JPS5490134A - Preparation of terephthalic acid - Google Patents

Preparation of terephthalic acid

Info

Publication number
JPS5490134A
JPS5490134A JP15557977A JP15557977A JPS5490134A JP S5490134 A JPS5490134 A JP S5490134A JP 15557977 A JP15557977 A JP 15557977A JP 15557977 A JP15557977 A JP 15557977A JP S5490134 A JPS5490134 A JP S5490134A
Authority
JP
Japan
Prior art keywords
oxidation
catalyst
bromine
terephthalic acid
component
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
Application number
JP15557977A
Other languages
Japanese (ja)
Other versions
JPS5933579B2 (en
Inventor
Teruo Ito
Tatsuki Nagaoka
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP52155579A priority Critical patent/JPS5933579B2/en
Publication of JPS5490134A publication Critical patent/JPS5490134A/en
Publication of JPS5933579B2 publication Critical patent/JPS5933579B2/en
Expired 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

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

Abstract

PURPOSE: To prepare a high purity terephthalic acid, and to reduce the loss of bromine catalyst, by the liquid-phase oxidation of p-xylene or its oxidation intermediate, in the presence of a Co-Mn-Br catalyst wherein the bromine component is a lower aliphatic carboxylic acid bromoalkyl ester.
CONSTITUTION: Terephthalic acid is prepared by the liquid phase oxidation of p-xylene or its oxidation intermediate with gas containing molecular oxygen, in acetic acid solvent, in the presenece of an oxidation catalyst comprising Co, Mn and Br, wherein the Br component is a lower aliphatic carboxylic acid bromoalkyl ester, e.g. dibromoethyl acetate, dibromopropyl acetate, etc.
EFFECT: The addition of bromine component during the recycling of the reaction mother liquor can be reduced, since the oxidation loss of the bromine component of this invention is low.
COPYRIGHT: (C)1979,JPO&Japio
JP52155579A 1977-12-26 1977-12-26 Method for producing terephthalic acid Expired JPS5933579B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52155579A JPS5933579B2 (en) 1977-12-26 1977-12-26 Method for producing terephthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52155579A JPS5933579B2 (en) 1977-12-26 1977-12-26 Method for producing terephthalic acid

Publications (2)

Publication Number Publication Date
JPS5490134A true JPS5490134A (en) 1979-07-17
JPS5933579B2 JPS5933579B2 (en) 1984-08-16

Family

ID=15609121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52155579A Expired JPS5933579B2 (en) 1977-12-26 1977-12-26 Method for producing terephthalic acid

Country Status (1)

Country Link
JP (1) JPS5933579B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60251494A (en) * 1984-05-28 1985-12-12 松下冷機株式会社 Controller with voice announcer for vending machine

Also Published As

Publication number Publication date
JPS5933579B2 (en) 1984-08-16

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