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Systems and methods for producing fluorocarbons

a technology of fluorocarbons and production methods, applied in the field of fluorocarbon production, can solve the problem that known methods do not readily translate into predictable applications for other compounds

Inactive Publication Date: 2005-02-17
GREAT LAKES CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art demonstrates that known methods do not readily translate into predictable applications for other compounds

Method used

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  • Systems and methods for producing fluorocarbons
  • Systems and methods for producing fluorocarbons

Examples

Experimental program
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Effect test

example 1

Potassium Catalysts

[0047]

TABLE 1CatalystCat.Temp.Contact TimeH2 / CFC-217% SelectivityPrecursorPrep.(° C.)(sec)Mole Ratio% ConversionHFPHFC-227Total10% KClA20011.56.419.346.437.283.610% KClA25018.73.945.652.019.871.910% KClA30014.5363.913.757.170.8

[0048]

TABLE 2CatalystCat.Temp.Contact TimeH2 / CFC-217% SelectivityPrecursorPrep.(° C.)(sec)Mole Ratio% ConversionHFPHFC-227Total10% KFA30010.64.16.96.265.972.110% KFA2509.74.47.228.166.674.710% KFA3009.67.114.049.327.576.810% KFA3503.45.259.629.531.761.110% KFA4007.95.638.724.720.455.0

example 2

Zirconium Catalysts

[0049]

TABLE 3CatalystCat.Temp.Contact TimeH2 / CFC-217% SelectivityPrecursorPrep.(° C.)(sec)Mole Ratio% ConversionHFPHFC-227Total10% ZrCl2A20011.54.125.3138.056.194.110% ZrCl2A25010.38.266.1846.136.182.310% ZrCl2A3009.56.836.4338.936.675.510% ZrCl2A3508.87.393.6318.747.466.1

[0050]

TABLE 4CatalystCat.Temp.Contact TimeH2 / CFC-217% SelectivityPrecursorPrep.(° C.)(sec)Mole Ratio% ConversionHFPHFC-227Total10% ZrCl4B20012.312.722.9527.821.048.810% ZrCl4B25011.315.441.4246.025.371.310% ZrCl4B30010.522.676.9629.935.565.510% ZrCl4B3509.211.495.1918.544.262.7

[0051]

TABLE 5CatalystCat.Temp.Contact TimeH2 / CFC-217% SelectivityPrecursorPrep.(° C.)(sec)Mole Ratio% ConversionHFPHFC-227Total10% CuZrCl2B20012.211.818.2430.661.391.910% CuZrCl2B25011.111.640.4159.828.788.510% CuZrCl2B3009.211.240.4749.335.684.910% CuZrCl2B3509.413.337.646.636.983.510% CuZrCl2B4007.611.831.2428.052.880.910% CuZrCl2B5007.614.731.844.032.036.1

example 3

Tungsten Catalysts

[0052]

TABLE 6CatalystCat.Temp.Contact TimeH2 / CFC-217% SelectivityPrecursorPrep.(° C.)(sec)Mole Ratio% ConversionHFPHFC-227Total10% NaWA20012.110.323.144.540.384.710% NaWA2501111.549.9856.025.881.810% NaWA3001010.195.1940.227.087.210% NaWA3509.19.794.9830.528.358.8

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Abstract

Systems and methods for producing fluorocarbons are provided that include contacting a saturated halogenated fluorocarbon with hydrogen and catalyst to produce a saturated hydrofluorocarbon and an unsaturated fluorocarbon. Aspects of the present invention describe systems and methods for contacting saturated halogenated fluorocarbons such as CF3CClFCF3 and / or CF3CCl2CF3 with hydrogen and catalyst. Systems and methods of the present invention also describe contacting saturated halogenated fluorocarbons with catalysts having one or more of K, Zr, Na, Ni, Cu, Ni, Zn, Fe, Mn, Co, Ti, and Pd. Aspects of the present invention also describe contacting saturated halogenated fluorocarbons with hydrogen under pressure. Saturated hydroflourocarbons and unsaturated fluorocarbons produced in accordance with the systems and methods of the present invention can include one or more of CF3CFHCF3, CF3CH2CF3, CF3CHClCF3, CF3CF═CF2, CF3CH═CF2, and CF3CCl═CF2.

Description

TECHNICAL FIELD [0001] The present invention relates to the production of fluorocarbons. Aspects of the present invention relate to the production of saturated and unsaturated fluorocarbons. BACKGROUND OF THE INVENTION [0002] Hydrofluorocarbons and fluoromonomers such as 1,1,1,2,3,3,3-heptafluoropropane (CF3CHFCF3, HFC-227ea) and hexafluoropropene (CF3CF═CF2, FC-1216, HFP) are commercially desired. [0003] HFP is widely employed as a monomer for the production of fluorine-containing polymers, for example, the thermoplastic FEP (“fluorinated-ethylene-propylene”) resins, formed via the copolymerization of tetrafluoroethylene and hexafluoropropene (see for example, Fluorine Chemistry: A Comprehensive Treatment, M. Howe-Grant, ed., Wiley & Sons, New York, N.Y., 1995, page 404). [0004] HFC-227ea has found use as a blowing agent (U.S. Pat. No. 5,314,926; U.S. Pat. No. 5,278,196), refrigerant (Chen, J., Sci. Tech. Froid (1994), (2 CFCS, the Day After), 133-145), and propellant for use in me...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B01J23/89B01J27/08B01J27/128B01J27/13B01J35/00C07C17/23C07C17/354
CPCB01J23/8926B01J27/08B01J27/128B01J27/13B01J35/0006C07C17/23C07C17/354C07C19/08C07C21/18C07C19/10B01J35/19Y02P20/52
Inventor HEDRICK, VICKI E.BOGGS, JANET K.BRANDSTADTER, STEPHAN M.COHN, MITCHEL
Owner GREAT LAKES CHEM CORP
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