WO2013027867A3 - Exhaust gas purification catalyst - Google Patents

Exhaust gas purification catalyst Download PDF

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Publication number
WO2013027867A3
WO2013027867A3 PCT/JP2012/072088 JP2012072088W WO2013027867A3 WO 2013027867 A3 WO2013027867 A3 WO 2013027867A3 JP 2012072088 W JP2012072088 W JP 2012072088W WO 2013027867 A3 WO2013027867 A3 WO 2013027867A3
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
temperature
noble metal
amount
purification catalyst
Prior art date
Application number
PCT/JP2012/072088
Other languages
French (fr)
Other versions
WO2013027867A2 (en
Inventor
Hirotaka Sone
Masahiko Takeuchi
Seiji Okawara
Takamitsu Asanuma
Norio Ishikawa
Original Assignee
Kabushiki Kaisha Toyota Jidoshokki
Toyota Jidosha Kabushiki Kaisha
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 Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha filed Critical Kabushiki Kaisha Toyota Jidoshokki
Publication of WO2013027867A2 publication Critical patent/WO2013027867A2/en
Publication of WO2013027867A3 publication Critical patent/WO2013027867A3/en

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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • 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
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group 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
    • 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
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • 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
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • 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
    • B01J37/0244—Coatings comprising several layers
    • 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
    • B01D2255/1021—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
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/903—Multi-zoned catalysts
    • B01D2255/9032—Two zones

Landscapes

  • 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)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

In an exhaust gas purification catalyst comprising noble metal, the amount of noble metal carried in an upstream portion of the carrier substrate of the catalyst on an upstream side in a direction of flow of exhaust gas is larger than the amount of noble metal carried in a downstream portion of the carrier substrate on a downstream side in the direction of flow of the exhaust gas. The amount of noble metal carried in the downstream portion is not less than an amount required for saturation of a purification rate of the exhaust gas in the downstream portion at the temperature of the exhaust gas flowing into the downstream portion. The temperature is the temperature of the exhaust gas when the exhaust gas having flowed into the upstream portion at a temperature of 168° C flows out of the upstream portion.
PCT/JP2012/072088 2011-08-24 2012-08-24 Exhaust gas purification catalyst WO2013027867A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011182590A JP2013044283A (en) 2011-08-24 2011-08-24 Exhaust gas purification catalyst
JP2011-182590 2011-08-24

Publications (2)

Publication Number Publication Date
WO2013027867A2 WO2013027867A2 (en) 2013-02-28
WO2013027867A3 true WO2013027867A3 (en) 2013-04-18

Family

ID=46881119

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/072088 WO2013027867A2 (en) 2011-08-24 2012-08-24 Exhaust gas purification catalyst

Country Status (2)

Country Link
JP (1) JP2013044283A (en)
WO (1) WO2013027867A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101534933B1 (en) * 2013-10-24 2015-07-07 현대자동차주식회사 Operating System for Catalyst of Vehicle and Method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003200061A (en) * 2001-11-02 2003-07-15 Nissan Motor Co Ltd Exhaust gas purifying catalyst and exhaust gas purifying device
US20090151341A1 (en) * 2007-12-14 2009-06-18 Hyundai Motor Company Apparatus for reducing nitrogen oxide contained in exhaust gas
EP2072121A1 (en) * 2006-09-26 2009-06-24 Cataler Corporation Exhaust gas purifying catalyst
JP2009275559A (en) * 2008-05-13 2009-11-26 Toyota Motor Corp Electric heating type catalyst device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06205983A (en) * 1993-01-07 1994-07-26 Toyota Motor Corp Exhaust gas purifying catalyst
JPH10202105A (en) 1997-01-22 1998-08-04 Toyota Motor Corp Oxidation catalyst for diesel exhaust gas
JP2000328927A (en) * 1999-05-20 2000-11-28 Nissan Motor Co Ltd Exhaust gas purifying catalyst, its manufacturing method, and exhaust gas control system
JP2010222991A (en) * 2009-03-19 2010-10-07 Honda Motor Co Ltd Exhaust emission control device for internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003200061A (en) * 2001-11-02 2003-07-15 Nissan Motor Co Ltd Exhaust gas purifying catalyst and exhaust gas purifying device
EP2072121A1 (en) * 2006-09-26 2009-06-24 Cataler Corporation Exhaust gas purifying catalyst
US20090151341A1 (en) * 2007-12-14 2009-06-18 Hyundai Motor Company Apparatus for reducing nitrogen oxide contained in exhaust gas
JP2009275559A (en) * 2008-05-13 2009-11-26 Toyota Motor Corp Electric heating type catalyst device

Also Published As

Publication number Publication date
WO2013027867A2 (en) 2013-02-28
JP2013044283A (en) 2013-03-04

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