GB2012752A - Oxidation Process for the Preparation of Terephthalic Acid - Google Patents

Oxidation Process for the Preparation of Terephthalic Acid

Info

Publication number
GB2012752A
GB2012752A GB7849337A GB7849337A GB2012752A GB 2012752 A GB2012752 A GB 2012752A GB 7849337 A GB7849337 A GB 7849337A GB 7849337 A GB7849337 A GB 7849337A GB 2012752 A GB2012752 A GB 2012752A
Authority
GB
United Kingdom
Prior art keywords
terephthalic acid
preparation
cobalt
oxidation process
ppm
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
GB7849337A
Other versions
GB2012752B (en
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB7849337A priority Critical patent/GB2012752B/en
Publication of GB2012752A publication Critical patent/GB2012752A/en
Application granted granted Critical
Publication of GB2012752B publication Critical patent/GB2012752B/en
Expired 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
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

p-Xylene is continuously oxidised to terephthalic acid with oxygen in acetic acid at a temperature of 160 DEG to 180 DEG C in presence of a catalyst having less than 1200 ppm but not less than 800 ppm of cobalt (based on the acetic acid), manganese equal to 1% to 30% by weight of the cobalt and bromide at least 2.5 times the combined weight of the cobalt and manganese. The process yields highly pure terephthalic acid with low solvent burning.
GB7849337A 1978-01-13 1978-12-20 Oxidation process Expired GB2012752B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7849337A GB2012752B (en) 1978-01-13 1978-12-20 Oxidation process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB141178 1978-01-13
GB7849337A GB2012752B (en) 1978-01-13 1978-12-20 Oxidation process

Publications (2)

Publication Number Publication Date
GB2012752A true GB2012752A (en) 1979-08-01
GB2012752B GB2012752B (en) 1982-03-31

Family

ID=26236724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7849337A Expired GB2012752B (en) 1978-01-13 1978-12-20 Oxidation process

Country Status (1)

Country Link
GB (1) GB2012752B (en)

Also Published As

Publication number Publication date
GB2012752B (en) 1982-03-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee