GB999881A - Process for the purification of monocarboxylic acids - Google Patents
Process for the purification of monocarboxylic acidsInfo
- Publication number
- GB999881A GB999881A GB3318062A GB3318062A GB999881A GB 999881 A GB999881 A GB 999881A GB 3318062 A GB3318062 A GB 3318062A GB 3318062 A GB3318062 A GB 3318062A GB 999881 A GB999881 A GB 999881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- water
- carbon monoxide
- crude
- monocarboxylic acids
- 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
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Monocarboxylic acids, obtained by the reaction of formic acid, or of carbon monoxide and water, either with alkanes in the presence of hydrogen acceptors or with alkenes, are purified by contacting with sulphuric acid of at least 90% by weight concentration, at preferably 10 DEG to 50 DEG C. and preferably in an amount between 0.1% and 10% by volume, and subsequently separating the sulphuric acid phase therefrom and optionally washing the raffinate with water or aqueous solutions of alkali or alkaline earth metal citrates, hydroxides, carbonates or bicarbonates. The carboxylic acid is preferably made in the presence of a catalyst of boron trifluoride and water and optionally also phosphoric acid. The thus purified product may then be distilled. In the example, wherein the synthesis of the crude acid from olefins, and carbon monoxide over a H3PO4, BF3, H2O catalyst mixture is described, the storage properties, colour and nickel content of refined and crude acids are compared. Specification 871,278 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL268809 | 1961-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB999881A true GB999881A (en) | 1965-07-28 |
Family
ID=19753261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3318062A Expired GB999881A (en) | 1961-08-31 | 1962-08-29 | Process for the purification of monocarboxylic acids |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE621893A (en) |
| GB (1) | GB999881A (en) |
-
1962
- 1962-08-29 GB GB3318062A patent/GB999881A/en not_active Expired
- 1962-08-29 BE BE621893A patent/BE621893A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE621893A (en) | 1963-02-28 |
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