JPS5452049A - Preparation of high quality terephthalic acid - Google Patents

Preparation of high quality terephthalic acid

Info

Publication number
JPS5452049A
JPS5452049A JP11663177A JP11663177A JPS5452049A JP S5452049 A JPS5452049 A JP S5452049A JP 11663177 A JP11663177 A JP 11663177A JP 11663177 A JP11663177 A JP 11663177A JP S5452049 A JPS5452049 A JP S5452049A
Authority
JP
Japan
Prior art keywords
solvent
ppm
compound
terephthalic acid
acetic acid
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
JP11663177A
Other languages
Japanese (ja)
Other versions
JPS6113457B2 (en
Inventor
Hiroshi Morimoto
Yasoji Toda
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 JP11663177A priority Critical patent/JPS5452049A/en
Publication of JPS5452049A publication Critical patent/JPS5452049A/en
Publication of JPS6113457B2 publication Critical patent/JPS6113457B2/ja
Granted 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 terephthalic acid for direct polymerizaton, by the liquid phase oxidaton of p-xylene in an acetic acid solvent containing specific concentration of water, in the presence o specific amounts of Co, Mn, and a Br compound, thereby suppressing the decomposition of the acetic acid solvent.
CONSTITUTION: Terephthalic acid is prepared by the oxidation of p-xylene with oxygen-containing gas in an acetic acid solvent, in the presence of a catalyst comprising heavy metal compounds and a bromine compound, under the following conditions: The concentration of water in the solvent at the oxidaton reaction zone is maintained between 14 and 16wt%; a Co compound and a Mn compound are used as the heavy metal compounds; the amount of Co is ≥ 200 wt ppm of the solvent; the ratio of Mn to Co is 0.2-300 to 100; the sum of Co and Mn is ≤ 2000 ppm of the solvent; and when the sum of Co and Mn is ≥ 850 ppm, the reaction temp. is 185-210°C; and when it is < 850 ppm, the temperature is kept between 180 and 200°C
COPYRIGHT: (C)1979,JPO&Japio
JP11663177A 1977-09-30 1977-09-30 Preparation of high quality terephthalic acid Granted JPS5452049A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11663177A JPS5452049A (en) 1977-09-30 1977-09-30 Preparation of high quality terephthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11663177A JPS5452049A (en) 1977-09-30 1977-09-30 Preparation of high quality terephthalic acid

Publications (2)

Publication Number Publication Date
JPS5452049A true JPS5452049A (en) 1979-04-24
JPS6113457B2 JPS6113457B2 (en) 1986-04-14

Family

ID=14691969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11663177A Granted JPS5452049A (en) 1977-09-30 1977-09-30 Preparation of high quality terephthalic acid

Country Status (1)

Country Link
JP (1) JPS5452049A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852243A (en) * 1981-09-24 1983-03-28 Mitsubishi Gas Chem Co Inc Preparation of terephthalic acid
WO2008105087A1 (en) * 2007-02-28 2008-09-04 Hitachi Plant Technologies, Ltd. Process for producing crude aromatic dicarboxylic acid to be fed to hydrogenation purification

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852243A (en) * 1981-09-24 1983-03-28 Mitsubishi Gas Chem Co Inc Preparation of terephthalic acid
JPS6246533B2 (en) * 1981-09-24 1987-10-02 Mitsubishi Gasu Kagaku Kk
WO2008105087A1 (en) * 2007-02-28 2008-09-04 Hitachi Plant Technologies, Ltd. Process for producing crude aromatic dicarboxylic acid to be fed to hydrogenation purification

Also Published As

Publication number Publication date
JPS6113457B2 (en) 1986-04-14

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