GB1370959A - Production of phthalic anhydride - Google Patents
Production of phthalic anhydrideInfo
- Publication number
- GB1370959A GB1370959A GB712872A GB712872A GB1370959A GB 1370959 A GB1370959 A GB 1370959A GB 712872 A GB712872 A GB 712872A GB 712872 A GB712872 A GB 712872A GB 1370959 A GB1370959 A GB 1370959A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phthalic anhydride
- feb
- tubes
- supported catalyst
- tubular reactor
- 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
- C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
- C07C51/313—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with molecular oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Furan Compounds (AREA)
- Catalysts (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Abstract
1370959 Phthalic anhydride BADISCHE ANILIN- & SODA-FABRIK AG 16 Feb 1972 [20 Feb 1971] 7128/72 Heading C2C Phthalic anhydride is obtained by oxidizing o-xylene or naphthalene with O 2 or a gas containing O 2 in the presence of a globular supported catalyst containing V 2 O 5 and TiO 2 in a tubular reactor wherein the tubes have a length of 4-5 metres and an internal width of 31À5- 40 mm., the globules of supported catalyst have a diameter of 7-9 mm. and the tubes are surrounded by a heat exchange medium which is cooled outside the tubular reactor and is introduced preferably in countercurrent to the starting materials, at 370-390‹ C., the gaseous starting mixture being precompressed to from 1 to 3 atmospheres gauge prior to the reaction. The example describes the oxidation of oxylene with air.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712108281 DE2108281A1 (en) | 1971-02-20 | 1971-02-20 | Process for the production of phthalic anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1370959A true GB1370959A (en) | 1974-10-16 |
Family
ID=5799419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB712872A Expired GB1370959A (en) | 1971-02-20 | 1972-02-16 | Production of phthalic anhydride |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT315157B (en) |
| BE (1) | BE779547A (en) |
| CA (1) | CA965795A (en) |
| DE (1) | DE2108281A1 (en) |
| FR (1) | FR2125590B1 (en) |
| GB (1) | GB1370959A (en) |
| IT (1) | IT951060B (en) |
| NL (1) | NL7202113A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603307B2 (en) * | 1978-11-29 | 1985-01-26 | 株式会社日本触媒 | Method for producing phthalic anhydride |
-
1971
- 1971-02-20 DE DE19712108281 patent/DE2108281A1/en active Pending
-
1972
- 1972-02-12 IT IT4828972A patent/IT951060B/en active
- 1972-02-16 GB GB712872A patent/GB1370959A/en not_active Expired
- 1972-02-17 NL NL7202113A patent/NL7202113A/xx unknown
- 1972-02-18 AT AT134872A patent/AT315157B/en not_active IP Right Cessation
- 1972-02-18 CA CA135,117A patent/CA965795A/en not_active Expired
- 1972-02-18 FR FR7205529A patent/FR2125590B1/fr not_active Expired
- 1972-02-18 BE BE779547A patent/BE779547A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT315157B (en) | 1974-05-10 |
| DE2108281A1 (en) | 1972-09-07 |
| CA965795A (en) | 1975-04-08 |
| NL7202113A (en) | 1972-08-22 |
| IT951060B (en) | 1973-06-30 |
| FR2125590B1 (en) | 1975-02-14 |
| BE779547A (en) | 1972-08-18 |
| FR2125590A1 (en) | 1972-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |