KR960037117A - 배기가스 정화용 촉매 및 그 제조방법 - Google Patents

배기가스 정화용 촉매 및 그 제조방법 Download PDF

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KR960037117A
KR960037117A KR1019960013321A KR19960013321A KR960037117A KR 960037117 A KR960037117 A KR 960037117A KR 1019960013321 A KR1019960013321 A KR 1019960013321A KR 19960013321 A KR19960013321 A KR 19960013321A KR 960037117 A KR960037117 A KR 960037117A
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catalyst
layer
exhaust gas
purification
metal
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KR1019960013321A
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KR100388394B1 (ko
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다카히로 구로카와
아키히데 다카미
히데하루 이와쿠니
마코토 교고쿠
겐지 오카모토
히로스케 스미다
겐이치 야마모토
히로시 무라카미
히로시 야마다
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와다 요시히로
마츠다 가부시키가이샤
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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
    • 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
    • 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
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • 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
    • B01J23/58—Platinum group metals with alkali- or alkaline earth 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
    • B01J23/54—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
    • 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
    • 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
    • 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
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0835—Hydrocarbons
    • 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
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen 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
    • B01D2255/902—Multilayered catalyst
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

본 발명은 배기가스 정화용 촉매에 함유한 Ba나 La가 배기가스중에 S나 H2O에 의해 피독되는 것을 방지하는 것으로써, Ba 및 La 중 적어도 한쪽을 함유한 제1층이 내측에, 배기가스중의 수분을 흡착하는 제올라이트를 함유한 제2층이 외측이 되도록, 이 양 층을 담체에 적층상태로 담지시킨 것이다.

Description

배기가스 정화용 촉매 및 그 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명에 의한 베이스코팅량과 오버코팅량의 비율이 배기가스 정화특성에 미치는 영향을 본 그래프도.

Claims (12)

  1. 배기가스를 정화하기 위한 촉매금속을 가진 촉매층이 담체에 담지되어 있는 배기가스 정화용 촉매에 있어서, 상기 촉매층이 Ba 및 La 중 적어도 한쪽을 함유한 제1층과, 배기가스중의 수분을 흡착하는 흡수제를 함유한 제2층을 구비하고, 상기 제1층이 내측에 배치되며, 상기 제2층이 외측에 배치되어 있고, 상기 제1층 및 제 2층의 적어도 한쪽에 상기 촉매금속이 배치되어 있는 것을 특징으로 하는 배기가스 정화용 촉매.
  2. 제1항에 있어서, 상기 흡수제가 결정성 금속함유 실리케이트로 이루어진 것을 특징으로 하는 배기가스 정화용 촉매.
  3. 제1항 또는 제2항에 있어서, 상기 촉매금속이 귀금속이며, 또 상기 제2층에 배치되어 있는 것을 특징으로 하는 배기가스 정화용 촉매.
  4. 제3항에 있어서, 상기 귀금속이 Pt 및 Rh인 것을 특징으로 하는 배기가스 정화용 촉매.
  5. 제4항에 있어서, 상기 제1층 및 제2층 중 적어도 한쪽이 세륨산화물을 함유한것을 특징으로 하는 배기가스 정화용 촉매.
  6. 제5항에 있어서, 상기 제1층이 Pd 및 알루미나를 함유한 것을 특징으로 하는 배기가스 정화용 촉매.
  7. 제6항에 있어서,상기 제2층의 전체 촉매층에 점하는 중량비율이 3/40~34/40인 것을 특징으로 하는 배기가스 정화용 촉매.
  8. 제6항에 있어서, 상기 제1층이 Pt를 추가로 함유한 것을 특징으로 하는 배기가스 정화용 촉매.
  9. 배기가스를 정화하기 위한 촉매금속을 가진 촉매층이 담체에 형성되어 있는 배기가스 정화용 촉매에 있어서, 상기 촉매층이 Ba가 담지된 결정성 금속함유 실리케이트를 함유한 제1층과, 촉매금속을 함유한 제2층을 구비하며, 상기 제1층이 외측에 배치되고, 상기 제2층이 내측에 배치되어 있는 것을 특징으로 하는 배기가스 정화용 촉매.
  10. 제6항 또는 제7항에 있어서, 상기 Ba양이 전체 촉매층의 7~45wt%/인 것을 특징으로 하는 배기가스 정화용 촉매.
  11. 제6항 또는 제7항에 있어서, 상기 Ba양이 전체 촉매층의 10~30wt%인 것을 특징으로 하는 배기가스 정화용 촉매.
  12. 배기가스를 정화하기 위한 촉매금속을 가진 배기가스 정화용 촉매의 제조방법에 잇어서, 담체상에 Ba를 함유한 촉매층을 형성한 후, 상기 촉매층위에 결정성 금속함유 실리케이트를 코팅하는 것을 특징으로 하는 배기가스 정화용 촉매.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960013321A 1995-04-28 1996-04-27 배기가스정화용촉매및그제조방법 KR100388394B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP95-104498 1995-04-28
JP10449895 1995-04-28
JP96-077821 1996-03-29
JP07782196A JP3799651B2 (ja) 1995-04-28 1996-03-29 排気ガス浄化用触媒

