GB1156421A - Oxidation of Alkyl Benzenes - Google Patents

Oxidation of Alkyl Benzenes

Info

Publication number
GB1156421A
GB1156421A GB462667D GB462667D GB1156421A GB 1156421 A GB1156421 A GB 1156421A GB 462667 D GB462667 D GB 462667D GB 462667 D GB462667 D GB 462667D GB 1156421 A GB1156421 A GB 1156421A
Authority
GB
United Kingdom
Prior art keywords
oxidation
alkyl benzenes
catalyst
diamhydride
pyromellitic
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
GB462667D
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.)
Princeton Chemical Research Inc
Original Assignee
Princeton Chemical Research Inc
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 Princeton Chemical Research Inc filed Critical Princeton Chemical Research Inc
Publication of GB1156421A publication Critical patent/GB1156421A/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
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/28—Molybdenum
    • 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

Abstract

1,156,421. Oxidation of alkyl benzenes. PRINCETON CHEMICAL RESEARCH Inc. 27 Jan., 1967 [27 April, 1966], No. 4266/67. Heading C2C. Alkyl benzenes are oxidized to carboxylic acids (or anhydrides thereof) in the presence of a catalyst comprising V and Mo, Cr, Ag, Ti, W or Sn in the form of a compound with oxygen the ratio V : other metal being 0À5 to 100 :1 and the surface area of the catalyst being less than 3m<SP>2</SP>/gm. Examples describe the oxidation of dimers to pyromellitic diamhydride at 475‹ C. by passage through a tubular reactor.
GB462667D 1966-04-27 1967-01-27 Oxidation of Alkyl Benzenes Expired GB1156421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54556166A 1966-04-27 1966-04-27

Publications (1)

Publication Number Publication Date
GB1156421A true GB1156421A (en) 1969-06-25

Family

ID=24176721

Family Applications (1)

Application Number Title Priority Date Filing Date
GB462667D Expired GB1156421A (en) 1966-04-27 1967-01-27 Oxidation of Alkyl Benzenes

Country Status (3)

Country Link
DE (1) DE1618775A1 (en)
GB (1) GB1156421A (en)
NL (1) NL6703237A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649677A1 (en) * 1993-10-22 1995-04-26 Nippon Shokubai Co., Ltd. Catalyst for production of pyromellitic anhydride and process for production of pyromellitic anhydride
EP0676400A2 (en) * 1994-04-05 1995-10-11 Nippon Shokubai Co., Ltd. Method for production of pyromellitic anhydride

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649677A1 (en) * 1993-10-22 1995-04-26 Nippon Shokubai Co., Ltd. Catalyst for production of pyromellitic anhydride and process for production of pyromellitic anhydride
AU676940B2 (en) * 1993-10-22 1997-03-27 Nippon Shokubai Co., Ltd. Catalyst for production of pyromellitic anhydride and methodfor production of pyromellitic anhydride
US5663114A (en) * 1993-10-22 1997-09-02 Nippon Shokubai Co., Ltd. Catalyst for production of pyromellitic anhydride and method for production of pyromellitic anhydride
EP0676400A2 (en) * 1994-04-05 1995-10-11 Nippon Shokubai Co., Ltd. Method for production of pyromellitic anhydride
EP0676400A3 (en) * 1994-04-05 1998-08-19 Nippon Shokubai Co., Ltd. Method for production of pyromellitic anhydride
CN1066707C (en) * 1994-04-05 2001-06-06 株式会社日本触媒 Method for production of pyromellitic anhydride

Also Published As

Publication number Publication date
DE1618775A1 (en) 1971-06-03
NL6703237A (en) 1967-10-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees