GB722114A - Improvements in or relating to the manufacture of carboxylic acids - Google Patents

Improvements in or relating to the manufacture of carboxylic acids

Info

Publication number
GB722114A
GB722114A GB247552A GB247552A GB722114A GB 722114 A GB722114 A GB 722114A GB 247552 A GB247552 A GB 247552A GB 247552 A GB247552 A GB 247552A GB 722114 A GB722114 A GB 722114A
Authority
GB
United Kingdom
Prior art keywords
acid
give
liquid phase
relating
manufacture
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
GB247552A
Inventor
Robert Alfred Darrall
Randal George Arthur New
Edmund Cecil Owen
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 GB247552A priority Critical patent/GB722114A/en
Publication of GB722114A publication Critical patent/GB722114A/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

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

Para-tolualdehyde is oxidized with oxygen-containing gases in liquid phase, preferably in presence of a catalyst of the cobalt compound type, in solution, to give p-toluic acid and terephthalic acid, and the products may be further oxidized with nitric acid to give higher proportions of the latter acid. Examples describe the liquid phase oxidation to give a high proportion of p-toluic acid, followed by oxidation of the solid product thus obtained with nitric acid to give a high proportion of terephthalic acid, and the liquid phase oxidation of p-tolualdehyde in two stages, the second at higher temperature.
GB247552A 1952-01-30 1952-01-30 Improvements in or relating to the manufacture of carboxylic acids Expired GB722114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB247552A GB722114A (en) 1952-01-30 1952-01-30 Improvements in or relating to the manufacture of carboxylic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB247552A GB722114A (en) 1952-01-30 1952-01-30 Improvements in or relating to the manufacture of carboxylic acids

Publications (1)

Publication Number Publication Date
GB722114A true GB722114A (en) 1955-01-19

Family

ID=9740220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB247552A Expired GB722114A (en) 1952-01-30 1952-01-30 Improvements in or relating to the manufacture of carboxylic acids

Country Status (1)

Country Link
GB (1) GB722114A (en)

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