FR2359809A1 - IMPROVEMENTS TO THE METHODS FOR THE PREPARATION OF ISOPHTHALIC ACID OR TEREPHTHALIC ACID BY CATALYTIC OXIDATION OF META- OR PARA-XYLENE - Google Patents
IMPROVEMENTS TO THE METHODS FOR THE PREPARATION OF ISOPHTHALIC ACID OR TEREPHTHALIC ACID BY CATALYTIC OXIDATION OF META- OR PARA-XYLENEInfo
- Publication number
- FR2359809A1 FR2359809A1 FR7722785A FR7722785A FR2359809A1 FR 2359809 A1 FR2359809 A1 FR 2359809A1 FR 7722785 A FR7722785 A FR 7722785A FR 7722785 A FR7722785 A FR 7722785A FR 2359809 A1 FR2359809 A1 FR 2359809A1
- Authority
- FR
- France
- Prior art keywords
- para
- meta
- xylene
- preparation
- acid
- 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.)
- Granted
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
- C07C51/255—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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Préparation d'acide isophtalique ou d'acide téréphtalique par l'oxydation, respectivement, de méta- ou de para-xylène avec de l'oxygène moléculaire, à des températures élevées et dans des conditions en phase liquide en présence de catalyseurs constitués par une combinaison d'au moins un catalyseur d'oxydation à base de métal de transition (Mn, Co, Ce) et en présence d'une source de brome. Conformément à l'invention, on utilise un système solvant liquide comprenant essentiellement de l'acide benzoïque et de l'eau en une proportion en poids maintenue entre 3 % et environ 15 %. Possibilité de maîtriser industriellement la valeur de la température d'oxydation et d'en limiter efficacement les fluctuations tout en obtenant un produit très peu coloré, d'un haut degré de pureté, rapidement et à un taux de conversion élevé.Preparation of isophthalic acid or terephthalic acid by the oxidation, respectively, of meta- or para-xylene with molecular oxygen, at elevated temperatures and under liquid phase conditions in the presence of catalysts consisting of a combination of at least one oxidation catalyst based on a transition metal (Mn, Co, Ce) and in the presence of a source of bromine. According to the invention, a liquid solvent system is used comprising essentially benzoic acid and water in a proportion by weight maintained between 3% and approximately 15%. Possibility of industrially controlling the value of the oxidation temperature and effectively limiting its fluctuations while obtaining a very little colored product, with a high degree of purity, quickly and at a high conversion rate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70835876A | 1976-07-26 | 1976-07-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2359809A1 true FR2359809A1 (en) | 1978-02-24 |
| FR2359809B1 FR2359809B1 (en) | 1980-07-11 |
Family
ID=24845486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7722785A Granted FR2359809A1 (en) | 1976-07-26 | 1977-07-25 | IMPROVEMENTS TO THE METHODS FOR THE PREPARATION OF ISOPHTHALIC ACID OR TEREPHTHALIC ACID BY CATALYTIC OXIDATION OF META- OR PARA-XYLENE |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPS5315334A (en) |
| AR (1) | AR211428Q (en) |
| AU (1) | AU510097B2 (en) |
| BE (1) | BE857068A (en) |
| BR (1) | BR7704878A (en) |
| CA (1) | CA1079296A (en) |
| CS (1) | CS197297B2 (en) |
| DD (1) | DD132428A5 (en) |
| DE (1) | DE2732149A1 (en) |
| DK (1) | DK334777A (en) |
| ES (1) | ES461021A1 (en) |
| FR (1) | FR2359809A1 (en) |
| GB (1) | GB1577544A (en) |
| IE (1) | IE45504B1 (en) |
| IT (1) | IT1079740B (en) |
| LU (1) | LU77836A1 (en) |
| MX (1) | MX145448A (en) |
| NL (1) | NL7707202A (en) |
| PL (1) | PL199858A1 (en) |
| SU (1) | SU793378A3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2893860B2 (en) * | 1990-05-17 | 1999-05-24 | 三菱瓦斯化学株式会社 | Production method of high purity isophthalic acid |
| GB9210832D0 (en) * | 1992-05-21 | 1992-07-08 | Ici Plc | Bromine catalysed oxidation process |
| DE59310066D1 (en) * | 1992-11-04 | 2000-08-03 | Clariant Gmbh | Process for the preparation of fluorinated benziles |
| ES2104512B1 (en) * | 1995-09-21 | 1998-07-01 | Interquisa | INDUSTRIAL PROCEDURE FOR THE MANUFACTURE OF AROMATIC CARBOXYL ACIDS. |
| PL389529A1 (en) | 2009-11-10 | 2011-05-23 | Fabryka Maszyn FAMUR Spółka Akcyjna | Method for mounting the arm to the body of longwall coal miner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6413067A (en) * | 1963-11-14 | 1965-05-17 |
-
1977
- 1977-06-27 AU AU26500/77A patent/AU510097B2/en not_active Expired
- 1977-06-29 NL NL7707202A patent/NL7707202A/en not_active Application Discontinuation
- 1977-06-30 MX MX169677A patent/MX145448A/en unknown
- 1977-07-04 IT IT50113/77A patent/IT1079740B/en active
- 1977-07-15 CA CA282,898A patent/CA1079296A/en not_active Expired
- 1977-07-15 DE DE19772732149 patent/DE2732149A1/en not_active Ceased
- 1977-07-19 GB GB30269/77A patent/GB1577544A/en not_active Expired
- 1977-07-22 BE BE179575A patent/BE857068A/en not_active IP Right Cessation
- 1977-07-25 BR BR7704878A patent/BR7704878A/en unknown
- 1977-07-25 IE IE1543/77A patent/IE45504B1/en unknown
- 1977-07-25 LU LU77836A patent/LU77836A1/xx unknown
- 1977-07-25 DK DK334777A patent/DK334777A/en not_active Application Discontinuation
- 1977-07-25 DD DD7700200266A patent/DD132428A5/en unknown
- 1977-07-25 FR FR7722785A patent/FR2359809A1/en active Granted
- 1977-07-25 AR AR268551A patent/AR211428Q/en unknown
- 1977-07-26 PL PL19985877A patent/PL199858A1/en unknown
- 1977-07-26 SU SU772505759A patent/SU793378A3/en active
- 1977-07-26 ES ES461021A patent/ES461021A1/en not_active Expired
- 1977-07-26 JP JP8887877A patent/JPS5315334A/en active Pending
- 1977-07-26 CS CS774957A patent/CS197297B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IE45504L (en) | 1978-01-26 |
| SU793378A3 (en) | 1980-12-30 |
| GB1577544A (en) | 1980-10-22 |
| JPS5315334A (en) | 1978-02-13 |
| LU77836A1 (en) | 1978-02-02 |
| CS197297B2 (en) | 1980-04-30 |
| MX145448A (en) | 1982-02-17 |
| AU510097B2 (en) | 1980-06-05 |
| BR7704878A (en) | 1979-07-03 |
| PL199858A1 (en) | 1979-01-02 |
| BE857068A (en) | 1978-01-23 |
| ES461021A1 (en) | 1978-05-16 |
| DK334777A (en) | 1978-01-27 |
| AR211428Q (en) | 1977-12-15 |
| NL7707202A (en) | 1978-01-30 |
| AU2650077A (en) | 1979-01-04 |
| IT1079740B (en) | 1985-05-13 |
| CA1079296A (en) | 1980-06-10 |
| IE45504B1 (en) | 1982-09-08 |
| DE2732149A1 (en) | 1978-02-02 |
| DD132428A5 (en) | 1978-09-27 |
| FR2359809B1 (en) | 1980-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |