ATE191658T1 - Zusammengesetzter katalysator mit schichtstruktur - Google Patents

Zusammengesetzter katalysator mit schichtstruktur

Info

Publication number
ATE191658T1
ATE191658T1 AT95910256T AT95910256T ATE191658T1 AT E191658 T1 ATE191658 T1 AT E191658T1 AT 95910256 T AT95910256 T AT 95910256T AT 95910256 T AT95910256 T AT 95910256T AT E191658 T1 ATE191658 T1 AT E191658T1
Authority
AT
Austria
Prior art keywords
optionally
component
oxygen storage
metal components
layer
Prior art date
Application number
AT95910256T
Other languages
English (en)
Inventor
Shau-Lin Chen
Harold N Rabinowitz
Samuel J Tauster
Original Assignee
Engelhard 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 Engelhard Corp filed Critical Engelhard Corp
Application granted granted Critical
Publication of ATE191658T1 publication Critical patent/ATE191658T1/de

Links

Classifications

    • 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
    • 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
    • B01J23/38—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
    • 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
    • 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)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
AT95910256T 1994-06-17 1995-02-14 Zusammengesetzter katalysator mit schichtstruktur ATE191658T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26162494A 1994-06-17 1994-06-17
PCT/US1995/001849 WO1995035152A1 (en) 1994-06-17 1995-02-14 Layered catalyst composite

Publications (1)

Publication Number Publication Date
ATE191658T1 true ATE191658T1 (de) 2000-04-15

Family

ID=22994126

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95910256T ATE191658T1 (de) 1994-06-17 1995-02-14 Zusammengesetzter katalysator mit schichtstruktur

Country Status (8)

