Method for producing e-1,3,3,3-tetrafluoropropene (hfc-1234ze) by dehydrofluorination

摘要

To provide a more selective and effective manufacturing method of HFC-1234ze.SOLUTION: A method that is a manufacturing method of fluoropropane of a formula CF3CH=CHF, in which a mixture of 1,1,1,3,3-pentafluoropropane and Z-1,3,3,3-tetrafluoropropene is, under the presence of an oxygen-containing gas, brought into contact with, in a gas phase, at least one catalyst selected from the group consisting of fluorinated Cr2O3 or Cr/Ni on fluorinated alumina to form a mixture containing Z-1,3,3,3-tetrafluoropropane, E-1,3,3,3-tetrafluoropropene, hydrogen fluoride, and, optionally unreacted 1,1,1,3,3-pentafluoropropane is formed, a Z isomer, and if present, E-1,3,3,3-tetrafluoropropene is separated from unreacted 1,1,1,3,3-pentafluoropropane, and the Z-1,3,3,3-pentafluoropropene is recovered is provided.SELECTED DRAWING: None