GB1005315A - Improved process for the oxidation of toluene and xylene - Google Patents
Improved process for the oxidation of toluene and xyleneInfo
- Publication number
- GB1005315A GB1005315A GB2362262A GB2362262A GB1005315A GB 1005315 A GB1005315 A GB 1005315A GB 2362262 A GB2362262 A GB 2362262A GB 2362262 A GB2362262 A GB 2362262A GB 1005315 A GB1005315 A GB 1005315A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cobalt
- oxygen
- oxidation
- toluene
- cobalt oxide
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
A process for the oxidation of the aliphatic side chains of toluene or xylene to the corresponding carboxylic acids with molecular oxygen or gases containing it, such as air, is carried out in the presence of a cobalt oxide catalyst insoluble in the hydrocarbon to be oxidized and remaining insoluble in the reaction mixture from the beginning to the end of the oxidation. The cobalt oxide is prepared by a dry method and is preferably subjected prior to use for the first time to a treatment with boiling water for a duration of 10-180 minutes. It contains an oxygen percentage higher than that corresponding to the formula CoO and preferably an oxygen content of 25-35%. The catalyst is preferably utilized together with an inert finely divided substance. In an example toluene is oxidized in an autoclave to benzoic acid by drawing air therethrough in the presence of cobalt oxide obtained by grinding cobalt carbonate to a fine powder and passing air at 600-700 DEG C. therethrough for about 2 1/2 hours and thereafter placing the powder in water and boiling for 1 hour and filtering. In another example, para-xylene is oxidized to a mixture of toluic and terephthalic acids. In a further example, the oxidation of toluene to benzoic acid is described in conjunction with a suitable apparatus.ALSO:A cobalt oxide of a higher oxygen content than cobalt monoxide is prepared by treating metallic cobalt, cobalt oxide or hydroxide or a salt of divalent cobalt with a volatile acid, e.g. cobalt, carbonate or nitrate, with oxygen or a gas containing molecular oxygen at 200-800 DEG C., the cobalt or cobalt compound being in the dry state and no liquid medium being present. Reference is made to cobalt oxides having oxygen contents of 25-35% by weight.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1167261 | 1961-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1005315A true GB1005315A (en) | 1965-09-22 |
Family
ID=11136793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2362262A Expired GB1005315A (en) | 1961-06-26 | 1962-06-19 | Improved process for the oxidation of toluene and xylene |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE619393R (en) |
| DE (1) | DE1468584A1 (en) |
| ES (1) | ES278860A1 (en) |
| GB (1) | GB1005315A (en) |
| NL (1) | NL280020A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4965406A (en) * | 1987-07-23 | 1990-10-23 | Gadot Petrochemical Industries, Inc. | Process for the manufacture of benzoic acid and salts thereof |
| US4990659A (en) * | 1987-07-23 | 1991-02-05 | Gadot Petrochemical Industries Ltd. | Process for the manufacture of derivatives of benzoic acid |
| CN110590559A (en) * | 2019-08-19 | 2019-12-20 | 浙江工业大学 | Method for selectively preparing benzoic acid and derivatives thereof by oxidizing toluene and derivatives thereof through ball milling method |
| CN112121845A (en) * | 2020-10-27 | 2020-12-25 | 广州大学 | cobalt/N-doped nanosheet graphite phase carbon nitride composite material and preparation method and application thereof |
-
0
- NL NL280020D patent/NL280020A/xx unknown
-
1962
- 1962-06-19 GB GB2362262A patent/GB1005315A/en not_active Expired
- 1962-06-26 BE BE619393A patent/BE619393R/en active
- 1962-06-26 DE DE19621468584 patent/DE1468584A1/en active Pending
- 1962-06-26 ES ES278860A patent/ES278860A1/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4965406A (en) * | 1987-07-23 | 1990-10-23 | Gadot Petrochemical Industries, Inc. | Process for the manufacture of benzoic acid and salts thereof |
| US4990659A (en) * | 1987-07-23 | 1991-02-05 | Gadot Petrochemical Industries Ltd. | Process for the manufacture of derivatives of benzoic acid |
| CN110590559A (en) * | 2019-08-19 | 2019-12-20 | 浙江工业大学 | Method for selectively preparing benzoic acid and derivatives thereof by oxidizing toluene and derivatives thereof through ball milling method |
| CN112121845A (en) * | 2020-10-27 | 2020-12-25 | 广州大学 | cobalt/N-doped nanosheet graphite phase carbon nitride composite material and preparation method and application thereof |
| CN112121845B (en) * | 2020-10-27 | 2023-04-21 | 广州大学 | cobalt/N doped nano-sheet graphite phase carbon nitride composite material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ES278860A1 (en) | 1963-01-16 |
| NL280020A (en) | |
| DE1468584A1 (en) | 1969-02-13 |
| BE619393R (en) | 1962-12-27 |
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