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KR960037117A true KR960037117A (ko) 1996-11-19
KR100388394B1 KR100388394B1 (ko) 2003-09-19

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JP (1) JP3799651B2 (ko)
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DE (1) DE19617123B4 (ko)

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3799651B2 (ja) * 1995-04-28 2006-07-19 マツダ株式会社 排気ガス浄化用触媒
DE19726322A1 (de) * 1997-06-20 1998-12-24 Degussa Abgasreinigungskatalysator für Verbrennungsmotoren mit zwei katalytisch aktiven Schichten auf einem Tragkörper
US6348430B1 (en) * 1997-06-20 2002-02-19 Degussa Ag Exhaust gas treatment catalyst for internal combustion engines with two catalytically active layers on a carrier structure
JP3924946B2 (ja) * 1997-09-25 2007-06-06 マツダ株式会社 排気ガス浄化材
JP3688871B2 (ja) * 1997-11-20 2005-08-31 ダイハツ工業株式会社 排気ガス浄化用触媒
US6221804B1 (en) * 1998-01-27 2001-04-24 Mazda Motor Corporation Catalyst for purifying exhaust gas and manufacturing method thereof
JP2000073817A (ja) * 1998-08-28 2000-03-07 Toyota Motor Corp 内燃機関の排気浄化装置
JP3370957B2 (ja) 1998-09-18 2003-01-27 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE19847008A1 (de) * 1998-10-13 2000-04-20 Degussa Stickoxid-Speicherkatalysator
DE19854794A1 (de) * 1998-11-27 2000-05-31 Degussa Katalysator für die Reinigung der Abgase eines Dieselmotors
JP2000176298A (ja) * 1998-12-11 2000-06-27 Mazda Motor Corp 排気ガス浄化用触媒及びその製造方法
JP4484978B2 (ja) * 1998-12-11 2010-06-16 三井金属鉱業株式会社 内燃機関排気ガス浄化用助触媒の製造方法
WO2000043109A1 (fr) * 1999-01-19 2000-07-27 Yataro Ichikawa Procede de traitement des gaz d'echappement et son dispositif, et vehicule equipe dudit dispositif
DE19914814C1 (de) * 1999-03-31 2000-12-14 Siemens Ag Rekombinationseinrichtung und Verfahren zur katalytischen Rekombination von Wasserstoff und/oder Kohlenmonoxid mit Sauerstoff in einem Gasgemisch
US6375910B1 (en) 1999-04-02 2002-04-23 Engelhard Corporation Multi-zoned catalytic trap and methods of making and using the same
US6497848B1 (en) 1999-04-02 2002-12-24 Engelhard Corporation Catalytic trap with potassium component and method of using the same
US6294140B1 (en) 1999-04-23 2001-09-25 Degussa Ag Layered noble metal-containing exhaust gas catalyst and its preparation
US6103207A (en) * 1999-04-26 2000-08-15 Ford Global Technologies, Inc. Treating diesel exhaust with a catalytic particulate mixture
US6261989B1 (en) 1999-05-19 2001-07-17 Daihatsu Motor Co., Ltd. Catalytic converter for cleaning exhaust gas
TW500625B (en) 1999-06-04 2002-09-01 Nippon Oxygen Co Ltd Gas treatment agent, its production thereof, gas refining method, gas refiner and gas refining apparatus
US6296822B1 (en) * 2000-03-29 2001-10-02 Ford Global Technologies, Inc Process for manufacturing nox traps with improved sulfur tolerance
FI118326B (fi) 2000-04-10 2007-10-15 Ecocat Oy Adsorbenttikatalyytti
JP4703818B2 (ja) 2000-06-20 2011-06-15 株式会社アイシーティー 排気ガス浄化用触媒および排気ガス浄化方法
EP1419810B1 (en) * 2000-06-22 2007-02-07 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Exhaust gas purifying catalyst
JP3704279B2 (ja) * 2000-07-18 2005-10-12 ダイハツ工業株式会社 排ガス浄化用触媒
JP3797081B2 (ja) * 2000-09-08 2006-07-12 トヨタ自動車株式会社 吸収還元型ＮＯｘ浄化用触媒
KR100389120B1 (ko) * 2000-09-08 2003-06-25 한국과학기술원 자동차 배기가스 정화용 촉매 및 그의 제조방법
JP4144174B2 (ja) * 2000-10-25 2008-09-03 トヨタ自動車株式会社 排ガス浄化装置
JP4645786B2 (ja) * 2001-06-08 2011-03-09 三菱自動車工業株式会社 排ガス浄化用触媒
US7022644B2 (en) 2002-02-20 2006-04-04 Engelhard Corporation Hydrogen sulfide-suppressing catalyst compositions
JP3795871B2 (ja) * 2003-03-20 2006-07-12 株式会社キャタラー 排ガス浄化用触媒システム
US20040254061A1 (en) * 2003-06-12 2004-12-16 Danan Dou Diesel exhaust emissions control device and methods of making thereof
JP3812567B2 (ja) * 2003-12-01 2006-08-23 マツダ株式会社 排気ガス浄化用触媒材料、及びその製造方法
