GB921254A - Improvements in and relating to fluorination - Google Patents

Improvements in and relating to fluorination

Info

Publication number
GB921254A
GB921254A GB14406/61A GB1440661A GB921254A GB 921254 A GB921254 A GB 921254A GB 14406/61 A GB14406/61 A GB 14406/61A GB 1440661 A GB1440661 A GB 1440661A GB 921254 A GB921254 A GB 921254A
Authority
GB
United Kingdom
Prior art keywords
chromium oxide
vinyl chloride
difluoroethane
catalyst
ethylene dichloride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14406/61A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB921254A publication Critical patent/GB921254A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
    • C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
    • C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
    • C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
    • C07C17/21—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms with simultaneous increase of the number of halogen atoms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Vinyl fluoride and 1,1-difluoroethane are obtained by passing a mixture of ethylene dichloride or vinyl chloride or both and hydrogen fluoride over a chromium oxide catalyst at 200 DEG to 500 DEG C. From 2 to 20 moles of hydrogen fluoride may be used per mole of ethylene dichloride and/or vinyl chloride. Vinyl chloride and 1,1-difluoroethane may be separated from the reaction product and recycled. The catalyst may be granular or shaped hydrous chromium oxide, or co-precipitated chromium oxide and alumina, or chromium oxide on an alumina support. Examples are given.
GB14406/61A 1960-06-10 1961-04-21 Improvements in and relating to fluorination Expired GB921254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3514860A 1960-06-10 1960-06-10

Publications (1)

Publication Number Publication Date
GB921254A true GB921254A (en) 1963-03-20

Family

ID=21880950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14406/61A Expired GB921254A (en) 1960-06-10 1961-04-21 Improvements in and relating to fluorination

Country Status (2)

Country Link
DE (1) DE1175225B (en)
GB (1) GB921254A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235612A (en) * 1962-09-26 1966-02-15 Allied Chem Manufacture of fluorocarbons
US4110408A (en) * 1976-12-21 1978-08-29 Allied Chemical Corporation Preparation of 1-chloro-2-trifluoromethyl-3,3,3-trifluoropropene from isobutylene
EP0637579A1 (en) * 1993-08-04 1995-02-08 SOLVAY (Société Anonyme) Process for the preparation of 1-chloro-1 fluoroethane and/or 1,1-difluoroethane
WO1996041679A1 (en) * 1995-06-08 1996-12-27 E.I. Du Pont De Nemours And Company Treatment of chromium oxide and catalytic manufacture of vinyl fluoride
FR2783820A1 (en) * 1998-09-03 2000-03-31 Atochem Elf Sa Process for the manufacture of 1-chloro-2,2-difluoroethane by a liquid phase reaction of hydrogen fluoride with 1,1,2-trichloroethane in the presence of a Lewis acid
FR2783821A1 (en) * 1998-09-03 2000-03-31 Atochem Elf Sa Process for the manufacture of vinylidine fluoride and 1,2-difluroethylene by the pyrolysis of 1-chloro-2,2-difluoroethane in a reactor of which the metallic walls function as a catalyst
US6809226B1 (en) 1993-08-04 2004-10-26 Solvay (Societe Anonyme) Process for the preparation of 1-chloro-1-fluoroethane and/or 1,1-difluoroethane
EP3176147B1 (en) 2006-08-24 2022-03-09 Honeywell International Inc. Process for the producton of hfo trans-1234ze from hfc-245fa
WO2022157491A1 (en) 2021-01-22 2022-07-28 Mexichem Fluor S.A. De C.V. Process for the production of 1,1-difluoroethane

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE859887C (en) * 1941-11-23 1952-12-18 Basf Ag Process for the production of vinyl fluoride
US2889379A (en) * 1957-02-06 1959-06-02 Dow Chemical Co Preparation of 3, 3, 3-trifluoropropene
US2892000A (en) * 1957-02-15 1959-06-23 Du Pont Manufacture of vinyl fluoride and 1, 1-difluoroethane

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235612A (en) * 1962-09-26 1966-02-15 Allied Chem Manufacture of fluorocarbons
US4110408A (en) * 1976-12-21 1978-08-29 Allied Chemical Corporation Preparation of 1-chloro-2-trifluoromethyl-3,3,3-trifluoropropene from isobutylene
US4110406A (en) * 1976-12-21 1978-08-29 Allied Chemical Corporation Preparation of 1-chloro-2-trifluoromethyl-3,3,3-trifluoropropene from isobutylene
US6809226B1 (en) 1993-08-04 2004-10-26 Solvay (Societe Anonyme) Process for the preparation of 1-chloro-1-fluoroethane and/or 1,1-difluoroethane
EP0637579A1 (en) * 1993-08-04 1995-02-08 SOLVAY (Société Anonyme) Process for the preparation of 1-chloro-1 fluoroethane and/or 1,1-difluoroethane
BE1007393A3 (en) * 1993-08-04 1995-06-06 Solvay PROCESS FOR THE PREPARATION OF 1-CHLORO-1-fluoroethane and / or 1.1-difluoroethane.
US7009083B2 (en) 1993-08-04 2006-03-07 Solvay (Societe Anonyme) Process for the preparation of 1-chloro-1-fluoroethane and/or 1,1-difluoroethane
US6034289A (en) * 1995-06-08 2000-03-07 E. I. Du Pont De Nemours And Company Treatment of chromium oxide and catalytic manufacture of vinyl fluoride
US6359183B1 (en) 1995-06-08 2002-03-19 E. I. Du Pont De Nemours And Company Treatment of chromium oxide and catalytic manufacture of vinyl fluoride
WO1996041679A1 (en) * 1995-06-08 1996-12-27 E.I. Du Pont De Nemours And Company Treatment of chromium oxide and catalytic manufacture of vinyl fluoride
FR2783821A1 (en) * 1998-09-03 2000-03-31 Atochem Elf Sa Process for the manufacture of vinylidine fluoride and 1,2-difluroethylene by the pyrolysis of 1-chloro-2,2-difluoroethane in a reactor of which the metallic walls function as a catalyst
FR2783820A1 (en) * 1998-09-03 2000-03-31 Atochem Elf Sa Process for the manufacture of 1-chloro-2,2-difluoroethane by a liquid phase reaction of hydrogen fluoride with 1,1,2-trichloroethane in the presence of a Lewis acid
EP3176147B1 (en) 2006-08-24 2022-03-09 Honeywell International Inc. Process for the producton of hfo trans-1234ze from hfc-245fa
WO2022157491A1 (en) 2021-01-22 2022-07-28 Mexichem Fluor S.A. De C.V. Process for the production of 1,1-difluoroethane

Also Published As

Publication number Publication date
DE1175225B (en) 1964-08-06

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