GB1081287A - Process for the oxidation of 1,2,4,5-tetraalkyl benzenes - Google Patents

Process for the oxidation of 1,2,4,5-tetraalkyl benzenes

Info

Publication number
GB1081287A
GB1081287A GB46405/64A GB4640564A GB1081287A GB 1081287 A GB1081287 A GB 1081287A GB 46405/64 A GB46405/64 A GB 46405/64A GB 4640564 A GB4640564 A GB 4640564A GB 1081287 A GB1081287 A GB 1081287A
Authority
GB
United Kingdom
Prior art keywords
parts
oxidation
tetraalkylbenzenes
oxide
tetraalkyl
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
Application number
GB46405/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gelsenberg Benzin AG
Original Assignee
Gelsenberg Benzin AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gelsenberg Benzin AG filed Critical Gelsenberg Benzin AG
Publication of GB1081287A publication Critical patent/GB1081287A/en
Expired legal-status Critical Current

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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20—Vanadium, niobium or tantalum
    • B01J23/22—Vanadium
    • 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)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Furan Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Pyromellitic dianhydride is made by gas phase oxidation of 1,2,4,5-tetraalkylbenzenes in presence of a catalyst containing V2O5 and at least one oxide of Ti, W or Sn.ALSO:Catalysts for oxidising tetraalkylbenzenes comprise V2O5 and an oxide of Ti, W or Sn. Exemplified catalysts consist of 100 parts SiC, as carrier, with a mixture of 9 parts V2O5 and 3 parts TiO2, WO3 or SnO2. Other specified carriers are pumice, quartz and Al2O3.
GB46405/64A 1963-11-14 1964-11-13 Process for the oxidation of 1,2,4,5-tetraalkyl benzenes Expired GB1081287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG39168A DE1246707B (en) 1963-11-14 1963-11-14 Process for the catalytic gas phase oxidation of 1, 2, 4, 5-substituted dimethyldiisopropyl and trimethylisopropylbenzenes and durol

Publications (1)

Publication Number Publication Date
GB1081287A true GB1081287A (en) 1967-08-31

Family

ID=7126078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46405/64A Expired GB1081287A (en) 1963-11-14 1964-11-13 Process for the oxidation of 1,2,4,5-tetraalkyl benzenes

Country Status (8)

Country Link
JP (1) JPS499451B1 (en)
AT (1) AT250937B (en)
BE (1) BE655686A (en)
CH (1) CH438259A (en)
DE (1) DE1246707B (en)
FR (1) FR1415112A (en)
GB (1) GB1081287A (en)
NL (1) NL6413133A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5592177A (en) * 1978-12-30 1980-07-12 Matsushita Electric Works Ltd Instrument for generating circular motion
AU676940B2 (en) * 1993-10-22 1997-03-27 Nippon Shokubai Co., Ltd. Catalyst for production of pyromellitic anhydride and methodfor production of pyromellitic anhydride
JP2003055382A (en) 2001-08-08 2003-02-26 Nippon Shokubai Co Ltd Method for producing pyromellitic anhydride

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625555A (en) * 1947-10-08 1953-01-13 California Research Corp Production of aryl tetracarboxylic acid anhydrides
US2576625A (en) * 1947-10-08 1951-11-27 California Research Corp Production of polycarboxylic acid products

Also Published As

Publication number Publication date
DE1246707B (en) 1967-08-10
AT250937B (en) 1966-12-12
CH438259A (en) 1967-06-30
FR1415112A (en) 1965-10-22
JPS499451B1 (en) 1974-03-05
BE655686A (en) 1965-03-01
NL6413133A (en) 1965-05-17

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