JP3912377B2 (ja) 2003-12-25 2007-05-09 日産自動車株式会社 排ガス浄化用触媒粉末の製造方法
JP4507717B2 (ja) * 2004-01-16 2010-07-21 マツダ株式会社 排気ガス浄化用触媒
JP4547930B2 (ja) 2004-02-17 2010-09-22 日産自動車株式会社 触媒、触媒の調製方法及び排ガス浄化用触媒
JP4547935B2 (ja) 2004-02-24 2010-09-22 日産自動車株式会社 排ガス浄化用触媒、排ガス浄化触媒、及び触媒の製造方法
US20050202966A1 (en) * 2004-03-11 2005-09-15 W.C. Heraeus Gmbh Catalyst for the decomposition of N2O in the Ostwald process
DE102004024026A1 (de) * 2004-03-11 2005-09-29 W.C. Heraeus Gmbh Katalysator zur N2O-Zersetzung beim Ostwaldprozess
JP4513372B2 (ja) * 2004-03-23 2010-07-28 日産自動車株式会社 排ガス浄化用触媒及び排ガス浄化触媒
JP4513384B2 (ja) 2004-03-31 2010-07-28 日産自動車株式会社 高耐熱性排ガス浄化用触媒及びその製造方法
FR2872212B1 (fr) * 2004-06-23 2006-11-03 Peugeot Citroen Automobiles Sa Systeme d'evaluation de l'etat de charge de moyens de depollution d'une ligne d'echappement
WO2006006046A2 (en) * 2004-07-08 2006-01-19 Nissan Motor Co., Ltd. Catalyst, exhaust gas purification catalyst, and method for manufacturing same
US7585810B2 (en) * 2004-09-01 2009-09-08 Umicore Ag & Co. Kg Method for partial oxidation of hydrocarbons, catalyst member therefor and method of manufacture
US7923407B2 (en) * 2006-03-16 2011-04-12 Ict Co., Ltd. Catalyst for exhaust gas purification, production method therefor, and method for purification of exhaust gas using the catalyst
KR100752372B1 (ko) * 2006-04-10 2007-08-27 희성엥겔하드주식회사 황화수소 저감을 위한 제오라이트를 포함한 배기가스정화용 촉매조성물
US7749472B2 (en) * 2006-08-14 2010-07-06 Basf Corporation Phosgard, a new way to improve poison resistance in three-way catalyst applications
KR100809661B1 (ko) * 2006-10-04 2008-03-05 희성촉매 주식회사 Ｎｏ２ 생성 억제 촉매
EP2213371B1 (en) * 2007-10-29 2015-06-10 Umicore Shokubai Japan Co., Ltd. Method for the catalytic removal of nitrogen oxides
US20090175773A1 (en) * 2008-01-08 2009-07-09 Chen Shau-Lin F Multilayered Catalyst Compositions
WO2009118865A1 (ja) * 2008-03-27 2009-10-01 イビデン株式会社 ハニカム構造体
DE102008018520A1 (de) * 2008-04-12 2009-10-15 Man Nutzfahrzeuge Aktiengesellschaft Schwefelresistentes Abgasnachbehandlungssystem zur Vermeidung von Stickoxiden
DE102008018519A1 (de) * 2008-04-12 2009-10-15 Man Nutzfahrzeuge Ag Schwefelresistentes Abgasnachbehandlungssystem zur Oxidation von NO
US8475752B2 (en) * 2008-06-27 2013-07-02 Basf Corporation NOx adsorber catalyst with superior low temperature performance
EP2177256A1 (en) * 2008-10-15 2010-04-21 Linde AG Catalyst containing platinum and palladium for the selective reduction of NOx with hydrogen (H2-SCR)
CN102256701B (zh) * 2008-12-19 2014-04-09 株式会社科特拉 废气净化用催化剂
US9440192B2 (en) * 2009-01-16 2016-09-13 Basf Corporation Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems
EP2579985A4 (en) * 2010-06-10 2015-01-21 Basf Se NOX MEMORY CATALYST WITH IMPROVED HYDROCARBON FLUORATIVE ACTIVITY
GB201021649D0 (en) * 2010-12-21 2011-02-02 Johnson Matthey Plc NOx Absorber catalyst
JP5938819B2 (ja) 2011-10-06 2016-06-22 ジョンソン、マッセイ、パブリック、リミテッド、カンパニーＪｏｈｎｓｏｎ Ｍａｔｔｈｅｙ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ 排気ガス処理用酸化触媒
KR101950545B1 (ko) 2012-04-06 2019-02-20 바스프 코포레이션 탄화수소 저장 기능을 갖는 희박 NOx 트랩 디젤 산화 촉매
JP5954260B2 (ja) * 2013-05-27 2016-07-20 マツダ株式会社 排気ガス浄化用触媒及びその製造方法
JP5954259B2 (ja) * 2013-05-27 2016-07-20 マツダ株式会社 排気ガス浄化用触媒の製造方法
JP5949662B2 (ja) * 2013-05-27 2016-07-13 マツダ株式会社 排気ガス浄化用触媒及びその製造方法
KR102483435B1 (ko) 2014-12-08 2023-01-02 바스프 코포레이션 배기 시스템용 아산화질소 제거 촉매
CN107983366A (zh) * 2016-10-26 2018-05-04 中国科学院大连化学物理研究所 一种耐水热耐硫整体结构燃烧催化剂及其制备方法
JP2020163342A (ja) * 2019-03-29 2020-10-08 株式会社キャタラー 排ガス浄化触媒装置
EP3824988A1 (en) * 2019-11-20 2021-05-26 UMICORE AG & Co. KG Catalyst for reducing nitrogen oxides
JP7317787B2 (ja) * 2020-10-19 2023-07-31 トヨタ自動車株式会社 排ガス浄化装置
US20240157348A1 (en) * 2021-03-18 2024-05-16 Basf Corporation System for the treatment of an exhaust gas of a diesel combustion engine

