GB1062555A - Purification of aliphatic carboxylic acids - Google Patents
Purification of aliphatic carboxylic acidsInfo
- Publication number
- GB1062555A GB1062555A GB1482664A GB1482664A GB1062555A GB 1062555 A GB1062555 A GB 1062555A GB 1482664 A GB1482664 A GB 1482664A GB 1482664 A GB1482664 A GB 1482664A GB 1062555 A GB1062555 A GB 1062555A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acids
- fraction
- aqueous
- carboxylic acids
- product
- 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
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 title 1
- 238000000746 purification Methods 0.000 title 1
- -1 aliphatic mono-carboxylic acids Chemical class 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 3
- 230000003647 oxidation Effects 0.000 abstract 3
- 238000007254 oxidation reaction Methods 0.000 abstract 3
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 abstract 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 150000007513 acids Chemical class 0.000 abstract 2
- 239000012223 aqueous fraction Substances 0.000 abstract 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract 2
- 125000004432 carbon atom Chemical group C* 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000011260 aqueous acid Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- DQYBDCGIPTYXML-UHFFFAOYSA-N ethoxyethane;hydrate Chemical compound O.CCOCC DQYBDCGIPTYXML-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for the recovery of substantially anhydrous lower aliphatic mono-carboxylic acids from the product of reaction of non-aromatic hydrocarbons of 4 to 8 carbon atoms with oxygen, comprises removing low and high boiling products from the crude oxidation product to leave an aqueous fraction containing C1- 3 aliphatic monocarboxylic acids together with corrosive products, subjecting this aqueous fraction to extraction with di-iso propyl ether to give an extract substantially free from corrosive products, and thereafter distilling the extract to remove the water and isopropyl ether as an overhead fraction and recovering a mixture comprising substantially anhydrous C1- 3 aliphatic monocarboxylic acids as a base product. While the process of the invention can be applied to lower aliphatic mono carboxylic acids produced by the liquid or gas phase oxidation of any feedstock comprising non-aromatic hydrocarbons of 4 to 8 carbon atoms, the acids obtained from the liquid phase air oxidation of paraffins such as naphtha are especially suitable. The crude aqueous acid fraction preferably contains from 20% to 50% by weight of water before it is extracted. The mixed acids may also contain butyric acid. The overhead fraction from the distillation stage can be combined with the aqueous residue from the extraction stage and fractionally distilled to recover the ether for recycling. The process is illustrated by reference to a flow sheet (not shown).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DENDAT1252651D DE1252651B (en) | 1964-04-09 | Process for dewatering mixtures of low molecular weight saturated fatty acids | |
| GB1482664A GB1062555A (en) | 1964-04-09 | 1964-04-09 | Purification of aliphatic carboxylic acids |
| JP2034965A JPS5021446B1 (en) | 1964-04-09 | 1965-04-08 | |
| FR12669A FR1431404A (en) | 1964-04-09 | 1965-04-09 | Purification of aliphatic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1482664A GB1062555A (en) | 1964-04-09 | 1964-04-09 | Purification of aliphatic carboxylic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1062555A true GB1062555A (en) | 1967-03-22 |
Family
ID=10048161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1482664A Expired GB1062555A (en) | 1964-04-09 | 1964-04-09 | Purification of aliphatic carboxylic acids |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5021446B1 (en) |
| DE (1) | DE1252651B (en) |
| GB (1) | GB1062555A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1198446B2 (en) † | 1999-07-22 | 2006-08-30 | Consortium für elektrochemische Industrie GmbH | Method for separating and purifying an aqueous mixture that mainly consists of acetic acid and formic acid |
-
0
- DE DENDAT1252651D patent/DE1252651B/en active Pending
-
1964
- 1964-04-09 GB GB1482664A patent/GB1062555A/en not_active Expired
-
1965
- 1965-04-08 JP JP2034965A patent/JPS5021446B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1198446B2 (en) † | 1999-07-22 | 2006-08-30 | Consortium für elektrochemische Industrie GmbH | Method for separating and purifying an aqueous mixture that mainly consists of acetic acid and formic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5021446B1 (en) | 1975-07-23 |
| DE1252651B (en) | 1967-10-26 |
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