GB755012A - Process for the manufacture of oxidation products of phenanthrene - Google Patents

Process for the manufacture of oxidation products of phenanthrene

Info

Publication number
GB755012A
GB755012A GB191352A GB191352A GB755012A GB 755012 A GB755012 A GB 755012A GB 191352 A GB191352 A GB 191352A GB 191352 A GB191352 A GB 191352A GB 755012 A GB755012 A GB 755012A
Authority
GB
United Kingdom
Prior art keywords
phenanthrene
catalyst
vanadium pentoxide
potassium sulphate
silica gel
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
GB191352A
Inventor
James Douglas Brooks
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.)
CURA PATENTS Ltd
Original Assignee
CURA PATENTS 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 CURA PATENTS Ltd filed Critical CURA PATENTS Ltd
Priority to GB191352A priority Critical patent/GB755012A/en
Publication of GB755012A publication Critical patent/GB755012A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/78—Ring systems having three or more relevant rings
    • C07D311/80—Dibenzopyrans; Hydrogenated dibenzopyrans
    • 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
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/313—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with molecular oxygen

Abstract

In a process for the manufacture of oxidation products of phenanthrene, phenanthrene vapour and gaseous oxygen are passed in contact with a catalyst mixture of vanadium pentoxide and potassium sulphate in a ratio within the range of 1 : 2 to 1 : 4 parts by weight at a temperature within the range of 300 DEG to 500 DEG C. for a period of contact not less than 0.1 and not exceeding 10 seconds. The catalyst may be carried on silica gel or kieselguhr and is preferably maintained in the fluidized state by the passage of the gaseous stream. Such a catalyst may be obtained by stirring silica gel catalyst in a molten mixture of vanadium pentoxide and potassium sulphate. The process yields the lactone of 2 - hydroxy - diphenyl - 21 - carboxylic acid, 1 : 2-naphthalic anhydride and fluorenone and possibly also phthalic and maleic anhydrides, in proportions depending on the ratio of oxygen to phenanthrene and on the reaction temperature. The phenanthrene used may be pure or a concentrate obtained from creosote oil or petroleum residues. In examples the reaction temperature is 375 DEG C. and the catalyst, used in the form of a fluidized bed, comprises vanadium pentoxide and potassium sulphate in the ratio of 1 : 3.5 by weight. From the product maleic, phthalic and 1 : 2-naphthalic anhydrides are extracted with sodium carbonate solution, the lactone of 2-hydroxydiphenyl - 21 - carboxylic acid with sodium hydroxide, and the fluorenone in the form of its 2 : 4-dinitrophenyl hydrazone. Traces of 9 : 10-phenanthraquinone are also formed.ALSO:A catalyst for use in the vapour-phase oxidation of phenanthrene (see Group IV(b)], comprises vanadium pentoxide and potassium sulphate in a ratio within 1:2 to 1:4 parts by weight, which may be supported on silica gel or kieselguhr. It can be prepared by coating particles (preferably spherical) of silica gel by stirring in a molten mixture of vanadium pentoxide and potassium sulphate.
GB191352A 1952-01-23 1952-01-23 Process for the manufacture of oxidation products of phenanthrene Expired GB755012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB191352A GB755012A (en) 1952-01-23 1952-01-23 Process for the manufacture of oxidation products of phenanthrene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191352A GB755012A (en) 1952-01-23 1952-01-23 Process for the manufacture of oxidation products of phenanthrene

Publications (1)

Publication Number Publication Date
GB755012A true GB755012A (en) 1956-08-15

Family

ID=9730223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191352A Expired GB755012A (en) 1952-01-23 1952-01-23 Process for the manufacture of oxidation products of phenanthrene

Country Status (1)

Country Link
GB (1) GB755012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141645A1 (en) * 1981-03-16 1982-09-30 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. METHOD FOR THE PRODUCTION OF FLUORENONE AND BIPHENYL PRODUCTS FROM A MULTI-NUCLEAR HYDROCARBON SUBSTRATE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141645A1 (en) * 1981-03-16 1982-09-30 Hydrocarbon Research Inc., 08648 Lawrenceville, N.J. METHOD FOR THE PRODUCTION OF FLUORENONE AND BIPHENYL PRODUCTS FROM A MULTI-NUCLEAR HYDROCARBON SUBSTRATE

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