GB701097A - An improved process for the purification of naphthalene - Google Patents
An improved process for the purification of naphthaleneInfo
- Publication number
- GB701097A GB701097A GB903450A GB903450A GB701097A GB 701097 A GB701097 A GB 701097A GB 903450 A GB903450 A GB 903450A GB 903450 A GB903450 A GB 903450A GB 701097 A GB701097 A GB 701097A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthalene
- isobutene
- crude
- acid
- tertiary butyl
- 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
- C07C7/14875—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with organic compounds
- C07C7/14883—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with organic compounds hydrocarbons
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 is purified by a process which comprises treating at elevated temperature the crude liquid naphthalene with a small proportion of isobutene gas, tertiary butyl alcohol or di-isobutene in the presence of an acid catalyst whereby the isobutene, tertiary butyl alcohol or di-isobutene combines with the impurities without reacting with the naphthalene and separating the unchanged naphthalene from the products of the reaction. Acid catalysts mentioned are phosphoric acid and concentrated sulphuric. The naphthalene may be finally washed with water and dilute caustic soda solution. In examples: A C4 refinery gas containing isobutene is passed through crude, heated, liquid naphthalene in the presence of concentrated sulphuric acid (I) and (III) and a mixture of crude naphthalene, tertiary butyl alcohol and sulphuric acid is heated under reflux (II). The naphthalene is recovered by sublimation in each example and in example (I) the product is compared with the products obtained by purifying crude naphthalene by sublimation and washing with concentrated sulphuric acid, water and caustic soda.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB903450A GB701097A (en) | 1950-04-12 | 1950-04-12 | An improved process for the purification of naphthalene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB903450A GB701097A (en) | 1950-04-12 | 1950-04-12 | An improved process for the purification of naphthalene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB701097A true GB701097A (en) | 1953-12-16 |
Family
ID=9864120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB903450A Expired GB701097A (en) | 1950-04-12 | 1950-04-12 | An improved process for the purification of naphthalene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB701097A (en) |
-
1950
- 1950-04-12 GB GB903450A patent/GB701097A/en not_active Expired
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