WO2003068372A3 - Composition catalytique a base d'au moins deux catalyseurs utilisable dans le traitement des gaz d'echapppement de moteurs. - Google Patents

Composition catalytique a base d'au moins deux catalyseurs utilisable dans le traitement des gaz d'echapppement de moteurs. Download PDF

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Publication number
WO2003068372A3
WO2003068372A3 PCT/FR2003/000434 FR0300434W WO03068372A3 WO 2003068372 A3 WO2003068372 A3 WO 2003068372A3 FR 0300434 W FR0300434 W FR 0300434W WO 03068372 A3 WO03068372 A3 WO 03068372A3
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WO
WIPO (PCT)
Prior art keywords
lean
catalysts
treatment
exhaust gases
catalytic composition
Prior art date
Application number
PCT/FR2003/000434
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English (en)
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WO2003068372A2 (fr
Inventor
Gilbert Blanchard
Catherine Hedouin
Original Assignee
Rhodia Elect & Catalysis
Gilbert Blanchard
Catherine Hedouin
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 Rhodia Elect & Catalysis, Gilbert Blanchard, Catherine Hedouin filed Critical Rhodia Elect & Catalysis
Priority to AU2003222901A priority Critical patent/AU2003222901A1/en
Publication of WO2003068372A2 publication Critical patent/WO2003068372A2/fr
Publication of WO2003068372A3 publication Critical patent/WO2003068372A3/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9422—Processes characterised by a specific catalyst for removing nitrogen oxides by NOx storage or reduction by cyclic switching between lean and rich exhaust gases (LNT, NSC, NSR)
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002—Mixed oxides other than spinels, e.g. perovskite
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/32—Manganese, technetium or rhenium
    • B01J23/34—Manganese
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/63—Platinum group metals with rare earths or actinides
    • 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
    • B01J35/19—Catalysts containing parts with different compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1025—Rhodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/202—Alkali metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2061—Yttrium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2066—Praseodymium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20715—Zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • 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
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

L'invention concerne une composition catalytique à base de deux, et éventuellement trois, catalyseurs utilisable dans le traitement des gaz d'échappement de moteurs fonctionnant en mélange pauvre notamment. Cette composition est caractérisée en ce qu'elle comprend un premier catalyseur qui comprend au moins un métal précieux sur un support à base d'oxyde de cérium, d'oxyde de titane ou d'un mélange d'oxyde de zirconium et d'oxyde de titane; un second catalyseur du type piège à NOx et, éventuellement, un troisième catalyseur ayant au moins une fonction de réduction des NOx.
PCT/FR2003/000434 2002-02-15 2003-02-11 Composition catalytique a base d'au moins deux catalyseurs utilisable dans le traitement des gaz d'echapppement de moteurs. WO2003068372A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003222901A AU2003222901A1 (en) 2002-02-15 2003-02-11 Catalytic composition comprising two catalysts which can be used in the treatment of exhaust gases from, for example, lean-burn engines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR02/01927 2002-02-15
FR0201927A FR2836068B1 (fr) 2002-02-15 2002-02-15 Composition catalytique a base de deux catalyseurs utilisable dans le traitement des gaz d'echappement de moteurs fonctionnant en melange pauvre notamment

Publications (2)

Publication Number Publication Date
WO2003068372A2 WO2003068372A2 (fr) 2003-08-21
WO2003068372A3 true WO2003068372A3 (fr) 2004-04-22

Family

ID=27636210

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2003/000434 WO2003068372A2 (fr) 2002-02-15 2003-02-11 Composition catalytique a base d'au moins deux catalyseurs utilisable dans le traitement des gaz d'echapppement de moteurs.

Country Status (3)

Country Link
AU (1) AU2003222901A1 (fr)
FR (1) FR2836068B1 (fr)
WO (1) WO2003068372A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2845932A1 (fr) * 2002-10-17 2004-04-23 Rhodia Elect & Catalysis Composition catalytique a base d'alume, de manganese, de potassium, de rubidium ou de cesium et de platine et son utilisation comme piege a nox dans le traitement de gaz

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764459A2 (fr) * 1995-09-21 1997-03-26 Ford Motor Company Limited Séparateurs pour oxyde d'azote
WO1997043214A1 (fr) * 1996-05-15 1997-11-20 Rhodia Chimie Composition a base d'oxyde de cerium et d'oxyde de zirconium, procede de preparation et utilisation en catalyse
EP0992276A1 (fr) * 1998-09-29 2000-04-12 Mazda Motor Corporation Catalyseur pour purifier le gaz d'échappement
US6066587A (en) * 1996-09-26 2000-05-23 Mazda Motor Corporation Catalyst for purifying exhaust gas
US6217831B1 (en) * 1994-01-20 2001-04-17 Toyota Jidosha Kabushiki Kaisha Catalyst for purifying exhaust gases

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6217831B1 (en) * 1994-01-20 2001-04-17 Toyota Jidosha Kabushiki Kaisha Catalyst for purifying exhaust gases
EP0764459A2 (fr) * 1995-09-21 1997-03-26 Ford Motor Company Limited Séparateurs pour oxyde d'azote
WO1997043214A1 (fr) * 1996-05-15 1997-11-20 Rhodia Chimie Composition a base d'oxyde de cerium et d'oxyde de zirconium, procede de preparation et utilisation en catalyse
US6066587A (en) * 1996-09-26 2000-05-23 Mazda Motor Corporation Catalyst for purifying exhaust gas
EP0992276A1 (fr) * 1998-09-29 2000-04-12 Mazda Motor Corporation Catalyseur pour purifier le gaz d'échappement

Also Published As

Publication number Publication date
WO2003068372A2 (fr) 2003-08-21
FR2836068B1 (fr) 2005-01-21
AU2003222901A1 (en) 2003-09-04
FR2836068A1 (fr) 2003-08-22
AU2003222901A8 (en) 2003-09-04

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