GB397901A - Improvements in the reduction of aromatic hydroxy compounds - Google Patents

Improvements in the reduction of aromatic hydroxy compounds

Info

Publication number
GB397901A
GB397901A GB592132A GB592132A GB397901A GB 397901 A GB397901 A GB 397901A GB 592132 A GB592132 A GB 592132A GB 592132 A GB592132 A GB 592132A GB 397901 A GB397901 A GB 397901A
Authority
GB
United Kingdom
Prior art keywords
sulphide
vanadium
molybdenum
tungsten
sulphides
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
GB592132A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB592132A priority Critical patent/GB397901A/en
Publication of GB397901A publication Critical patent/GB397901A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/02Monocyclic hydrocarbons

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Aromatic hydrocarbons are prepared by circulating aromatic hydroxy compounds in the vapour phase with hydrogen under pressure over the customary catalysts, the time of contact being so short that a substantial part, preferably from 10 to 40 per cent, of the hydroxy compound remains unconverted. The hydroxy compound is preferably passed over the catalyst in an amount per hour which, measured as a liquid, is at least equal to but not more than twice the volume of the catalyst. The product is isolated from the reaction gases and the remainder introduced with fresh hydroxy compound into the reaction chamber. As catalyst is preferably employed a metal of group 6 or of the iron group or vanadium or a compound thereof, particularly a sulphide or selenide of molybdenum, tungsten or vanadium. The said sulphides or selenides may be mixed with graphite, kaolin, zinc oxide or sulphide; whilst it is advantageous, in the case of molybdenum and tungsten sulphides to heat them temporarily to a high temperature, e.g. 750-850 DEG C., before use. Pressures of 20-300 atmospheres and temperatures of 350-550 DEG C. may be employed. Aromatic hydroxy compounds mentioned are phenol, cresols, xylenols, ethylphenols, dihydroxy- and trihydroxybenzenes, and naphthols. Examples are given of the conversion into the corresponding aromatic hydrocarbons of (1) phenol over molybdenum sulphide, (2) the crude phenolic oil mixture obtained by dephenolizing brown coal low temperature carbonization water over a pressed mixture of graphite and tungsten sulphide previously heated to 750 DEG C., and (3) crude cresol over vanadium sulphide.ALSO:Catalysts for the reduction of aromatic hydroxy compounds to aromatic hydrocarbons at elevated temperature and pressure preferably comprise a metal of group 6 or of the iron group or vanadium or a compound thereof, particularly sulphide or selenide of molybdenum, tungsten or vanadium. The said sulphides or selenides may be mixed with graphite, kaolin, zinc oxide or sulphide, whilst it is advantageous, in the case of molybdenum and tungsten sulphides, to heat them temporarily to a high temperature, e.g. 750-850 DEG C., before use.
GB592132A 1932-02-27 1932-02-27 Improvements in the reduction of aromatic hydroxy compounds Expired GB397901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB592132A GB397901A (en) 1932-02-27 1932-02-27 Improvements in the reduction of aromatic hydroxy compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB592132A GB397901A (en) 1932-02-27 1932-02-27 Improvements in the reduction of aromatic hydroxy compounds

Publications (1)

Publication Number Publication Date
GB397901A true GB397901A (en) 1933-08-28

Family

ID=9805130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB592132A Expired GB397901A (en) 1932-02-27 1932-02-27 Improvements in the reduction of aromatic hydroxy compounds

Country Status (1)

Country Link
GB (1) GB397901A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097541A (en) * 1973-06-21 1978-06-27 Kogyo Kaihatsu Kenkyusho (Industrial Research Institut) Process of producing mainly monocyclic aromatic compounds from unutilized carbon resources mainly composed of polycyclic aromatic compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097541A (en) * 1973-06-21 1978-06-27 Kogyo Kaihatsu Kenkyusho (Industrial Research Institut) Process of producing mainly monocyclic aromatic compounds from unutilized carbon resources mainly composed of polycyclic aromatic compounds

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