WO2005102933A3 - Zirconia core particles coated with ceria particles, production process thereof and exhaust gas purifying catalyst - Google Patents

Zirconia core particles coated with ceria particles, production process thereof and exhaust gas purifying catalyst Download PDF

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Publication number
WO2005102933A3
WO2005102933A3 PCT/JP2005/008464 JP2005008464W WO2005102933A3 WO 2005102933 A3 WO2005102933 A3 WO 2005102933A3 JP 2005008464 W JP2005008464 W JP 2005008464W WO 2005102933 A3 WO2005102933 A3 WO 2005102933A3
Authority
WO
WIPO (PCT)
Prior art keywords
metal oxide
exhaust gas
production process
gas purifying
purifying catalyst
Prior art date
Application number
PCT/JP2005/008464
Other languages
French (fr)
Other versions
WO2005102933A2 (en
Inventor
Masahide Miura
Oji Kuno
Original Assignee
Toyota Motor Co Ltd
Masahide Miura
Oji Kuno
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 Toyota Motor Co Ltd, Masahide Miura, Oji Kuno filed Critical Toyota Motor Co Ltd
Priority to EP05739092A priority Critical patent/EP1771383A2/en
Priority to US10/591,797 priority patent/US20070197373A1/en
Publication of WO2005102933A2 publication Critical patent/WO2005102933A2/en
Publication of WO2005102933A3 publication Critical patent/WO2005102933A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • 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
    • B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
    • 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
    • B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
    • B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
    • C01G1/02—Oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/40—Mixed oxides
    • B01D2255/407—Zr-Ce mixed oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/92—Dimensions
    • B01D2255/9202—Linear dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/92—Dimensions
    • B01D2255/9207—Specific surface
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The present invention provides a metal oxide particle for a catalyst support comprising multiple species of metal oxides and capable of satisfactorily exerting the properties of the respective metal oxides, and also provide a production process therefor and an exhaust gas purifying catalyst obtained from this metal oxide particle. A metal oxide particle of the present invention comprises a core part 1 relatively rich in a first metal oxide and a surface layer 2 relatively rich in a second metal oxide, the core part and the surface layer each comprising a plurality of primary particles (1a, 2a), and the primary particle diameter of the second metal oxide being smaller than the primary particle diameter of the first metal oxide.
PCT/JP2005/008464 2004-04-27 2005-04-27 Zirconia core particles coated with ceria particles, production process thereof and exhaust gas purifying catalyst WO2005102933A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05739092A EP1771383A2 (en) 2004-04-27 2005-04-27 Zirconia core particles coated with ceria particles, production process thereof and exhaust gas purifying catalyst
US10/591,797 US20070197373A1 (en) 2005-04-27 2005-04-27 Zirconia core particles coated with ceria particles, production process thereof and exhaust gas purifying catalyst

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004131619A JP4165442B2 (en) 2004-04-27 2004-04-27 Metal oxide particles, production method thereof, and exhaust gas purification catalyst
JP2004-131619 2004-04-27

Publications (2)

Publication Number Publication Date
WO2005102933A2 WO2005102933A2 (en) 2005-11-03
WO2005102933A3 true WO2005102933A3 (en) 2006-01-12

Family

ID=35064471

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/008464 WO2005102933A2 (en) 2004-04-27 2005-04-27 Zirconia core particles coated with ceria particles, production process thereof and exhaust gas purifying catalyst

Country Status (4)

