DE1468824C3 - - Google Patents

Info

Publication number
DE1468824C3
DE1468824C3 DE19651468824 DE1468824A DE1468824C3 DE 1468824 C3 DE1468824 C3 DE 1468824C3 DE 19651468824 DE19651468824 DE 19651468824 DE 1468824 A DE1468824 A DE 1468824A DE 1468824 C3 DE1468824 C3 DE 1468824C3
Authority
DE
Germany
Prior art keywords
catalyst
niobium
vanadium
temperature
percent
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
DE19651468824
Other languages
German (de)
English (en)
Other versions
DE1468824B2 (de
DE1468824A1 (de
Inventor
Richard I. Princeton N.J. Bergmann (V.St.A.)
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 Princeton Nj (vsta)
Original Assignee
Princeton Chemical Research Inc Princeton Nj (vsta)
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 Princeton Nj (vsta) filed Critical Princeton Chemical Research Inc Princeton Nj (vsta)
Publication of DE1468824A1 publication Critical patent/DE1468824A1/de
Publication of DE1468824B2 publication Critical patent/DE1468824B2/de
Application granted granted Critical
Publication of DE1468824C3 publication Critical patent/DE1468824C3/de
Granted legal-status Critical Current

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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
DE19651468824 1964-07-28 1965-07-27 Verfahren zur Herstellung von aroma tischen Saureanhydnden durch Gasphasen Oxydation Granted DE1468824B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38580164A 1964-07-28 1964-07-28
US46861865A 1965-06-30 1965-06-30

Publications (3)

Publication Number Publication Date
DE1468824A1 DE1468824A1 (de) 1969-04-17
DE1468824B2 DE1468824B2 (de) 1973-09-13
DE1468824C3 true DE1468824C3 (US20110009641A1-20110113-C00256.png) 1974-04-11

Family

ID=27011150

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19651468824 Granted DE1468824B2 (de) 1964-07-28 1965-07-27 Verfahren zur Herstellung von aroma tischen Saureanhydnden durch Gasphasen Oxydation

Country Status (2)

Country Link
DE (1) DE1468824B2 (US20110009641A1-20110113-C00256.png)
GB (1) GB1101810A (US20110009641A1-20110113-C00256.png)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421301A1 (de) * 1984-06-08 1985-12-12 Hüls AG, 4370 Marl Verfahren zur herstellung von pyromellitsaeuredianhydrid
DE4305817A1 (de) * 1993-02-25 1994-09-01 Consortium Elektrochem Ind Verfahren zur Herstellung von Pyromellitsäuredianhydrid

Also Published As

Publication number Publication date
GB1101810A (en) 1968-01-31
DE1468824B2 (de) 1973-09-13
DE1468824A1 (de) 1969-04-17

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)