WO2009028721A3 - Exhaust gas purifying catalyst - Google Patents

Exhaust gas purifying catalyst Download PDF

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Publication number
WO2009028721A3
WO2009028721A3 PCT/JP2008/065801 JP2008065801W WO2009028721A3 WO 2009028721 A3 WO2009028721 A3 WO 2009028721A3 JP 2008065801 W JP2008065801 W JP 2008065801W WO 2009028721 A3 WO2009028721 A3 WO 2009028721A3
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
gas purifying
purifying catalyst
yttria
particles
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.)
Ceased
Application number
PCT/JP2008/065801
Other languages
French (fr)
Other versions
WO2009028721A2 (en
Inventor
Naoto Miyoshi
Yoshiteru Yazawa
Kunio Esaki
Hiroto Imai
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.)
Cataler Corp
Toyota Motor Corp
Original Assignee
Cataler Corp
Toyota Motor Corp
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 Cataler Corp, Toyota Motor Corp filed Critical Cataler Corp
Priority to US12/674,956 priority Critical patent/US20110118113A1/en
Priority to CN200880104875A priority patent/CN101790417A/en
Priority to EP08828422A priority patent/EP2188050A2/en
Publication of WO2009028721A2 publication Critical patent/WO2009028721A2/en
Publication of WO2009028721A3 publication Critical patent/WO2009028721A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0242—Coating followed by impregnation
    • 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
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0248—Coatings comprising impregnated particles
    • 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
    • B01D2255/206—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
    • B01D2255/207—Transition metals
    • B01D2255/20715—Zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/91—NOx-storage component incorporated in the 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/19—Catalysts containing parts with different compositions
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Disclosed is an exhaust gas purifying catalyst, including Rh/Y-ZrO2 particles obtained by supporting Rh on zirconia support particles which contain yttria, wherein yttria is contained in an amount of 2~9 mol% in the support particles. The exhaust gas purifying catalyst exhibits a superior high-temperature durability because the zirconia support can resist heat, thereby particularly increasing the structure retaining power and the thermal stability of Rh.
PCT/JP2008/065801 2007-08-27 2008-08-27 Exhaust gas purifying catalyst Ceased WO2009028721A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/674,956 US20110118113A1 (en) 2007-08-27 2008-08-27 Exhaust gas purifying catalyst
CN200880104875A CN101790417A (en) 2007-08-27 2008-08-27 Exhaust gas purifying catalyst
EP08828422A EP2188050A2 (en) 2007-08-27 2008-08-27 Exhaust gas purifying catalyst

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-219789 2007-08-27
JP2007219789A JP2009050791A (en) 2007-08-27 2007-08-27 Exhaust gas purification catalyst

Publications (2)

Publication Number Publication Date
WO2009028721A2 WO2009028721A2 (en) 2009-03-05
WO2009028721A3 true WO2009028721A3 (en) 2009-08-06

Family

ID=40387981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/065801 Ceased WO2009028721A2 (en) 2007-08-27 2008-08-27 Exhaust gas purifying catalyst

Country Status (6)

Country Link
US (1) US20110118113A1 (en)
EP (1) EP2188050A2 (en)
JP (1) JP2009050791A (en)
KR (1) KR20100037164A (en)
CN (1) CN101790417A (en)
WO (1) WO2009028721A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014070857A2 (en) * 2012-10-31 2014-05-08 Thermochem Recovery International, Inc. System and method for processing raw gas with in-situ catalyst regeneration
JP6077367B2 (en) * 2013-04-02 2017-02-08 株式会社キャタラー Exhaust gas purification catalyst
CN105813734B (en) * 2013-12-09 2019-10-18 株式会社科特拉 Catalyst for Exhaust Purification
CN106000397B (en) * 2016-06-08 2018-07-27 济南大学 A kind of preparation method and products obtained therefrom of list Rh three-way catalysts
US10500562B2 (en) * 2018-04-05 2019-12-10 Magnesium Elektron Ltd. Zirconia-based compositions for use in passive NOx adsorber devices
KR102286494B1 (en) * 2019-11-22 2021-08-05 서울과학기술대학교 산학협력단 Catalytic Converter for Toxic Gas Processing