Country Link
EP (1) EP1771383A2 (en)
JP (1) JP4165442B2 (en)
CN (1) CN1972871A (en)
WO (1) WO2005102933A2 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4165419B2 (en) 2004-03-09 2008-10-15 トヨタ自動車株式会社 Method for producing metal oxide particles and exhaust gas purification catalyst
JP4165443B2 (en) 2004-04-27 2008-10-15 トヨタ自動車株式会社 Method for producing metal oxide particles and exhaust gas purification catalyst
US7989387B2 (en) 2004-04-27 2011-08-02 Toyota Jidosha Kabushiki Kaisha Process for producing metal oxide particle and exhaust gas purifying catalyst
JP4179299B2 (en) 2005-03-23 2008-11-12 トヨタ自動車株式会社 Catalyst carrier powder and exhaust gas purification catalyst
US20090084090A1 (en) * 2005-04-11 2009-04-02 Tadao Nakatsuji Catalyst and Catalyst Structure for Reduction of Nitrogen Oxides, and Method for Catalytic Reduction of Nitrogen Oxides
JP2007268460A (en) 2006-03-31 2007-10-18 Toyota Motor Corp Metal oxide catalyst carrier particle, and exhaust gas purification catalyst
JP5092281B2 (en) * 2006-05-26 2012-12-05 株式会社豊田中央研究所 Exhaust gas purification device
US7670679B2 (en) * 2006-05-30 2010-03-02 General Electric Company Core-shell ceramic particulate and method of making
JP4175387B2 (en) * 2006-05-31 2008-11-05 トヨタ自動車株式会社 Exhaust gas purification catalyst manufacturing method
JP4938013B2 (en) 2006-07-06 2012-05-23 株式会社キャタラー Oxygen storage material
JP4265626B2 (en) * 2006-07-12 2009-05-20 トヨタ自動車株式会社 Catalyst carrier particles, method for producing the same, and exhaust gas purification catalyst
DE102007020962A1 (en) * 2007-05-04 2008-11-06 Robert Bosch Gmbh Coating of ceramic carriers
JP2008289971A (en) * 2007-05-23 2008-12-04 Toyota Motor Corp Core-shell structure and its manufacturing method, and exhaust gas cleaning catalyst containing the core-shell structure
JP2009045545A (en) * 2007-08-20 2009-03-05 Denso Corp Catalyst structure and catalyst body employing the same
US8187548B2 (en) 2007-10-30 2012-05-29 Mazda Motor Corporation Catalyst-supported particulate filter
JP5034871B2 (en) * 2007-10-30 2012-09-26 マツダ株式会社 Exhaust gas component purification catalyst material and particulate filter with the catalyst material
JP5465843B2 (en) * 2008-05-23 2014-04-09 トヨタ自動車株式会社 Method for producing core-shell structure and exhaust gas-purifying catalyst comprising core-shell structure produced thereby
JP5465842B2 (en) * 2008-05-23 2014-04-09 トヨタ自動車株式会社 Core-shell structure and exhaust gas-purifying catalyst including the core-shell structure
JP5320426B2 (en) * 2011-04-04 2013-10-23 トヨタ自動車株式会社 Exhaust gas purification catalyst and exhaust gas purification device
JP5805986B2 (en) * 2011-04-22 2015-11-10 三井金属鉱業株式会社 Carrier for internal combustion engine exhaust gas purification catalyst
JP2013203639A (en) * 2012-03-29 2013-10-07 Admatechs Co Ltd Complex oxide powder
JP5887574B2 (en) * 2012-08-03 2016-03-16 株式会社ノリタケカンパニーリミテド Co-catalyst material for purification of automobile exhaust gas and method for producing the same
JP6050703B2 (en) * 2013-03-08 2016-12-21 株式会社キャタラー Exhaust gas purification catalyst
BR112018073996A2 (en) * 2016-05-26 2019-02-26 Basf Corporation automotive catalyst composite, exhaust gas treatment system, method for treating an exhaust gas, method for manufacturing an automotive catalyst composite and particulate material
US9914095B1 (en) * 2017-02-08 2018-03-13 Ford Global Technologies, Llc Catalyst for automotive emissions control
WO2019043346A1 (en) 2017-09-01 2019-03-07 Rhodia Operations Cerium- and zirconium-based mixed oxide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003277060A (en) * 2002-03-22 2003-10-02 Toyota Motor Corp Cerium-zirconium compound metallic oxide
JP2004074138A (en) * 2002-06-17 2004-03-11 Toyota Motor Corp Catalyst for exhaust gas purification, and exhaust gas purification method
EP1415956A2 (en) * 2002-10-28 2004-05-06 Toyota Jidosha Kabushiki Kaisha A method for preparing metal oxide particles and an exhaust gas purifying catalyst

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003277060A (en) * 2002-03-22 2003-10-02 Toyota Motor Corp Cerium-zirconium compound metallic oxide
JP2004074138A (en) * 2002-06-17 2004-03-11 Toyota Motor Corp Catalyst for exhaust gas purification, and exhaust gas purification method
EP1415956A2 (en) * 2002-10-28 2004-05-06 Toyota Jidosha Kabushiki Kaisha A method for preparing metal oxide particles and an exhaust gas purifying catalyst

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
A.F. HOLLEMANN, E. WIBERG: "Lehrbuch der Anorganischen Chemie", 1995, W. DE GRUYTER, NEW YORK, XP002350463 *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Also Published As

Publication number Publication date
WO2005102933A2 (en) 2005-11-03
CN1972871A (en) 2007-05-30
JP2005313029A (en) 2005-11-10
EP1771383A2 (en) 2007-04-11
JP4165442B2 (en) 2008-10-15

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