Method for producing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf)
AssigneeHoneywell International Inc.
InventorsDaniel C. Merkel, Hsueh S. Tung
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Abstract
The present invention relates to an improved method for manufacturing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) by reacting 1,1,2,3-tetrachloropropene, 1,1,1,2,3-pentachloropropane, and/or 2,3,3,3-tetrachloropropene with hydrogen fluoride, in a vapor phase reaction vessel in the presence of a vapor phase fluorination catalyst and stabilizer. HCFC-1233xf is an intermediate in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf) which is a refrigerant with low global warming potential.
Claims28
A method of preparing fluorinated organic compounds comprising contacting at least one chlorocarbon selected from the group consisting of tetrachloropropene and pentachloropropane with a halogenating agent in the presence of at least one catalyst and at least one stabilizer under conditions effective to produce a C3 haloolefin
- wherein the at least one stabilizer is selected from the group consisting of an amine stabilizer, a hydroquinone stabilizer, methoxy-hydroquinone, triethylamine, di-isopropyl amine, butylated hydroxy anisole (BHA), thymol and combinations thereof.
A method of preparing fluorinated organic compounds comprising contacting at least one chlorocarbon selected from the group consisting of tetrachloropropene and pentachloropropane with a halogenating agent in the presence of at least one catalyst and at least one stabilizer under conditions effective to produce a C3 haloolefin wherein the at least one catalyst is selected from the group consisting of Cr2O3, FeCl3/C, Cr2O3/Al2O3, Cr2O3/AlF3, Cr2O3/carbon, CoCl2/Cr2O3/Al2O3, NiCl2/Cr2O3/Al2O3, CoCl2/AlF3, NiCl2/AlF3 and combinations thereof.
A method of preparing fluorinated organic compounds comprising contacting at least one chlorocarbon selected from the group consisting of tetrachloropropene and pentachloropropane with a halogenating agent in the presence of at least one catalyst and at least one stabilizer under conditions effective to produce a C3 haloolefin wherein the at least one stabilizer is selected from the group consisting of an amine stabilizer, a hydroquinone stabilizer, methoxy-hydroquinone, triethylamine, di-isopropyl amine, butylated hydroxy anisole (BHA), thymol and combinations thereof, and wherein the at least one catalyst is selected from the group consisting of Cr2O3, FeCl3/C, Cr2O3/Al2O3, Cr2O3/AlF3, Cr2O3/carbon, CoCl2/Cr2O3/Al2O3, NiCl2/Cr2O3/Al2O3, CoCl2/AlF3, NiCl2/AlF3 and combinations thereof.
Dependencies are inferred from the claim text.