GB791792A - A dehydrochlorination process - Google Patents
A dehydrochlorination processInfo
- Publication number
- GB791792A GB791792A GB10421/56A GB1042156A GB791792A GB 791792 A GB791792 A GB 791792A GB 10421/56 A GB10421/56 A GB 10421/56A GB 1042156 A GB1042156 A GB 1042156A GB 791792 A GB791792 A GB 791792A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dichloroethane
- silica
- trichloroethane
- dehydrochlorination
- mixtures
- 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
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Vinyl chloride and vinylidene chloride and mixtures thereof are made by contacting 1 : 1-dichloroethane and 1 : 1 : -trichloroethane and mixtures thereof respectively at a temperature between 150 DEG C. and 500 DEG C. with a salt or oxide of a metal of groups I, II, IV, V, VI and VII of the periodic table. Suitably the catalyst is a metal halide such as zinc, magnesium, cadmium, copper or manganese chloride, supported on a carrier such as pumice, silica, silica gel, asbestos, charcoal, magnesia, silica-alumina, diatomaceous earths or preferably, activated alumina. Many other catalysts are specified. The reaction may be carried out as a batch operation or continuously, the preferred method being a continuous operation using the catalyst as a packed bed or, more suitably, in the fluidized condition. The preferred temperature range is from 250 DEG to 320 DEG C. The reaction conditions permit selective dehydrochlorination of 1 : 1-dichloroethane in the presence of 1 : 2-dichloroethane at 150 DEG to 320 DEG C., whereby vinyl chloride and 1 : 2-dichloroethane may be separately recovered from the reaction mixture. Examples describe the dehydrochlorination of 1 : 1-dichloroethane and 1 : 1 : 1-trichloroethane in the presence of a number of specified catalysts according to the invention.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US791792XA | 1955-04-05 | 1955-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB791792A true GB791792A (en) | 1958-03-12 |
Family
ID=22148923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10421/56A Expired GB791792A (en) | 1955-04-05 | 1956-04-05 | A dehydrochlorination process |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1075592B (en) |
GB (1) | GB791792A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4816609A (en) * | 1987-05-26 | 1989-03-28 | The Dow Chemical Company | Process and catalyst for the dehydrohalogenation of halogenated hydrocarbons |
US5246903A (en) * | 1987-05-26 | 1993-09-21 | The Dow Chemical Company | Process and catalyst for the dehydrohalogenation of halogenated hydrocarbons or alkylene halohydrins |
CN105461509A (en) * | 2015-12-01 | 2016-04-06 | 仇颖超 | Liquid-phase production method for difluorotrichloroethane |
CN110624382A (en) * | 2018-06-25 | 2019-12-31 | 沈阳三聚凯特催化剂有限公司 | High-temperature flue gas dechlorinating agent and preparation method thereof |
CN113880729A (en) * | 2021-10-29 | 2022-01-04 | 邯郸市瑞田农药有限公司 | Preparation method for synthesizing benzoyl cyanide by catalyst catalysis |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1256017B (en) * | 1963-05-13 | 1967-12-07 | Mac Valves Inc | Pressure medium operated control spool with pilot control |
GB2002357A (en) * | 1977-08-16 | 1979-02-21 | Bp Chem Int Ltd | Vinyl chloride monomer production |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE529604C (en) * | 1929-07-04 | 1931-07-15 | I G Farbenindustrie Akt Ges | Process for the preparation of asymmetric dichloroethylene |
FR1005607A (en) * | 1947-08-20 | 1952-04-15 | Saint Gobain | Process for manufacturing vinylidene and dichlorethylene chloride by cracking trichloroethane |
BE485894A (en) * | 1947-11-19 | |||
US2676997A (en) * | 1948-09-15 | 1954-04-27 | Dow Chemical Co | Dehydrochlorination of chloroethanes |
GB671947A (en) * | 1949-05-18 | 1952-05-14 | Reginald Thomas Foster | Improvements in or relating to the production of organic chlorine compounds |
US2681372A (en) * | 1951-01-16 | 1954-06-15 | Ethyl Corp | Manufacture of ethyl chloride and vinyl chloride |
-
0
- DE DENDAT1075592D patent/DE1075592B/en active Pending
-
1956
- 1956-04-05 GB GB10421/56A patent/GB791792A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4816609A (en) * | 1987-05-26 | 1989-03-28 | The Dow Chemical Company | Process and catalyst for the dehydrohalogenation of halogenated hydrocarbons |
US5246903A (en) * | 1987-05-26 | 1993-09-21 | The Dow Chemical Company | Process and catalyst for the dehydrohalogenation of halogenated hydrocarbons or alkylene halohydrins |
CN105461509A (en) * | 2015-12-01 | 2016-04-06 | 仇颖超 | Liquid-phase production method for difluorotrichloroethane |
CN110624382A (en) * | 2018-06-25 | 2019-12-31 | 沈阳三聚凯特催化剂有限公司 | High-temperature flue gas dechlorinating agent and preparation method thereof |
CN113880729A (en) * | 2021-10-29 | 2022-01-04 | 邯郸市瑞田农药有限公司 | Preparation method for synthesizing benzoyl cyanide by catalyst catalysis |
CN113880729B (en) * | 2021-10-29 | 2024-04-26 | 邯郸市瑞田农药有限公司 | Preparation method for synthesizing benzoyl cyanide by catalyst catalysis |
Also Published As
Publication number | Publication date |
---|---|
DE1075592B (en) | 1960-02-18 |
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