Dehydrofluorination of 245FA to 1234ZE

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United States of America

PATENT NO RE49896
SERIAL NO

17546174

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Abstract

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A method of producing a id='REI-00001' date='20240402' fluoropropaneid='REI-00001' id='REI-00002' date='20240402' fluoropropene id='REI-00002' of formula CF3CH═CHF, comprising contacting a mixture of 1,1,1,3,3-pentafluoropropane and Z-1,3,3,3-tetrafluoropropene in the gas phase with a catalyst comprising at least one catalyst selected from the group consisting of fluorinated Cr2O3 or Cr/Ni on fluoride alumina, in the presence of an oxygen containing gas, to form a mixture comprising id='REI-00003' date='20240402' Z-1,3,3,3-tetrafluoropropaneid='REI-00003' id='REI-00004' date='20240402' Z-1,3,3,3-tetrafluoropropeneid='REI-00004' , E-1,3,3,3,-tetrafluoropropene, hydrogen fluoride, and optionally unreacted 1,1,1,3,3-pentafluoropropane, separating the E-1,3,3,3-tetrafluoropropene from the Z-isomer and any unreacted 1,1,1,3,3-pentafluoropropane, if present, and recovering said E-1,3,3,3-tetrafluoropropene.

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Patent Owner(s)

Patent OwnerAddress
THE CHEMOURS COMPANY FC LLCWILMINGTON DE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nappa, Mario Joseph Leesburg, US 242 2557
Peng, Sheng Hockessin, US 142 542

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