GB1109540A - Production of epsilon-caprolactam - Google Patents

Production of epsilon-caprolactam

Info

Publication number
GB1109540A
GB1109540A GB58452/66A GB5845266A GB1109540A GB 1109540 A GB1109540 A GB 1109540A GB 58452/66 A GB58452/66 A GB 58452/66A GB 5845266 A GB5845266 A GB 5845266A GB 1109540 A GB1109540 A GB 1109540A
Authority
GB
United Kingdom
Prior art keywords
catalyst
copper
metal
caprolactam
caprolactone
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
GB58452/66A
Inventor
Tooru Hosoya
Isamu Fujita
Kiyoshi Otoi
Kazuhiro Obata
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.)
Kanegafuchi Spinning Co Ltd
Original Assignee
Kanegafuchi Spinning Co 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 Kanegafuchi Spinning Co Ltd filed Critical Kanegafuchi Spinning Co Ltd
Priority to GB58452/66A priority Critical patent/GB1109540A/en
Publication of GB1109540A publication Critical patent/GB1109540A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/02—Preparation of lactams
    • C07D201/08—Preparation of lactams from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

Copper chromite, also referred to as copper chromium oxide, which may contain an optional third metal is prepared (a) by mixing aqueous solutions of ammonia, a cupric salt, a dichromate and optionally an additional metal salt and then thermally decomposing the resulting precipitate or (b) by reducing a mixture of the appropriate metal oxides with hydrogen. The molar ratio of copper to chromium in the compound is from 1 : 0.1 to 1 : 1.5 and of copper to the third metal is from 1 : 0.01 to 1 : 0.2. The compound may be shaped, e.g. into particles of 10 mesh size and is used as a catalyst in the conversion of e -caprolactone into e -caprolactam. A large number of optional metals is specified.ALSO:e -Caprolactam is prepared by reacting e -caprolactone with ammonia in the presence of hydrogen and a copper chromite catalyst, in the vapour phase. The addition of water to the reaction mixture, within the range 0 to 200 moles per mole of e -caprolactone, increases the life of the catalyst and the selectivity of e -caprolactam formation. Suitably the reaction is carried out at a temperature of 170 DEG to 300 DEG at a pressure of 0.5 to 3 atmospheres and with a partial pressure of hydrogen of 0.01 to 3 atmospheres. The molar ratio of copper to chromium in the catalyst is from 1:0.1 to 1:1.5 and the catalyst can include as an additional metal: calcium, strontium, magnesium, barium, zinc, cadmium, aluminium, gallium, titanium, germanium, tin, lead, vanadium antimony, bismuth, molybdenum, manganese, rhenium, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium and platinum.ALSO:A catalyst for the conversion of e -caprolactone to e -caprolactam comprises copper chromite which may contain a third metal and may be used alone or on a carrier e.g. kieselguhr, silica gel, alumina or pumice. The preparation and shaping of these catalysts are described. The molar ratio of copper to chromium in the catalyst is from 1:0.1 to 1:1.5 and the third metal may be: calcium, strontium, magnesium, barium, zinc, cadmium, aluminium, gallium, titanium, germanium, tin, lead, vanadium, antimony, bismuth, molybdenum, manganese, rhenium, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium and platinum.
GB58452/66A 1966-12-30 1966-12-30 Production of epsilon-caprolactam Expired GB1109540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB58452/66A GB1109540A (en) 1966-12-30 1966-12-30 Production of epsilon-caprolactam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB58452/66A GB1109540A (en) 1966-12-30 1966-12-30 Production of epsilon-caprolactam

Publications (1)

Publication Number Publication Date
GB1109540A true GB1109540A (en) 1968-04-10

Family

ID=10481654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB58452/66A Expired GB1109540A (en) 1966-12-30 1966-12-30 Production of epsilon-caprolactam

Country Status (1)

Country Link
GB (1) GB1109540A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993016042A1 (en) * 1992-02-07 1993-08-19 Akzo N.V. Process for producing pyrrolidone and n-alkyl pyrrolidones
CN112337470A (en) * 2019-08-07 2021-02-09 中国石油化工股份有限公司 Catalyst for preparing organic amine through fatty carboxylic ester amination reaction and preparation method and application thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993016042A1 (en) * 1992-02-07 1993-08-19 Akzo N.V. Process for producing pyrrolidone and n-alkyl pyrrolidones
US5478950A (en) * 1992-02-07 1995-12-26 Akzo Nobel N.V. Process for producing pyrrolidone and N-alkyl pyrrolidones
CN112337470A (en) * 2019-08-07 2021-02-09 中国石油化工股份有限公司 Catalyst for preparing organic amine through fatty carboxylic ester amination reaction and preparation method and application thereof
CN112337470B (en) * 2019-08-07 2023-08-15 中国石油化工股份有限公司 Catalyst for preparing organic amine by amination reaction of fatty carboxylic ester, preparation method and application thereof

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