GB1505637A - Catalytic hydrodealkylation of alkylaromatic hydrocarbons - Google Patents

Catalytic hydrodealkylation of alkylaromatic hydrocarbons

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Publication number
GB1505637A
GB1505637A GB43008/77A GB4300877A GB1505637A GB 1505637 A GB1505637 A GB 1505637A GB 43008/77 A GB43008/77 A GB 43008/77A GB 4300877 A GB4300877 A GB 4300877A GB 1505637 A GB1505637 A GB 1505637A
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GB
United Kingdom
Prior art keywords
range
catalyst
hydrocarbon
catalytic hydrodealkylation
rhenium
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
GB43008/77A
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IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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Publication date
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of GB1505637A publication Critical patent/GB1505637A/en
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
    • C07C4/08—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule
    • C07C4/12—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene
    • C07C4/14—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene splitting taking place at an aromatic-aliphatic bond
    • C07C4/18—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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Abstract

1505637 Catalytic hydrodealkylation INSTITUT FRANCAIS DU PETROLE 26 Feb 1975 [9 Sept 1974] 43008/77 Divided out of 1505112 Heading C5E [Also in Division Bl] A process for the catalytic hydrodealkylation of an alkylaromatic hydrocarbon comprises contacting the hydrocarbon, substantially sulphur-free, at a temperature in the range 400‹-650‹ C. in the presence of hydrogen, under a pressure in the range 1-40 kg/cm<SP>2</SP>, at a spatial velocity in the range 1-10 and a ratio of the hydrogen to the hydrocarbon, expressed as moles per mole at the outlet of the reactor, in the range 1 to 10 and in the presence of a catalyst comprising: (a) a carrier (e.g. alumina); (b) at least one element selected from chromium, molybdenum, tungsten, rhenium, and manganese, at a concentration in the range 0À05-20% by weight of the catalyst; (c) at least one additional element, different from component (b), selected from chromium, molybdenum, tungsten, rhenium, manganese, copper, silver, gold, zinc, cadmium, gallium, indium, thallium, germanium, tin and lead, at a concentration in the range 0À05 -20% by weight of the catalyst; the catalyst being alkali-metal-free.
GB43008/77A 1974-09-09 1975-02-26 Catalytic hydrodealkylation of alkylaromatic hydrocarbons Expired GB1505637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7430692A FR2283878A1 (en) 1974-09-09 1974-09-09 PROCESS FOR HYDRODEALKYLATION OF AROMATIC ALKYL HYDROCARBONS

Publications (1)

Publication Number Publication Date
GB1505637A true GB1505637A (en) 1978-03-30

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GB43008/77A Expired GB1505637A (en) 1974-09-09 1975-02-26 Catalytic hydrodealkylation of alkylaromatic hydrocarbons

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FR (1) FR2283878A1 (en)
GB (1) GB1505637A (en)

Also Published As

Publication number Publication date
FR2283878A1 (en) 1976-04-02
FR2283878B1 (en) 1979-03-09

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