ATE365072T1 - Katalysator und verfahren zur konvertierung von ethylbenzol enthalten in der xylenbeschickung mit diesem katalysator - Google Patents

Katalysator und verfahren zur konvertierung von ethylbenzol enthalten in der xylenbeschickung mit diesem katalysator

Info

Publication number
ATE365072T1
ATE365072T1 AT04254026T AT04254026T ATE365072T1 AT E365072 T1 ATE365072 T1 AT E365072T1 AT 04254026 T AT04254026 T AT 04254026T AT 04254026 T AT04254026 T AT 04254026T AT E365072 T1 ATE365072 T1 AT E365072T1
Authority
AT
Austria
Prior art keywords
catalyst
conversing
xylene feed
ethylbenzene contained
ethylbenzene
Prior art date
Application number
AT04254026T
Other languages
English (en)
Inventor
Kazuyoshi Iwayama
Hiroshi Konta
Masatoshi Watanabe
Original Assignee
Toray Industries
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 Toray Industries filed Critical Toray Industries
Application granted granted Critical
Publication of ATE365072T1 publication Critical patent/ATE365072T1/de

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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
    • 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
    • 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
    • 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
    • B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • 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
    • B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
    • B01J29/44—Noble metals
    • 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
    • B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
    • B01J29/46—Iron group 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
    • B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • B01J29/48—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing arsenic, antimony, bismuth, vanadium, niobium tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
    • C07C5/27—Rearrangement of carbon atoms in the hydrocarbon skeleton
    • C07C5/2729—Changing the branching point of an open chain or the point of substitution on a ring
    • C07C5/2732—Catalytic processes
    • C07C5/2737—Catalytic processes with crystalline alumino-silicates, e.g. molecular sieves
    • 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
    • B01J2229/42—Addition of matrix or binder particles
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/20—Sulfiding
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
    • C07C2521/04—Alumina
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the alkali- or alkaline earth metals or beryllium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • C07C2523/32—Manganese, technetium or rhenium
    • C07C2523/36—Rhenium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
    • C07C2523/42—Platinum
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/48—Silver or gold
    • C07C2523/50—Silver
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36
    • C07C2523/66—Silver or gold
    • C07C2523/68—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tatalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
    • C07C2523/74—Iron group metals
    • C07C2523/755—Nickel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
AT04254026T 2003-07-08 2004-07-05 Katalysator und verfahren zur konvertierung von ethylbenzol enthalten in der xylenbeschickung mit diesem katalysator ATE365072T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003193267 2003-07-08
JP2003313585 2003-09-05

Publications (1)

Publication Number Publication Date
ATE365072T1 true ATE365072T1 (de) 2007-07-15

Family

ID=33455603

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04254026T ATE365072T1 (de) 2003-07-08 2004-07-05 Katalysator und verfahren zur konvertierung von ethylbenzol enthalten in der xylenbeschickung mit diesem katalysator

Country Status (11)

