Process for isomerizing a (hydro)fluoropropene
AssigneeMexichem Amanco Holding S.A. de C.V.
InventorsAndrew Paul Sharratt, John Charles McCarthy
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Abstract
A process for isomerising a (hydrohalo)fiuoroalkene, the process comprising contacting the (hydrohalo)fluoroalkene with a catalyst comprising an unsupported Lewis acid, a chromia-containing catalyst containing at least one additional metal, an alumina, a supported liquid catalyst, and mixtures thereof.
Claims16
A process for isomerizing a (hydro)fluoropropene, the process comprising contacting the (hydro)fluoropropene with a zinc/chromia catalyst containing 0.1 to 20% by weight of zinc, wherein the (hydro)fluoropropene is selected from the monofluoropropene 1-fluoropropene (CH3CH═CHF), the difluoropropenes 1,2-difluoropropene (HFC═CFCH3) and 1,3- difloropropene(HFC═CHCF2H), the trifluoropropenes 1,2,3,-trifluoropropene(HFC═CFCH2F) and 1,3,3trifluoropropene (HFC═CHCF2H), the tetrafluoropropenes 1,3,3,3-tetrafluoropropene (HFC═CHCF3) and 1,2,3,3,tetrafloropropene(HFC═CFCF2H),and the pentafloropropene 1,2,3,3,3,-pentafloropropene (HFC═CFCF3).
A process for making a (hydro) fluoropropene composition comprising a level of a Z isomer of (hydro) fluoropropene enhanced beyond the level of the Z isomer when the (hydro) fluoropropene was formed, or beyond the kinetic equilibrium level of the Z isomer, comprising the step of using a zinc/chromia catalyst containing 0.1 to 20% by weight of zinc, wherein the (hydro)fluoropropene is selected from the monofluoropropene 1-fluoropropene (CH3CH═CHF), the difluoropropenes 1,2-difluoropropene (HFC═CFCH3) and 1,3-difluoropropene (HFC═CHCH2F), the trifluoropropenes 1,2,3trifluoropropene (HFC═CFCH2F) and 1,3,3-trifluoropropene (HFC═CHCF2H), the tetrafluoropropenes 1,3,3,3-tetrafluoropropene (HFC═CHCF3) and 1,2,3,3-tetrafluoropropene (HFC═CFCF2H), and the pentafluoropropene 1,2,3,3,3-pentafluoropropene (HFC═CFCF3).
Dependencies are inferred from the claim text.