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GB945017A - Fluorination of halopropanes - Google Patents

Fluorination of halopropanes

Info

Publication number
GB945017A
GB945017A GB4061861A GB4061861A GB945017A GB 945017 A GB945017 A GB 945017A GB 4061861 A GB4061861 A GB 4061861A GB 4061861 A GB4061861 A GB 4061861A GB 945017 A GB945017 A GB 945017A
Authority
GB
United Kingdom
Prior art keywords
chlorine
fluorine
ccl3
prepared
chromium oxide
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
GB4061861A
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 GB945017A publication Critical patent/GB945017A/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/26—Chromium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/07—Preparation of halogenated hydrocarbons by addition of hydrogen halides
    • C07C17/08—Preparation of halogenated hydrocarbons by addition of hydrogen halides to unsaturated hydrocarbons

Landscapes

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

Abstract

Compounds of the formula: <FORM:0945017/C2/1> where each Y1 and Y2 is fluorine or chlorine, at least one being fluorine, and when both Y2's are chlorine at least one Y1 is chlorine, are prepared by contacting a compound: <FORM:0945017/C2/2> where each Y1 and Y2 is fluorine or chlorine and at least one is chlorine, with 1-12 moles of HF per mole of reactant at 200-500 DEG C. in the presence of a chromium oxide catalyst. The preferred starting material is CCl3.CF2.CCl3 and/or partially fluorinated derivatives thereof, which yield a mixture containing CF3CF2CF2Cl, CF2ClCF2CF2Cl, CF2ClCF2CFCl2, CFCl2CF2 CFCl2, and CFCl2CF2CCl3; any of these may be obtained as main product by suitable adjustment of reaction conditions, and less fluorinated products may be recycled. The preferred catalysts are those described in Specification 943,627. 2,2-Difluoropropane is prepared by reacting propyne with HF over a chromium oxide catalyst at 75-400 DEG C., and is chlorinated under u.v. irradiation to produce 1, 1, 1, 3, 3, 3-hexachlorodifluoropropane
GB4061861A 1960-07-06 1961-11-14 Fluorination of halopropanes Expired GB945017A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4104960A 1960-07-06 1960-07-06
US7014460A 1960-11-18 1960-11-18

Publications (1)

Publication Number Publication Date
GB945017A true GB945017A (en) 1963-12-18

Family

ID=26717743

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1467161A Expired GB943627A (en) 1960-07-06 1961-04-24 Improvements in and relating to the use of chromia/alumina in fluorination catalysts
GB4061861A Expired GB945017A (en) 1960-07-06 1961-11-14 Fluorination of halopropanes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1467161A Expired GB943627A (en) 1960-07-06 1961-04-24 Improvements in and relating to the use of chromia/alumina in fluorination catalysts

Country Status (2)

Country Link
DE (2) DE1443187A1 (en)
GB (2) GB943627A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008754A3 (en) * 1989-02-02 1990-09-20 Asahi Glass Co Ltd Process for producing a 2,2-difluoropropane
US5264639A (en) * 1989-02-02 1993-11-23 Asahi Glass Company Ltd. Process for producing a 2,2-difluoropropane

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501056A1 (en) * 1980-12-29 1982-09-10 Ugine Kuhlmann GAS-PHASE FLUORINATION CATALYSTS OF ALIPHATIC CHLORINATED CHLOROFLUORIN HYDROCARBONS BASED ON CHROMIUM AND ALUMINUM PHOSPHATE SALTS OR OXIDES AND FLUORURIZATION METHODS USING SAID CATALYSTS
FR2501064A1 (en) * 1980-12-29 1982-09-10 Ugine Kuhlmann GAS-PHASE FLUORURIZATION CATALYSTS OF ALIPHATIC CHLORINATED HYDROCARBONS AND HYDROCARBONS BASED ON ACTIVE-CHARCOAL CHROMIUM OXIDE AND FLUORURIZATION METHODS USING THE SAME CATALYSTS
DE69415748T2 (en) * 1993-09-07 1999-08-19 Showa Denko K.K. Chromium-based fluorination catalyst, process for producing this catalyst and fluorination process using this catalyst

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008754A3 (en) * 1989-02-02 1990-09-20 Asahi Glass Co Ltd Process for producing a 2,2-difluoropropane
US5264639A (en) * 1989-02-02 1993-11-23 Asahi Glass Company Ltd. Process for producing a 2,2-difluoropropane

Also Published As

Publication number Publication date
DE1443197A1 (en) 1968-12-12
GB943627A (en) 1963-12-04
DE1443187A1 (en) 1968-11-28

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