GB1063152A - Catalytic process for the manufacture of phthalic anyhdride - Google Patents
Catalytic process for the manufacture of phthalic anyhdrideInfo
- Publication number
- GB1063152A GB1063152A GB837265A GB837265A GB1063152A GB 1063152 A GB1063152 A GB 1063152A GB 837265 A GB837265 A GB 837265A GB 837265 A GB837265 A GB 837265A GB 1063152 A GB1063152 A GB 1063152A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- oxide
- teo2
- admixture
- xylene
- 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
- C07C51/16—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
- C07C51/215—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of saturated hydrocarbyl groups
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/057—Selenium or tellurium; Compounds thereof
- B01J27/0576—Tellurium; Compounds thereof
-
- 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)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Phthalic anhydride is obtained by interacting o-xylene with oxygen in the vapour phase at an elevated temperature in the presence of a catalyst comprising an oxide of Te in admixture or combination with an oxide of V. The source of o-xylene may also contain one or more other alkylbenzenes. A gaseous diluent, e g N2, may be present in the reaction mixture. The preferred reaction temperature is in the range 250 DEG to 550 DEG C. Examples are given for the production of phthalic anhydride showing the effect of the catalyst on the yield. Maleic anhydride is also obtained as by-product in some of the Examples.ALSO:An oxidation catalyst comprises an oxide of Te in admixture or combination with an oxide of V. It may be prepared either by mixing aqueous solutions or suspensions of oxides, acids or salts of Te and V, and calcining the residue obtained by evaporation of the aqueous solution; or by thoroughly mixing the component oxides, acids or salts in the dry state before calcination. Tellurium is preferably introduced as TeO2 or as a compound giving rise to TeO2 during the preparation of the catalyst. The catalyst may be used in finely divided form or as granules or pellets. The catalyst may be deposited on a support material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB837265A GB1063152A (en) | 1965-02-26 | 1965-02-26 | Catalytic process for the manufacture of phthalic anyhdride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB837265A GB1063152A (en) | 1965-02-26 | 1965-02-26 | Catalytic process for the manufacture of phthalic anyhdride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1063152A true GB1063152A (en) | 1967-03-30 |
Family
ID=9851272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB837265A Expired GB1063152A (en) | 1965-02-26 | 1965-02-26 | Catalytic process for the manufacture of phthalic anyhdride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1063152A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6984289B2 (en) * | 2001-07-05 | 2006-01-10 | Mg Technologies Ag | Process of generating o-xylene-air mixtures for the production of phthalic anhydride |
-
1965
- 1965-02-26 GB GB837265A patent/GB1063152A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6984289B2 (en) * | 2001-07-05 | 2006-01-10 | Mg Technologies Ag | Process of generating o-xylene-air mixtures for the production of phthalic anhydride |
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