FR2411820A1 - Catalysts for steam dealkylation of alkyl-aromatics - comprising Gp=VIII metal on L-zeolite - Google Patents

Catalysts for steam dealkylation of alkyl-aromatics - comprising Gp=VIII metal on L-zeolite

Info

Publication number
FR2411820A1
FR2411820A1 FR7738277A FR7738277A FR2411820A1 FR 2411820 A1 FR2411820 A1 FR 2411820A1 FR 7738277 A FR7738277 A FR 7738277A FR 7738277 A FR7738277 A FR 7738277A FR 2411820 A1 FR2411820 A1 FR 2411820A1
Authority
FR
France
Prior art keywords
degrees
zeolite
catalysts
aromatics
alkyl
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.)
Granted
Application number
FR7738277A
Other languages
French (fr)
Other versions
FR2411820B1 (en
Inventor
Daniel Duprez
Michel Grand
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.)
Elf Union
Original Assignee
Elf Union
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 Elf Union filed Critical Elf Union
Priority to FR7738277A priority Critical patent/FR2411820A1/en
Priority to FR7806159A priority patent/FR2418782A2/en
Priority to NL7812216A priority patent/NL7812216A/en
Priority to SU782699957A priority patent/SU982530A3/en
Priority to GB7848897A priority patent/GB2012605B/en
Priority to BE192373A priority patent/BE872834A/en
Priority to CA318,082A priority patent/CA1124225A/en
Priority to IT30938/78A priority patent/IT1100648B/en
Priority to JP15813878A priority patent/JPS5489990A/en
Priority to US05/970,332 priority patent/US4238368A/en
Priority to DE2854879A priority patent/DE2854879C3/en
Publication of FR2411820A1 publication Critical patent/FR2411820A1/en
Application granted granted Critical
Publication of FR2411820B1 publication Critical patent/FR2411820B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C07C4/20—Hydrogen being formed in situ, e.g. from steam
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789
    • B01J29/61—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789 containing iron group metals, noble metals or copper
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789
    • B01J29/64—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/30—After treatment, characterised by the means used
    • B01J2229/36—Steaming
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2529/00—Catalysts comprising molecular sieves
    • C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
    • C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • C07C2529/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L
    • C07C2529/61—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L containing iron group metals, noble metals or copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Catalysts for steam dealkylation of petroleum fractions contg. mono- or polyalkyl aromatic hydrocarbons comprise 0.1-5 wt.% of >=1 Group (VIII) metal supported on an L zeolite which may be exchanged with alkali metal cations or with polyvalent Group Vb, VIb or VIIb metal cations. Pref. catalysts comprise 0.1-2 wt.% Rh and/or Ir on ML zeolite (where M is Li, Na, Cs, V, Cr or Mn). The Rh and/or Ir can be incorporated by impregnation or ion exchange. Ion exchange is pref. effected by drying the zeolite at 140 degrees C in an air stream, contacting with an HCl or acetic acid soln. of the relevant metal(s), drying in air at 140 degrees C, and calcining in 2 stages by heating to 200 degrees C in 30-200 min and then heating to 500 degrees C in 30 min, followed by cooling in a desiccator. Before use, the catalyst is reduced in an H2 stream at 400-500 degrees C and then steamed at 400-600 degrees C for 15-240 min. The catalysts have high activity, selectivity and stability.
FR7738277A 1977-12-19 1977-12-19 Catalysts for steam dealkylation of alkyl-aromatics - comprising Gp=VIII metal on L-zeolite Granted FR2411820A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FR7738277A FR2411820A1 (en) 1977-12-19 1977-12-19 Catalysts for steam dealkylation of alkyl-aromatics - comprising Gp=VIII metal on L-zeolite
FR7806159A FR2418782A2 (en) 1977-12-19 1978-03-03 WATER DESALKYLATION CATALYST FOR AROMATIC HYDROCARBONS
NL7812216A NL7812216A (en) 1977-12-19 1978-12-15 CATALYST FOR THE REMOVAL OF ALKYL GROUPS WITH WATER FROM AROMATIC HYDROCARBONS.
GB7848897A GB2012605B (en) 1977-12-19 1978-12-18 Water dealkylation catalyst of aromatic hydrocarbons
BE192373A BE872834A (en) 1977-12-19 1978-12-18 WATER DESALKYLATION CATALYLER OF AROMATIC HYDROCARBONS
CA318,082A CA1124225A (en) 1977-12-19 1978-12-18 Aromatic hydro-carbon desalkylation with a water based catalyst
SU782699957A SU982530A3 (en) 1977-12-19 1978-12-18 Catalyst for aqueous dealkylation of toluene
IT30938/78A IT1100648B (en) 1977-12-19 1978-12-18 DEHALKATION CATALYST WITH HYDROCARBON WATER
JP15813878A JPS5489990A (en) 1977-12-19 1978-12-18 Catalyst for dealkylating aromatic hydrocarbon with water
US05/970,332 US4238368A (en) 1977-12-19 1978-12-18 Water dealkylation catalyst of aromatic hydrocarbons
DE2854879A DE2854879C3 (en) 1977-12-19 1978-12-19 Catalyst for dealkylation of petroleum cuttings containing mono- or polyalkylated aromatic hydrocarbons with water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7738277A FR2411820A1 (en) 1977-12-19 1977-12-19 Catalysts for steam dealkylation of alkyl-aromatics - comprising Gp=VIII metal on L-zeolite

Publications (2)

Publication Number Publication Date
FR2411820A1 true FR2411820A1 (en) 1979-07-13
FR2411820B1 FR2411820B1 (en) 1980-12-19

Family

ID=9199025

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738277A Granted FR2411820A1 (en) 1977-12-19 1977-12-19 Catalysts for steam dealkylation of alkyl-aromatics - comprising Gp=VIII metal on L-zeolite

Country Status (2)

Country Link
FR (1) FR2411820A1 (en)
SU (1) SU982530A3 (en)

Also Published As

Publication number Publication date
SU982530A3 (en) 1982-12-15
FR2411820B1 (en) 1980-12-19

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse