GB840880A - Improvements in or relating to the synthesis of acrylonitrile - Google Patents
Improvements in or relating to the synthesis of acrylonitrileInfo
- Publication number
- GB840880A GB840880A GB36038/58A GB3603858A GB840880A GB 840880 A GB840880 A GB 840880A GB 36038/58 A GB36038/58 A GB 36038/58A GB 3603858 A GB3603858 A GB 3603858A GB 840880 A GB840880 A GB 840880A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amide
- weight
- cuprous chloride
- solution
- acetylene
- 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
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/08—Preparation of carboxylic acid nitriles by addition of hydrogen cyanide or salts thereof to unsaturated compounds
- C07C253/12—Preparation of carboxylic acid nitriles by addition of hydrogen cyanide or salts thereof to unsaturated compounds to compounds containing carbon-to-carbon triple bonds
-
- 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
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acrylonitrile is prepared by passing hydrogen cyanide and acetylene into a substantially nonaqueous catalytic system maintained at a temperature between 70 DEG and 150 DEG C. comprising a solution of cuprous chloride in an organic nitrile solvent which is substantially stable under the reaction conditions, said solution also containing an amide serving to increase the catalytic activity of the cuprous chloride. The term "amide" is intended to include cyclic amides and hydantoins. The amide hydrohalides where these are formed may also be used. The nitrile solvent preferably dissolves at least 30% by weight of the solution of cuprous chloride, preferably 35-50% or more and an inorganic solubilizer such as ammonium or alkali metal halide should preferably not be required or used. Superatmospheric pressures may be used. The catalyst system preferably comprises at least 30% by weight of cuprous chloride, advantageously up to about 65%, 30-60% of organic nitrile solvent and 2-30% of amide promoter. Hydrogen chloride is preferably added to the catalyst, e.g. by including 1-20% by weight of HCl in the HCN feed; the concentration of HCl in the catalyst may be between 0.01 to 10% by weight. The nitriles and amides preferably boil above about 100 DEG C. Ratios of acetylene to HCN of 25:1 to 2:1 are mentioned.ALSO:A substantially non-aqueous catalyst system for the preparation of acrylonitrile from acetylene and hydrogen cyanide comprises a solution of cuprous chloride in an organic nitrile, said solution also containing an amide promoter. The term "amide" is intended to cover cyclic amides and hydantoins. Many nitriles and amides are specified. The amine hydrohalides may be used where they are formed. The system preferably comprises at least 30% by weight, advantageously up to about 65%, of cuprous chloride, 30-60% of organic nitrile and 2-30% of amide. Hydrogen chloride is preferably present, e.g. 0.01 to 10% by weight.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US840880XA | 1957-11-08 | 1957-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB840880A true GB840880A (en) | 1960-07-13 |
Family
ID=22182806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36038/58A Expired GB840880A (en) | 1957-11-08 | 1958-11-10 | Improvements in or relating to the synthesis of acrylonitrile |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB840880A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1211159B (en) * | 1960-12-09 | 1966-02-24 | Knapsack Ag | Process for the production of acrylic acid nitrile from acetylene and hydrocyanic acid |
| DE1212516B (en) * | 1960-08-02 | 1966-03-17 | Knapsack Ag | Process for the production of acrylic acid nitrile from acetylene and hydrocyanic acid |
-
1958
- 1958-11-10 GB GB36038/58A patent/GB840880A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1212516B (en) * | 1960-08-02 | 1966-03-17 | Knapsack Ag | Process for the production of acrylic acid nitrile from acetylene and hydrocyanic acid |
| DE1211159B (en) * | 1960-12-09 | 1966-02-24 | Knapsack Ag | Process for the production of acrylic acid nitrile from acetylene and hydrocyanic acid |
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