GB766732A - Process for purifying acrylic acid nitrile - Google Patents

Process for purifying acrylic acid nitrile

Info

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
Application number
GB31068/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Schweiz AG
Original Assignee
Ciba AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ciba AG filed Critical Ciba AG
Publication of GB766732A publication Critical patent/GB766732A/en
Expired legal-status Critical Current

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.
GB31068/54A 1953-11-03 1954-10-27 Process for purifying acrylic acid nitrile Expired GB766732A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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