GB923679A - Improvements relating to the separation of phenols from aqueous mixtures - Google Patents
Improvements relating to the separation of phenols from aqueous mixturesInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/72—Purification; 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.
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)
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)
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 |
-
1960
- 1960-06-18 DE DEK40964A patent/DE1135485B/en active Pending
-
1961
- 1961-06-16 GB GB2178861A patent/GB923679A/en not_active Expired
Cited By (1)
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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