GB1355344A - Dealkylation of aromatic hydrocarbons - Google Patents

Dealkylation of aromatic hydrocarbons

Info

Publication number
GB1355344A
GB1355344A GB3794070A GB1355344DA GB1355344A GB 1355344 A GB1355344 A GB 1355344A GB 3794070 A GB3794070 A GB 3794070A GB 1355344D A GB1355344D A GB 1355344DA GB 1355344 A GB1355344 A GB 1355344A
Authority
GB
United Kingdom
Prior art keywords
aromatic hydrocarbons
dealkylation
ethylbenzene
support
viii metal
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
GB3794070A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3794070 priority Critical
Publication of GB1355344A publication Critical patent/GB1355344A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C4/00Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
    • C07C4/08Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule
    • C07C4/12Preparation 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
    • C07C4/14Preparation 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
    • C07C4/20Hydrogen being formed in situ, e.g. from steam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/02Boron or aluminium; Oxides or hydroxides thereof
    • C07C2521/04Alumina
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/40Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/48Silver or gold
    • C07C2523/50Silver
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/48Silver or gold
    • C07C2523/52Gold
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
    • C07C2523/74Iron group metals

Abstract

1355344 Dealkylating C 8 aromatic hydrocarbons IMPERIAL CHEMICAL INDUSTRIES Ltd 28 July 1971 [6 Aug 1970] 37940/70 Heading C5E A process for the preferential dealkylation of ethylbenzene in a mixture of ethylbenzene and xylenes comprises passing the feed with steam, preferably in substantial molar excess, in the vapour phase at 300-800‹ C. over a catalyst comprising Ag, Au or a Group VIII metal on a support and separating benzene from the other aromatic hydrocarbons in the organic phase of the product. Preferably the reaction is carried out at 5-50 atmos. gauge and in the presence of H 2 . The Group VIII metal may be Ni, Pt, Pd, RR, Ru or Ir and the support is preferably Al 2 O 3 containing at least 50% alpha-alumina. Aliphatic hydrocarbons may be present in the feedstock.
GB3794070A 1970-08-06 1970-08-06 Dealkylation of aromatic hydrocarbons Expired GB1355344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3794070 1970-08-06

Publications (1)

Publication Number Publication Date
GB1355344A true GB1355344A (en) 1974-06-05

Family

ID=10400088

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3794070A Expired GB1355344A (en) 1970-08-06 1970-08-06 Dealkylation of aromatic hydrocarbons

Country Status (3)

Country Link
DE (1) DE2139043A1 (en)
GB (1) GB1355344A (en)
NL (1) NL7110868A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1953128A1 (en) * 2007-01-26 2008-08-06 Linde Aktiengesellschaft Method for temperature regulation of a steam dealkylation reaction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2414034B1 (en) * 1978-01-06 1981-07-10 Inst Francais Du Petrole
FR2416210B1 (en) * 1978-02-03 1981-01-09 Inst Francais Du Petrole
US4199436A (en) * 1979-02-12 1980-04-22 Institut Francais Du Petrole Process for steam-dealkylating alkylaromatic hydrocarbons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1953128A1 (en) * 2007-01-26 2008-08-06 Linde Aktiengesellschaft Method for temperature regulation of a steam dealkylation reaction

Also Published As

Publication number Publication date
DE2139043A1 (en) 1972-02-10
NL7110868A (en) 1972-02-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee