GB777532A - Process for the removal of oxidizable impurities from naphthalene - Google Patents
Process for the removal of oxidizable impurities from naphthaleneInfo
- Publication number
- GB777532A GB777532A GB19943/55A GB1994355A GB777532A GB 777532 A GB777532 A GB 777532A GB 19943/55 A GB19943/55 A GB 19943/55A GB 1994355 A GB1994355 A GB 1994355A GB 777532 A GB777532 A GB 777532A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthalene
- water
- peracid
- solvent
- reaction
- 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
- C07C7/00—Purification; Separation; Use of additives
- C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
- C07C7/17—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with acids or sulfur oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Crude naphthalene containing oxidizable impurities, especially thionaphthene, is purified by reacting with an aliphatic peracid containing 1, 3 or 4 carbon atoms and recovering naphthalene from the resulting reaction product. Acids referred to are performic, perpropionic and perbutyric acids. The reaction may be carried out at 25-85 DEG C. The naphthalene may be dissolved in a solvent, e.g. benzene or may be suspended in water. A solution of the peracid in a solvent such as acetone may be used, or the peracid may be formed in situ by adding the acid and an aqueous solution of hydrogen peroxide, preferably in the presence of a catalyst such as sulphuric acid, to the naphthalene. After the completion of the reaction, water-soluble components may be removed by extraction with water or aqueous sodium hydroxide and pure naphthalene distilled off from the sulphur-containing residue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19943/55A GB777532A (en) | 1955-07-11 | 1955-07-11 | Process for the removal of oxidizable impurities from naphthalene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19943/55A GB777532A (en) | 1955-07-11 | 1955-07-11 | Process for the removal of oxidizable impurities from naphthalene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB777532A true GB777532A (en) | 1957-06-26 |
Family
ID=22139858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19943/55A Expired GB777532A (en) | 1955-07-11 | 1955-07-11 | Process for the removal of oxidizable impurities from naphthalene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB777532A (en) |
-
1955
- 1955-07-11 GB GB19943/55A patent/GB777532A/en not_active Expired
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