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

摘要

Problem to be solved: to provide a more selective and effective manufacturing method for hfc-1234ze.A method for producing a fluoropropene of formula cf3ch = CHF1133 - pentafluoropropane and Z-1333 - mixtures with tetrafluoropropeneIn the presence of oxygenated gasesCatalytic contact with a catalyst containing at least one catalyst selected from the group consisting of Cr / Ni on the fluorinated Cr2O3 or fluoride aluminaZ-1333 - tetrafluoropropaneE-1333TetrafluoropropeneHydrogen fluorideAnd optionally unreacted1133 - forming a mixture containing pentafluoropropane andZ isomerAndIfUnreacted1133 - E-1 from pentafluoropropane333 - separating tetrafluoropropene andZ-1333 - recovering tetrafluoropropene andIncludingIs provided.No selection