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7400525A (ko) * 1973-01-27 1974-07-30
JPH0368448A (ja) * 1989-08-09 1991-03-25 Toyota Motor Corp 排気ガス浄化用触媒
US5254519A (en) * 1990-02-22 1993-10-19 Engelhard Corporation Catalyst composition containing platinum and rhodium components
US5057483A (en) * 1990-02-22 1991-10-15 Engelhard Corporation Catalyst composition containing segregated platinum and rhodium components
JPH04131137A (ja) * 1990-09-19 1992-05-01 Matsushita Electric Ind Co Ltd 排気浄化用触媒
CA2064977C (en) * 1991-04-05 1998-09-22 Eiichi Shiraishi Catalyst for purifying exhaust gas
JP3098083B2 (ja) * 1991-12-26 2000-10-10 マツダ株式会社 排気ガス浄化用触媒
JP3145175B2 (ja) * 1992-03-31 2001-03-12 三井金属鉱業株式会社 排ガス浄化用触媒及びその製造方法
US5376610A (en) * 1992-04-15 1994-12-27 Nissan Motor Co., Ltd. Catalyst for exhaust gas purification and method for exhaust gas purification
US5571763A (en) * 1992-06-02 1996-11-05 Mazda Motor Corporation Exhaust gas purification system and catalyst therefor
AU677600B2 (en) * 1992-09-28 1997-05-01 Asec Manufacturing Company Palladium-containing three-way automotive catalysts having unique support
JP2618319B2 (ja) * 1992-12-14 1997-06-11 財団法人石油産業活性化センター 窒素酸化物接触還元用触媒構造体
JPH06190282A (ja) * 1992-12-25 1994-07-12 Idemitsu Kosan Co Ltd 排気ガス浄化用触媒
JP3375358B2 (ja) * 1993-01-29 2003-02-10 マツダ株式会社 排気ガス浄化用触媒
DE69435061T2 (de) * 1993-06-25 2008-12-18 Basf Catalysts Llc Katalysatorzusammensetzung
JPH0788372A (ja) * 1993-09-24 1995-04-04 Mazda Motor Corp エンジンの排気ガス浄化用触媒およびその製造方法
JPH07108172A (ja) * 1993-10-12 1995-04-25 Toyota Motor Corp 排気ガス浄化用触媒及びその製造方法
JPH08281107A (ja) * 1995-04-11 1996-10-29 Nissan Motor Co Ltd 排気ガス浄化用触媒
JP3799651B2 (ja) * 1995-04-28 2006-07-19 マツダ株式会社 排気ガス浄化用触媒
JP3956437B2 (ja) * 1996-09-26 2007-08-08 マツダ株式会社 排気ガス浄化用触媒

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KR100388394B1 (ko) 2003-09-19
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