Country Link
US (1) US7199070B2 (de)
EP (1) EP1495805B1 (de)
KR (1) KR101026787B1 (de)
AT (1) ATE365072T1 (de)
CA (1) CA2473066A1 (de)
DE (1) DE602004007066T2 (de)
ES (1) ES2287654T3 (de)
MY (1) MY136850A (de)
PT (1) PT1495805E (de)
SG (1) SG108993A1 (de)
TW (1) TWI263630B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8445398B2 (en) * 2007-07-31 2013-05-21 Exxonmobil Chemical Patents Inc. Ion exchange process for making molecular sieve composition
EP2022564A1 (de) * 2007-07-31 2009-02-11 Shell Internationale Researchmaatschappij B.V. Katalysatorzusammensetzung sowie ihre Herstellung und Verwendung
WO2009116561A1 (ja) * 2008-03-19 2009-09-24 東レ株式会社 エチルベンゼンの転化方法及びパラキシレン製造方法
DE102008030818B4 (de) * 2008-06-30 2022-03-03 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Oberflächenemittierender Halbleiterlaser mit mehreren aktiven Zonen
CN102527430B (zh) * 2010-12-29 2014-04-30 中国石油化工股份有限公司 银催化剂载体的制备方法、由此制备的载体、由该载体制成的银催化剂及其应用
WO2013130194A1 (en) 2012-02-29 2013-09-06 Exxonmobil Chemical Patents Inc. Bimetallic catalyst and use in xylene production
WO2018118208A1 (en) 2016-12-21 2018-06-28 Uop Llc Composition of matter and structure of zeolite uzm-55 and use in isomerization of aromatic molecules
CN111448178B (zh) * 2017-12-05 2023-01-06 埃克森美孚化学专利公司 二甲苯生产方法和系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946606A (de) 1972-09-08 1974-05-04
US3856871A (en) * 1973-09-13 1974-12-24 Mobil Oil Corp Xylene isomerization
US4163028A (en) * 1977-07-22 1979-07-31 Mobil Oil Corporation Xylene isomerization
US4159282A (en) 1978-06-09 1979-06-26 Mobil Oil Corporation Xylene isomerization
JPS57200319A (en) 1981-06-03 1982-12-08 Toray Ind Inc Conversion of xylenes containing ethylbenzene
US4899011A (en) 1986-01-15 1990-02-06 Mobil Oil Corporation Xylene isomerization process to exhaustively convert ethylbenzene and non-aromatics
FR2619319B1 (fr) * 1987-08-14 1990-01-12 Inst Francais Du Petrole Catalyseur du type aluminosilicate renfermant au moins un metal noble et son utilisation en isomerisation d'une coupe c8 aromatique
US5004855A (en) * 1987-08-25 1991-04-02 Toray Industries, Inc. Process for conversion of ethylbenzene in C8 aromatic hydrocarbon mixture
EP0500413B1 (de) * 1991-02-19 1995-09-20 Institut Français du Pétrole Verwendung von Gallo-Aluminosilikat-Katalysatoren bei der Aromatisierung von Kohlenwasserstoffen mit 2 bis 7 Kohlenstoffatomen
DE4137013A1 (de) * 1991-11-11 1993-05-13 Basf Ag Verfahren zur herstellung von aminen durch reduktive aminierung
US5672796A (en) * 1992-02-13 1997-09-30 Amoco Corporation Catalyst and process for hydrocarbon aromatization
US5877374A (en) * 1997-04-02 1999-03-02 Chevron Chemical Company Low pressure hydrodealkylation of ethylbenzene and xylene isomerization
US6028238A (en) * 1998-04-14 2000-02-22 Mobil Oil Corporation Xylene isomerization
US6051520A (en) * 1998-05-19 2000-04-18 Phillips Petroleum Company Hydrotreating catalyst composition and processes therefor and therewith
US6462248B1 (en) * 1998-09-09 2002-10-08 Toray Industries, Inc. Method for producing aromatic compounds having alkyl group with at least three carbon atoms
US6051744A (en) * 1998-12-17 2000-04-18 Chevron Chemical Company Llc Low pressure hydrodealkylation of ethylbenzene and xylene isomerization
DE60012323T2 (de) * 2000-09-06 2005-08-18 Uop Llc, Des Plaines Verfahren zur Isomerisierung von Xylolen mit gleichzeitiger Umsetzung von Ethylbenzol

Also Published As

Publication number Publication date
KR20050006043A (ko) 2005-01-15
DE602004007066D1 (de) 2007-08-02
TW200505820A (en) 2005-02-16
TWI263630B (en) 2006-10-11
PT1495805E (pt) 2007-07-13
SG108993A1 (en) 2005-02-28
US7199070B2 (en) 2007-04-03
CA2473066A1 (en) 2005-01-08
EP1495805A1 (de) 2005-01-12
EP1495805B1 (de) 2007-06-20
KR101026787B1 (ko) 2011-04-04
ES2287654T3 (es) 2007-12-16
DE602004007066T2 (de) 2007-09-27
MY136850A (en) 2008-11-28
US20050010074A1 (en) 2005-01-13

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