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WO2009001902A1 - 触媒担体及び排ガス浄化触媒 - Google Patents

触媒担体及び排ガス浄化触媒 Download PDF

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Publication number
WO2009001902A1
WO2009001902A1 PCT/JP2008/061661 JP2008061661W WO2009001902A1 WO 2009001902 A1 WO2009001902 A1 WO 2009001902A1 JP 2008061661 W JP2008061661 W JP 2008061661W WO 2009001902 A1 WO2009001902 A1 WO 2009001902A1
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Prior art keywords
fine particles
particles
catalyst
rare earth
earth element
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Ceased
Application number
PCT/JP2008/061661
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English (en)
French (fr)
Inventor
Takeshi Nobukawa
Naoto Miyoshi
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Toyota Motor Corp
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Toyota Motor Corp
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Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to CN2008800215383A priority Critical patent/CN101687177B/zh
Priority to US12/665,108 priority patent/US20100190640A1/en
Priority to EP20080777626 priority patent/EP2177265A4/en
Priority to JP2009520638A priority patent/JP5018882B2/ja
Publication of WO2009001902A1 publication Critical patent/WO2009001902A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • 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
    • B01J35/391—Physical properties of the active metal ingredient
    • B01J35/393—Metal or metal oxide crystallite size
    • 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
    • B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • B01J35/45—Nanoparticles
    • 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
    • B01J37/03—Precipitation; Co-precipitation
    • B01J37/031—Precipitation
    • 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
    • B01J37/04—Mixing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B01D2255/2042—Barium
    • 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
    • B01D2255/2063—Lanthanum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2092—Aluminium
    • 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
    • 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
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • 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
    • B01J2235/00—Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
    • B01J2235/15—X-ray diffraction
    • 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
    • B01J2235/00—Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
    • B01J2235/30—Scanning electron microscopy; Transmission electron microscopy
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/615—100-500 m2/g
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (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 After Treatment (AREA)

Abstract

　触媒担体１０は、希土類元素酸化物の一次粒子よりなる希土類元素酸化物微粒子（セリア微粒子１１）と、アルミナの一次粒子よりなるアルミナ微粒子１２と、バリウム化合物の一次粒子よりなるバリウム化合物微粒子１３とが互いに混合してなる。希土類元素酸化物微粒子の一次粒子径は５ｎｍ以下であり、バリウム化合物微粒子１３の一次粒子径は１０ｎｍ以下である。この触媒担体１０のうち実質的に希土類元素酸化物微粒子上に白金微粒子２０が担持されている。酸化触媒としての白金及びＮＯｘ吸蔵材としてのバリウムの粒成長をより確実に抑制することができる。
PCT/JP2008/061661 2007-06-27 2008-06-26 触媒担体及び排ガス浄化触媒 Ceased WO2009001902A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2008800215383A CN101687177B (zh) 2007-06-27 2008-06-26 催化剂载体和排气净化催化剂
US12/665,108 US20100190640A1 (en) 2007-06-27 2008-06-26 Catalytic support and exhaust-gas converting catalyst (as amended)
EP20080777626 EP2177265A4 (en) 2007-06-27 2008-06-26 CATALYST SUPPORT AND EMISSION CONTROL CATALYST
JP2009520638A JP5018882B2 (ja) 2007-06-27 2008-06-26 触媒担体及び排ガス浄化触媒

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-169274 2007-06-27
JP2007169274 2007-06-27

Publications (1)

Publication Number Publication Date
WO2009001902A1 true WO2009001902A1 (ja) 2008-12-31

Family

ID=40185715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/061661 Ceased WO2009001902A1 (ja) 2007-06-27 2008-06-26 触媒担体及び排ガス浄化触媒

Country Status (5)

Country Link
US (1) US20100190640A1 (ja)
EP (1) EP2177265A4 (ja)
JP (1) JP5018882B2 (ja)
CN (1) CN101687177B (ja)
WO (1) WO2009001902A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013248570A (ja) * 2012-05-31 2013-12-12 Toyota Central R&D Labs Inc 排ガス浄化用触媒、その製造方法及びそれを用いた排ガス浄化方法
JP2020022950A (ja) * 2018-06-14 2020-02-13 パシフィック インダストリアル デベロップメント コーポレイション ＮＯｘおよび／またはＳＯｘを捕捉するためのナノ希土類酸化物ドープ担体
US10906816B2 (en) 2016-07-29 2021-02-02 Sumitomo Chemical Company, Limited Alumina and method for producing automotive catalyst using same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9687811B2 (en) * 2014-03-21 2017-06-27 SDCmaterials, Inc. Compositions for passive NOx adsorption (PNA) systems and methods of making and using same
US10828602B2 (en) 2015-10-27 2020-11-10 Cataler Corporation Exhaust gas purifying catalyst and method for producing same, and exhaust gas purification device using same
JP2018171599A (ja) 2017-03-31 2018-11-08 トヨタ自動車株式会社 排ガス浄化触媒

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6111147A (ja) 1984-06-14 1986-01-18 エンゲルハード・コーポレーシヨン スリー・ウエイ触媒およびその製造方法
JPH0448931A (ja) * 1990-06-15 1992-02-18 Matsushita Electric Ind Co Ltd 触媒被覆層の形成方法
JP2006224086A (ja) * 2005-01-20 2006-08-31 Toyota Motor Corp 触媒担体及びその製造方法、並びに排ガス浄化触媒

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Publication number Priority date Publication date Assignee Title
JPS6111147A (ja) 1984-06-14 1986-01-18 エンゲルハード・コーポレーシヨン スリー・ウエイ触媒およびその製造方法
JPH0448931A (ja) * 1990-06-15 1992-02-18 Matsushita Electric Ind Co Ltd 触媒被覆層の形成方法
JP2006224086A (ja) * 2005-01-20 2006-08-31 Toyota Motor Corp 触媒担体及びその製造方法、並びに排ガス浄化触媒

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Title
See also references of EP2177265A4

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013248570A (ja) * 2012-05-31 2013-12-12 Toyota Central R&D Labs Inc 排ガス浄化用触媒、その製造方法及びそれを用いた排ガス浄化方法
US10906816B2 (en) 2016-07-29 2021-02-02 Sumitomo Chemical Company, Limited Alumina and method for producing automotive catalyst using same
JP2020022950A (ja) * 2018-06-14 2020-02-13 パシフィック インダストリアル デベロップメント コーポレイション ＮＯｘおよび／またはＳＯｘを捕捉するためのナノ希土類酸化物ドープ担体
JP7527100B2 (ja) 2018-06-14 2024-08-02 パシフィック インダストリアル デベロップメント コーポレイション ＮＯｘおよび／またはＳＯｘを捕捉するためのナノ希土類酸化物ドープ担体

Also Published As

Publication number Publication date
JP5018882B2 (ja) 2012-09-05
US20100190640A1 (en) 2010-07-29
CN101687177A (zh) 2010-03-31
CN101687177B (zh) 2012-08-29
EP2177265A4 (en) 2011-07-20
EP2177265A1 (en) 2010-04-21
JPWO2009001902A1 (ja) 2010-08-26

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