GB1464076A - Process for the preparation of 1,4-naphthoquinone - Google Patents

Process for the preparation of 1,4-naphthoquinone

Info

Publication number
GB1464076A
GB1464076A GB646175A GB646175A GB1464076A GB 1464076 A GB1464076 A GB 1464076A GB 646175 A GB646175 A GB 646175A GB 646175 A GB646175 A GB 646175A GB 1464076 A GB1464076 A GB 1464076A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
sulphate
sulphur
iron
naphthoquinone
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
GB646175A
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.)
Nihon Jyoryu Kogyo Co Ltd
Original Assignee
Nihon Jyoryu Kogyo 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 Nihon Jyoryu Kogyo Co Ltd filed Critical Nihon Jyoryu Kogyo Co Ltd
Publication of GB1464076A publication Critical patent/GB1464076A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C50/00—Quinones
    • C07C50/10—Quinones the quinoid structure being part of a condensed ring system containing two rings
    • C07C50/12—Naphthoquinones, i.e. C10H6O2
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00—Preparation of quinones
    • C07C46/02—Preparation of quinones by oxidation giving rise to quinoid structures
    • C07C46/04—Preparation of quinones by oxidation giving rise to quinoid structures of unsubstituted ring carbon atoms in six-membered aromatic rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Furan Compounds (AREA)

Abstract

1,4-Naphthoquinone is prepared by catalytic oxidation of naphthalene in the gaseous state by means of a gas containing molecular oxygen. The catalyst contains vanadium pentoxide or an Me oxide, in which Me is tungsten, titanium, zirconium, tantalum, caesium, molybdenum, chromium, niobium, nickel, aluminium, iron or silver, an alkali metal sulphate or iron sulphate and an alkali metal pyrosulphate on an inert support. Its activity and selectivity are increased by maintaining an equilibrium between the alkali metal sulphate and the alkali metal pyrosulphate. The proportions of these substances are kept constant by adding sulphur or a sulphur compound which is (are) capable of supplying the reaction system with sulphur trioxide to the starting material.
GB646175A 1974-02-18 1975-02-14 Process for the preparation of 1,4-naphthoquinone Expired GB1464076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49018523A JPS5834455B2 (en) 1974-02-18 1974-02-18 1,4- Naphthoquinonno Seizouhouhou

Publications (1)

Publication Number Publication Date
GB1464076A true GB1464076A (en) 1977-02-09

Family

ID=11973977

Family Applications (1)

Application Number Title Priority Date Filing Date
GB646175A Expired GB1464076A (en) 1974-02-18 1975-02-14 Process for the preparation of 1,4-naphthoquinone

Country Status (4)

Country Link
JP (1) JPS5834455B2 (en)
CH (1) CH613929A5 (en)
DE (1) DE2506809C2 (en)
GB (1) GB1464076A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409133A1 (en) * 1977-11-21 1979-06-15 Chicago Pneumatic Tool Co TWO-SPEED MOTORIZED TIGHTENING INSTRUMENT
GB2130197A (en) * 1982-11-12 1984-05-31 Kawasaki Kasei Chemicals Limit Process for producing 1,4- naphthoquinone

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2234306C3 (en) * 1972-07-12 1980-05-22 Bayer Ag, 5090 Leverkusen Process for the production of 1,4-naphthoquinone in addition to phthalic anhydride
JPS5328911B2 (en) * 1973-10-23 1978-08-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409133A1 (en) * 1977-11-21 1979-06-15 Chicago Pneumatic Tool Co TWO-SPEED MOTORIZED TIGHTENING INSTRUMENT
GB2130197A (en) * 1982-11-12 1984-05-31 Kawasaki Kasei Chemicals Limit Process for producing 1,4- naphthoquinone

Also Published As

Publication number Publication date
CH613929A5 (en) 1979-10-31
JPS5834455B2 (en) 1983-07-27
DE2506809C2 (en) 1984-11-15
JPS50111054A (en) 1975-09-01
DE2506809A1 (en) 1975-08-21

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
PS Patent sealed
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee