JPS57185238A - Preparation of p-nitrobenzoic acid - Google Patents

Preparation of p-nitrobenzoic acid

Info

Publication number
JPS57185238A
JPS57185238A JP56067644A JP6764481A JPS57185238A JP S57185238 A JPS57185238 A JP S57185238A JP 56067644 A JP56067644 A JP 56067644A JP 6764481 A JP6764481 A JP 6764481A JP S57185238 A JPS57185238 A JP S57185238A
Authority
JP
Japan
Prior art keywords
nitrotoluene
give
acetic acid
nitrobenzoic acid
solution
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.)
Pending
Application number
JP56067644A
Other languages
Japanese (ja)
Inventor
Hajime Torigata
Kenji Nakaoka
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.)
Toray Industries Inc
Original Assignee
Toray Industries 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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP56067644A priority Critical patent/JPS57185238A/en
Publication of JPS57185238A publication Critical patent/JPS57185238A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To obtain the titled compound, by reacting p-nitrotoluene with O2 gas in the presence of a specific amount of acetic acid and a Co-Mn-Br catalyst at a relatively low temperature to give a specified conversion, concentrating the reaction product solution, and circulating the concentrated solution through the reaction system.
CONSTITUTION: p-Nitrotoluene is oxidized with O2 gas to give p-nitrobenzoic acid. In the process, a catalyst containing Co, Mn and Br essentially is used, and the reaction is carried out at 120W190°C, preferably 140W180°C, in the presence of acetic acid in an amount of 0.2W1.3wt%, preferably 0.3W0.8wt%, based on the raw material to give a conversion of the p-nitrotoluene in the range of 10W70%. The resultant reaction product solution is then concentrated before or after the separation of the formed p-nitrobenzoic acid to distill off a mixture of the formed water with the acetic acid, and the remaining solution is circulated through the reaction system.
EFFECT: Economical with good yield.
USE: A raw material for agricultural chemicals, medicines, dyes, resins, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP56067644A 1981-05-07 1981-05-07 Preparation of p-nitrobenzoic acid Pending JPS57185238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56067644A JPS57185238A (en) 1981-05-07 1981-05-07 Preparation of p-nitrobenzoic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56067644A JPS57185238A (en) 1981-05-07 1981-05-07 Preparation of p-nitrobenzoic acid

Publications (1)

Publication Number Publication Date
JPS57185238A true JPS57185238A (en) 1982-11-15

Family

ID=13350920

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56067644A Pending JPS57185238A (en) 1981-05-07 1981-05-07 Preparation of p-nitrobenzoic acid

Country Status (1)

Country Link
JP (1) JPS57185238A (en)

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