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414573A1 (en) * 1989-08-25 1991-02-27 Tonen Corporation Steam reforming catalyst for hydrocarbon and method for manufacturing the same
EP0443765A1 (en) * 1990-02-22 1991-08-28 Engelhard Corporation Catalyst composition containing segregated platinum and rhodium components
US5232890A (en) * 1990-01-02 1993-08-03 Ganguli Partha S Precious metal catalysts with oxygen-ion conducting support
US5814576A (en) * 1995-11-27 1998-09-29 Nissan Motor Co., Ltd. Catalyst for purifying exhaust gas and method of producing same
JP2000070717A (en) * 1998-08-28 2000-03-07 Toyota Central Res & Dev Lab Inc Exhaust gas purification catalyst and catalyst carrier
EP1036767A1 (en) * 1999-03-15 2000-09-20 Kabushiki Kaisha Toyota Chuo Kenkyusho Titania-zirconia powder, process for producing the same and catalyst material comprising the powder
EP1036591A1 (en) * 1997-12-08 2000-09-20 Toyota Jidosha Kabushiki Kaisha Catalyst for purifying exhaust gas and process for purifying exhaust gas
US6878354B1 (en) * 1999-09-03 2005-04-12 Mitsubishi Denki Kabushiki Kaisha Catalyst and process for exhaust purification

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1213875A (en) * 1982-11-29 1986-11-12 Shigeo Uno Catalyst for catalytic combustion
US5015617A (en) * 1988-04-14 1991-05-14 Nippon Shokubai Kagaku Kogyo Co., Ltd. Catalyst for purifying exhaust gas and method for production thereof
US5254519A (en) * 1990-02-22 1993-10-19 Engelhard Corporation Catalyst composition containing platinum and rhodium components
US6294140B1 (en) * 1999-04-23 2001-09-25 Degussa Ag Layered noble metal-containing exhaust gas catalyst and its preparation
US20020032123A1 (en) * 2000-02-23 2002-03-14 Ford Global Technologies, Inc. Exhaust gas catalyst and method of manufacturing same
JP4329432B2 (en) * 2003-07-15 2009-09-09 トヨタ自動車株式会社 Exhaust gas purification catalyst
US7758834B2 (en) * 2006-08-21 2010-07-20 Basf Corporation Layered catalyst composite
US7517510B2 (en) * 2006-08-21 2009-04-14 Basf Catalysts Llc Layered catalyst composite

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414573A1 (en) * 1989-08-25 1991-02-27 Tonen Corporation Steam reforming catalyst for hydrocarbon and method for manufacturing the same
US5232890A (en) * 1990-01-02 1993-08-03 Ganguli Partha S Precious metal catalysts with oxygen-ion conducting support
US5275997A (en) * 1990-01-02 1994-01-04 Pcp Consulting And Research, Inc. Precious metal catalysts utilizing composites of oxygen-ion conducting and inert support materials
EP0443765A1 (en) * 1990-02-22 1991-08-28 Engelhard Corporation Catalyst composition containing segregated platinum and rhodium components
US5814576A (en) * 1995-11-27 1998-09-29 Nissan Motor Co., Ltd. Catalyst for purifying exhaust gas and method of producing same
EP1036591A1 (en) * 1997-12-08 2000-09-20 Toyota Jidosha Kabushiki Kaisha Catalyst for purifying exhaust gas and process for purifying exhaust gas
JP2000070717A (en) * 1998-08-28 2000-03-07 Toyota Central Res & Dev Lab Inc Exhaust gas purification catalyst and catalyst carrier
EP1036767A1 (en) * 1999-03-15 2000-09-20 Kabushiki Kaisha Toyota Chuo Kenkyusho Titania-zirconia powder, process for producing the same and catalyst material comprising the powder
US6878354B1 (en) * 1999-09-03 2005-04-12 Mitsubishi Denki Kabushiki Kaisha Catalyst and process for exhaust purification

Also Published As

Publication number Publication date
EP2188050A2 (en) 2010-05-26
WO2009028721A2 (en) 2009-03-05
US20110118113A1 (en) 2011-05-19
JP2009050791A (en) 2009-03-12
KR20100037164A (en) 2010-04-08
CN101790417A (en) 2010-07-28

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