GB923679A - Improvements relating to the separation of phenols from aqueous mixtures - Google Patents

Improvements relating to the separation of phenols from aqueous mixtures

Info

Publication number
GB923679A
GB923679A GB2178861A GB2178861A GB923679A GB 923679 A GB923679 A GB 923679A GB 2178861 A GB2178861 A GB 2178861A GB 2178861 A GB2178861 A GB 2178861A GB 923679 A GB923679 A GB 923679A
Authority
GB
United Kingdom
Prior art keywords
extraction solvent
phenols
separation
aqueous
benzophenone
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
GB2178861A
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.)
Heinrich Koppers GmbH
Original Assignee
Heinrich Koppers GmbH
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 Heinrich Koppers GmbH filed Critical Heinrich Koppers GmbH
Publication of GB923679A publication Critical patent/GB923679A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68Purification; separation; Use of additives, e.g. for stabilisation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/72Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for the separation of phenols from aqueous mixtures containing them, e.g. aqueous crude carbolic acid, comprises extracting with a phenol-dissolving extraction solvent containing organic compounds having a benzoyl group, e.g. acetophenone, or a derivative thereof, benzophenone, benzaldehyde, the esters of benzoic acid and similar high-boiling compounds with a benzoyl group. Preferably the extraction solvent also contains another phenol-dissolving extraction solvent such as benzene, and isopropyl ether. When the extraction solvent contains benzophenone the extraction is carried out at a temperature above about 48 DEG C. when the stable modification is used and above about 26 DEG C. when the meta stable modification is used. The extracted phenols may be recovered by distillation of the extraction solvent preferably under reduced pressure or by treating with an alkaline liquid then separating the aqueous solution of phenolates and recovering the phenols from the latter in known manner.
GB2178861A 1960-06-18 1961-06-16 Improvements relating to the separation of phenols from aqueous mixtures Expired GB923679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK40964A DE1135485B (en) 1960-06-18 1960-06-18 Process for the production of phenols from aqueous mixtures containing phenols

Publications (1)

Publication Number Publication Date
GB923679A true GB923679A (en) 1963-04-18

Family

ID=7222248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2178861A Expired GB923679A (en) 1960-06-18 1961-06-16 Improvements relating to the separation of phenols from aqueous mixtures

Country Status (2)

Country Link
DE (1) DE1135485B (en)
GB (1) GB923679A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420643A (en) * 1982-09-30 1983-12-13 American Cyanamid Company Extraction of phenols from aqueous solutions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE732563C (en) * 1937-08-10 1943-03-05 Metallgesellschaft Ag Process for the separation of phenols, organic bases and the like Like. From industrial waste water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420643A (en) * 1982-09-30 1983-12-13 American Cyanamid Company Extraction of phenols from aqueous solutions

Also Published As

Publication number Publication date
DE1135485B (en) 1962-08-30

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