GB655424A - Process for the preparation of vinyl halides - Google Patents
Process for the preparation of vinyl halidesInfo
- Publication number
- GB655424A GB655424A GB17325/47A GB1732547A GB655424A GB 655424 A GB655424 A GB 655424A GB 17325/47 A GB17325/47 A GB 17325/47A GB 1732547 A GB1732547 A GB 1732547A GB 655424 A GB655424 A GB 655424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chloride
- catalyst
- halide
- mercuric
- cupric
- 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
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
-
- 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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Vinyl halides are produced by conducting acetylene and a hydrogen halide both in the gaseous phase at a temperature of 140 DEG to 200 DEG C. over a solid catalyst containing a mixture of a mercuric halide and a cupric halide, the quantity of the mercuric halide amounting to 1 to 50 parts by weight to 1000 parts by weight of the cupric halide. It is preferred to use the halides corresponding to the vinyl halides to be prepared, thus cupric chloride and mercuric chloride are preferred in the preparation of vinyl chloride. The reaction may be effected at normal, elevated or reduced pressure. The catalyst may be prepared (see Group III), by soaking a surface-active support such as active carbon, silica gel, pumice stone or coke, either in a solution which contains the two salts or successively in solutions of the mercury salt and of the copper salt and allowing the solvent to evaporate. In examples: (1) silica gel is soaked in an aqueous solution of cupric chloride and mercuric chloride acidified with hydrochloric acid. The liquid is sucked off and the catalyst dried. An equimolar molar mixture of acetylene and hydrogen chloride is passed over the catalyst at 140-160 DEG C. to yield vinyl chloride; (2) active carbon is soaked in an aqueous solution of mercuric chloride and after draining it is brought into aqueous cupric chloride solution and then drained and dried. Acetylene and hydrogen chloride are then conducted over the catalyst at 150 DEG C. to yield vinyl chloride; (3) acetylene and hydrogen bromide are passed at 200 DEG C. over a catalyst obtained as in (1) but using pumice instead of silica gel, vinyl bromide being obtained. Specifications 156,120, [Class 2 (iii)], 580,910 and 603,855 are referred to. The Specification as open to inspection under Sect. 91 defines the catalyst as a mixture of one or more copper salts with a small proportion of one or more mercury salts. This subject-matter does not appear in the Specification as accepted.ALSO:A catalyst for the production of vinyl halides from acetylene and a hydrogen halide (see Group IV (b)), comprises a solid mixture of a mercuric halide and a cupric halide, the quantity of the mercuric halide amounting to 1 to 50 parts by weight to 1000 parts by weight of the cupric halide. The catalyst may be prepared by soaking a surface active substance such as active carbon, silica gel, pumice stone or coke either in a solution which contains the two salts or successively in a solution of the mercury salts and in a solution of the copper salts and allowing the solvent to evaporate. The solvent may be water or a highly volatile organic solvent. In examples: (1) silica gel (or pumice), is soaked in an aqueous solution of cupric chloride and mercuric chloride acidified with hydrochloric acid, the liquid sucked off and the catalyst dried; (2) active carbon is soaked in an aqueous solution of mercuric chloride, after draining it is brought into an aqueous cupric chloride solution and is then drained and dried. Specifications 156,120, [Class 2 (iii)], 580,910 and 603,855, are referred to. The Specification as open to inspection under Sect. 91 defines the catalyst as a mixture of one or more copper salts with a small proportion of one or more mercury salts. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL263975X | 1946-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB655424A true GB655424A (en) | 1951-07-18 |
Family
ID=19781634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17325/47A Expired GB655424A (en) | 1946-07-09 | 1947-07-01 | Process for the preparation of vinyl halides |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE474187A (en) |
CH (1) | CH263975A (en) |
FR (1) | FR953794A (en) |
GB (1) | GB655424A (en) |
NL (1) | NL62541C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105330512A (en) * | 2015-12-04 | 2016-02-17 | 厦门中科易工化学科技有限公司 | Method for preparing chloroethylene from acetylene and hydrogen chloride in mercuration-free mode |
CN110756192A (en) * | 2018-07-27 | 2020-02-07 | 安徽华塑股份有限公司 | High-activity composite environment-friendly low-mercury catalyst and production process thereof |
-
0
- BE BE474187D patent/BE474187A/xx unknown
- NL NL62541D patent/NL62541C/xx active
-
1947
- 1947-07-01 GB GB17325/47A patent/GB655424A/en not_active Expired
- 1947-07-05 CH CH263975D patent/CH263975A/en unknown
- 1947-07-07 FR FR953794D patent/FR953794A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105330512A (en) * | 2015-12-04 | 2016-02-17 | 厦门中科易工化学科技有限公司 | Method for preparing chloroethylene from acetylene and hydrogen chloride in mercuration-free mode |
CN110756192A (en) * | 2018-07-27 | 2020-02-07 | 安徽华塑股份有限公司 | High-activity composite environment-friendly low-mercury catalyst and production process thereof |
Also Published As
Publication number | Publication date |
---|---|
NL62541C (en) | |
FR953794A (en) | 1949-12-13 |
BE474187A (en) | |
CH263975A (en) | 1949-09-30 |
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