GB766732A - Process for purifying acrylic acid nitrile - Google Patents
Process for purifying acrylic acid nitrileInfo
- Publication number
- GB766732A GB766732A GB31068/54A GB3106854A GB766732A GB 766732 A GB766732 A GB 766732A GB 31068/54 A GB31068/54 A GB 31068/54A GB 3106854 A GB3106854 A GB 3106854A GB 766732 A GB766732 A GB 766732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aqueous solution
- acetylene
- active
- acrylonitrile
- agent
- 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
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
- C07C253/34—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
An aqueous solution of acrylonitrile containing divinylacetylene and, if desired, other byproducts from the synthesis of acrylonitrile, is freed from the divinyl-acetylene by bringing it into contact with a solid surface-active adsorption agent, the divinyl-acetylene being selectively adsorbed. The aqueous solution may be that obtained by the absorbtion in water of the reaction gases from the synthesis of acrylonitrile from acetylene and hydrocyanic acid in the presence of a cuprous salt catalyst, which have been separated from said catalyst. It is stated that inorganic or organic substances may be used as adsorbtion agents, surface active earths, aluminium oxide, active carbons and artificial resins being specifically mentioned. The process may be carried out by suspending the adsorption agent in the aqueous solution and, after shaking or stirring, filtering off the agent, but advantageously the aqueous solution is caused to flow through a column charged with the adsorption agent, which may be regenerated by heat or treatment with steam. Examples in which active carbon and aluminium oxide are used as adsorption agents illustrate each of the above methods. Specification 727,898 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH766732X | 1953-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB766732A true GB766732A (en) | 1957-01-23 |
Family
ID=4535096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31068/54A Expired GB766732A (en) | 1953-11-03 | 1954-10-27 | Process for purifying acrylic acid nitrile |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB766732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1011839B1 (en) * | 1997-07-24 | 2005-04-06 | Rhodia Chimie | Method for adsorbing organophosphorus compounds contained in a liquid |
-
1954
- 1954-10-27 GB GB31068/54A patent/GB766732A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1011839B1 (en) * | 1997-07-24 | 2005-04-06 | Rhodia Chimie | Method for adsorbing organophosphorus compounds contained in a liquid |
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