofluorination in containing the reactor of catalyzer;

    Reaction product is distilled, thus described reaction product is separated into containing 2,3,3,3-tetrafluoeopropene as the first logistics of main ingredient with containing the second logistics as main ingredient of 1,3,3,3-tetrafluoeopropene and 1,1,3,3,3-pentafluoropropane;

    And1,3,3, the 3-tetrafluoeopropene obtained from described second logistics and 1,1,3,3,3-pentafluoropropane and 1,1,1,2,3-pentafluoropropane are supplied to carry out dehydrofluorination and isomerization reaction simultaneously in described reactor together,The chromium oxide catalyst that the catalyzer being wherein placed in described reactor is chromium oxide catalyst or fluoridizes.

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