GB572260A - Improved process for the manufacture of adipic acid - Google Patents

Improved process for the manufacture of adipic acid

Info

Publication number
GB572260A
GB572260A GB547944A GB547944A GB572260A GB 572260 A GB572260 A GB 572260A GB 547944 A GB547944 A GB 547944A GB 547944 A GB547944 A GB 547944A GB 572260 A GB572260 A GB 572260A
Authority
GB
United Kingdom
Prior art keywords
copper
vanadium
oxidation
cyclohexanol
cyclohexanone
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
GB547944A
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
Priority to BE462979D priority Critical patent/BE462979A/xx
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB547944A priority patent/GB572260A/en
Publication of GB572260A publication Critical patent/GB572260A/en
Priority to CH251386D priority patent/CH251386A/en
Priority to FR919755D priority patent/FR919755A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/316Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with oxides of nitrogen or nitrogen-containing mineral acids

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

Adipic acid is prepared by the nitric acid oxidation of cyclohexanol or cyclohexanone or mixtures obtained by the oxidation of cyclohexane comprising cyclohexanol and/or cyclohexanone, in the presence of both vanadium and copper, either as such or in the form of their oxides or salts, the amount of copper used being between 1 part and 40 parts by weight per part of the vanadium used. The vanadium catalyst may be added as the metal, the oxide, or a salt containing vanadium, for example, vanadium pentoxide and ammonium vanadate. The copper catalyst may be added as metal, oxide or salt, for example, copper sulphate or nitrate. The weight of vanadium catalyst used should be at least 0.01 per cent and preferably at least 0.03 per cent by weight of the amount of nitric acid. In the oxidation of cyclohexanol, amounts of 2 to 10 parts of copper should be used and in the case of cyclohexanone, 2 to 15 parts, preferably in the form of the metal. The temperature may vary between 40 DEG and 110 DEG C. In general, at least two molecular proportions of nitric acid per molecule of starting material should be used. Sulphuric acid may be added, if desired, to the oxidation mixture. The process may be carried out batchwise or continuous as described in Specification 567,525. In examples, the catalysts employed are ammonium vanadate and copper turnings or copper sulphate. Specification 265,959, [Class 2 (iii)], also is referred to.
GB547944A 1944-03-24 1944-03-24 Improved process for the manufacture of adipic acid Expired GB572260A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE462979D BE462979A (en) 1944-03-24
GB547944A GB572260A (en) 1944-03-24 1944-03-24 Improved process for the manufacture of adipic acid
CH251386D CH251386A (en) 1944-03-24 1945-10-23 Process for the production of adipic acid.
FR919755D FR919755A (en) 1944-03-24 1946-01-07 Manufacture of adipic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB547944A GB572260A (en) 1944-03-24 1944-03-24 Improved process for the manufacture of adipic acid

Publications (1)

Publication Number Publication Date
GB572260A true GB572260A (en) 1945-09-28

Family

ID=9796971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB547944A Expired GB572260A (en) 1944-03-24 1944-03-24 Improved process for the manufacture of adipic acid

Country Status (4)

Country Link
BE (1) BE462979A (en)
CH (1) CH251386A (en)
FR (1) FR919755A (en)
GB (1) GB572260A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791566A (en) * 1953-09-16 1957-05-07 Ici Ltd Catalyst recovery process
US3459512A (en) * 1965-01-20 1969-08-05 Ici Ltd Centrifugal recovery of copper-vanadium catalyst from adipic acid reaction mixture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2791566A (en) * 1953-09-16 1957-05-07 Ici Ltd Catalyst recovery process
US3459512A (en) * 1965-01-20 1969-08-05 Ici Ltd Centrifugal recovery of copper-vanadium catalyst from adipic acid reaction mixture

Also Published As

Publication number Publication date
FR919755A (en) 1947-03-18
BE462979A (en)
CH251386A (en) 1947-10-31

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