Method for the preparation of 1,1,1,3,3-pentafluoropropene and 1,1,1,3,3-pentafluoropropane
AssigneePCBU Services, Inc.
InventorsJohn Cheng-Ping Qian, Julia Ann Sacarias
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Abstract
A method for the production of 1,1,1,3,3-pentafluoropropene, and particularly to a method characterized by high conversion, yield and selectivity by contacting 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane with hydrogen in the presence of a metal-containing catalyst. The 1,1,1,3,3-pentafluoropropene then can be reacted with hydrogen in the presence of a metal-containing catalyst to produce 1,1,1,3,3-pentafluoropropane.
Claims27
A method for the production of 1,1,1,3,3-pentafluoropropene which comprises contacting 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane with hydrogen in the presence of a metal-containing catalyst carried by a carbon support, at a temperature in the range of about 350° C. to about 800° C., and recovering the 1,1,1,3,3-pentafluoropropene from the resulting reaction product, wherein the metal-containing catalyst carried by a carbon support is selected from the group consisting of a metal, metal halide, metal oxide, metal oxyhalide and combinations thereof, wherein the metal of the catalyst is selected from the group consisting of Fe, Cu, Ni and Cr.
A method for the production of 1,1,1,3,3-pentafluoropropane comprising (1) contacting 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane with hydrogen in the presence of a metal-containing catalyst carried by a carbon support, at a temperature in the range of about 350° C. to about 800°C., and recovering 1,1,1,3,3-pentafluoropropene from the resulting reaction product, wherein the metal-containing catalyst carried by a carbon support is selected from the group consisting of a metal, metal halide, metal oxide, metal oxyhalide and combinations thereof, wherein the metal of the catalyst is selected from the group consisting of Fe, Cu, Ni and Cr, and (2) contacting the recovered 1,1,1,3,3-pentafluoropropene with hydrogen in the presence of a metal-containing catalyst to produce 1,1,1,3,3-pentafluoropropane.
A method for the production of 1,1,1,3,3-pentafluoropropene, with a selectivity of at least 80%, which comprises contacting 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane with hydrogen in the presence of a metal-containing catalyst carried by a carbon support, at a temperature in the range of about 350° C. to about 800° C., and recovering the 1,1,1,3,3-pentafluoropropene from the resulting reaction product, wherein the metal-containing catalyst carried by a carbon support is selected from the group consisting of a metal, metal halide, metal oxide, metal oxyhalide and combinations thereof, wherein the metal of the catalyst is selected from the group consisting of Cu, Ni.
A method for the production of 1,1,1,3,3-pentafluoropropane, with a selectivity of at least 75.52%, comprising (1) contacting 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane with hydrogen in the presence of a metal-containing catalyst carried by a carbon support, at a temperature in the range of about 350° C. to about 800° C., and recovering 1,1,1,3,3-pentafluoropropene from the resulting reaction product, wherein the metal-containing catalyst carried by a carbon support is selected from the group consisting of a metal, metal halide, metal oxide, metal oxyhalide and combinations thereof, wherein the metal of the catalyst is selected from the group consisting of Fe, Cu, Ni and Cr, and (2) contacting the recovered 1,1,1,3,3-pentafluoropropene with hydrogen in the presence of a metal-containing catalyst to produce 1,1,1,3,3-pentafluoropropane.
Dependencies are inferred from the claim text.