GB921254A - Improvements in and relating to fluorination - Google Patents
Improvements in and relating to fluorinationInfo
- 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
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.
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)
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)
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 |
-
1961
- 1961-04-21 GB GB14406/61A patent/GB921254A/en not_active Expired
- 1961-05-02 DE DEU7985A patent/DE1175225B/en active Pending
Cited By (14)
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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