Country Link
EP (1) EP0765189B1 (de)
JP (1) JPH10501737A (de)
KR (1) KR100361417B1 (de)
AT (1) ATE191658T1 (de)
AU (1) AU1843795A (de)
CA (1) CA2192176A1 (de)
DE (2) DE69516281T2 (de)
WO (1) WO1995035152A1 (de)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593647A (en) * 1995-03-31 1997-01-14 General Motors Corporation Catalytic converter having tri precious metal catalysts
US6143691A (en) * 1995-12-27 2000-11-07 Ict Co., Ltd Purifying catalyst for exhaust gas from internal combustion engine
US6087298A (en) * 1996-05-14 2000-07-11 Engelhard Corporation Exhaust gas treatment system
US20010026838A1 (en) 1996-06-21 2001-10-04 Engelhard Corporation Monolithic catalysts and related process for manufacture
US5981427A (en) * 1996-09-04 1999-11-09 Engelhard Corporation Catalyst composition
US5948723A (en) * 1996-09-04 1999-09-07 Engelhard Corporation Layered catalyst composite
US5948377A (en) * 1996-09-04 1999-09-07 Engelhard Corporation Catalyst composition
US5898014A (en) * 1996-09-27 1999-04-27 Engelhard Corporation Catalyst composition containing oxygen storage components
US6248688B1 (en) * 1996-09-27 2001-06-19 Engelhard Corporation Catalyst composition containing oxygen storage components
TW442324B (en) 1996-12-06 2001-06-23 Engelhard Corp Catalytic metal plate
US6921738B2 (en) * 1996-12-06 2005-07-26 Engelhard Corporation Catalytic metal plate
US6165429A (en) * 1997-01-10 2000-12-26 Toyota Jidosha Kabushiki Kaisha Exhaust gas purifying catalyst and exhaust gas purifying method
US5888464A (en) * 1997-04-08 1999-03-30 Engelhard Corporation Catalyst composition containing an intimately combined cerium-zirconium oxide
JP3988202B2 (ja) * 1997-04-11 2007-10-10 日産自動車株式会社 排気ガス浄化用触媒
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
DE19726322A1 (de) * 1997-06-20 1998-12-24 Degussa Abgasreinigungskatalysator für Verbrennungsmotoren mit zwei katalytisch aktiven Schichten auf einem Tragkörper
GB9713428D0 (en) * 1997-06-26 1997-08-27 Johnson Matthey Plc Improvements in emissions control
US6026639A (en) * 1997-11-03 2000-02-22 Engelhard Corporation Apparatus and method for diagnosis of catalyst performance
US6071476A (en) * 1997-11-14 2000-06-06 Motorola, Inc. Exhaust gas sensor
WO1999055459A1 (en) 1998-04-28 1999-11-04 Engelhard Corporation Monolithic catalysts and related process for manufacture
US6110862A (en) * 1998-05-07 2000-08-29 Engelhard Corporation Catalytic material having improved conversion performance
JP2000167404A (ja) * 1998-12-04 2000-06-20 Daihatsu Motor Co Ltd 排気ガス浄化用触媒
US6151547A (en) * 1999-02-24 2000-11-21 Engelhard Corporation Air/fuel ratio manipulation code for optimizing dynamic emissions
AU3520000A (en) 1999-03-09 2000-09-28 Abb Lummus Global Inc. Exhaust gas catalytic converter
EP1046423B8 (de) * 1999-04-23 2007-11-21 Umicore AG & Co. KG Mehrschichtiger Edelmetall-enthaltender Abgaskatalysator und seine Herstellung
US6294140B1 (en) 1999-04-23 2001-09-25 Degussa Ag Layered noble metal-containing exhaust gas catalyst and its preparation
JP3688974B2 (ja) * 1999-05-24 2005-08-31 ダイハツ工業株式会社 排ガス浄化用触媒
JP3688947B2 (ja) * 1999-09-03 2005-08-31 ダイハツ工業株式会社 排気ガス浄化用触媒
JP3688945B2 (ja) * 1999-08-30 2005-08-31 ダイハツ工業株式会社 排気ガス浄化用触媒
US6667017B2 (en) 1999-10-15 2003-12-23 Abb Lummus Global, Inc. Process for removing environmentally harmful compounds
CN1187113C (zh) 1999-10-15 2005-02-02 Abb拉默斯环球有限公司 在负载于筛状结构的催化剂参与下氮的氧化物的转化
CN1259501C (zh) 2000-02-03 2006-06-14 日立自动车株式会社 催化剂的氧气贮存量计算方法及发动机排气净化装置
KR100495643B1 (ko) * 2000-02-25 2005-06-14 닛산 지도우샤 가부시키가이샤 엔진의 배기 정화 장치
US6586254B1 (en) 2000-06-15 2003-07-01 Engelhard Corporation Method and apparatus for accelerated catalyst poisoning and deactivation
US6727097B2 (en) 2000-06-15 2004-04-27 Engelhard Corporation Method and apparatus for accelerated catalyst poisoning and deactivation
US6436363B1 (en) * 2000-08-31 2002-08-20 Engelhard Corporation Process for generating hydrogen-rich gas
JP4573993B2 (ja) 2000-11-09 2010-11-04 日産自動車株式会社 排気ガス浄化用触媒及びその製造方法
JP3721112B2 (ja) * 2001-10-15 2005-11-30 ヴァルティオン テクンニィルリネン ツッツキムスケスクス 窒素酸化物を接触還元する方法とそのための触媒
US6764665B2 (en) 2001-10-26 2004-07-20 Engelhard Corporation Layered catalyst composite
JP3528839B2 (ja) 2002-05-15 2004-05-24 トヨタ自動車株式会社 パティキュレート酸化材及び酸化触媒
FR2841547B1 (fr) * 2002-06-26 2005-05-06 Rhodia Elect & Catalysis Composition a base d'oxyde de zirconium et d'oxydes de cerium, de lanthane et d'une autre terre rare, son procede de preparation et son utilisation comme catalyseur
US20040001781A1 (en) * 2002-06-27 2004-01-01 Engelhard Corporation Multi-zone catalytic converter
KR101225517B1 (ko) 2002-09-13 2013-01-23 존슨 맛쎄이 퍼블릭 리미티드 컴파니 압축 점화 엔진 및 그것을 위한 배기 시스템
US7022646B2 (en) 2003-01-31 2006-04-04 Engelhard Corporation Layered catalyst composite
JP4238056B2 (ja) * 2003-03-31 2009-03-11 三井金属鉱業株式会社 排ガス浄化用層状触媒
DK1703979T3 (da) * 2003-12-18 2011-09-05 Chiyoda Corp Katalysator til fremstilling af syntesegas og fremgangsmåde til fremstilling af syntesegas ved anvendelse heraf
US7795172B2 (en) 2004-06-22 2010-09-14 Basf Corporation Layered exhaust treatment catalyst
KR100551062B1 (ko) 2004-06-29 2006-02-13 삼성에스디아이 주식회사 연료 전지 시스템, 이에 사용되는 개질기 및 그 제조 방법
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
JP4277771B2 (ja) * 2004-09-09 2009-06-10 トヨタ自動車株式会社 排ガス浄化用触媒、排ガス浄化装置および内燃機関を備えるシステム
JP4707672B2 (ja) 2004-10-28 2011-06-22 株式会社キャタラー 排ガス浄化用触媒
CN101282783B (zh) * 2005-10-05 2012-07-25 株式会社卡特勒 废气净化催化剂
KR100781670B1 (ko) 2006-08-16 2007-12-03 희성촉매 주식회사 극소량의 로듐 또는 로듐을 포함하지 않는 내연기관배기가스 정화용 촉매
US8389432B2 (en) 2006-09-25 2013-03-05 Umicore Ag & Co. Kg Structured automotive catalyst with improved thermal ageing stability
JP5037888B2 (ja) 2006-09-26 2012-10-03 株式会社キャタラー 排ガス浄化用触媒
KR20080047950A (ko) 2006-11-27 2008-05-30 나노스텔라 인코포레이티드 팔라듐-금을 포함하는 엔진 배기가스 촉매
US7754171B2 (en) 2007-02-02 2010-07-13 Basf Corporation Multilayered catalyst compositions
DE502007004776D1 (de) * 2007-03-19 2010-09-30 Umicore Ag & Co Kg Palladium-Rhodium Einfachschicht Katalysator
ATE482766T1 (de) * 2007-03-19 2010-10-15 Umicore Ag & Co Kg Doppelschichtiger dreiweg-katalysator
JP5118886B2 (ja) 2007-05-21 2013-01-16 国立大学法人 熊本大学 酸素吸放出材及びそれを含む排ガス浄化用触媒
US7922988B2 (en) * 2007-08-09 2011-04-12 Michel Deeba Multilayered catalyst compositions
US8038951B2 (en) 2007-08-09 2011-10-18 Basf Corporation Catalyst compositions
EP2112339A1 (de) 2008-04-24 2009-10-28 Umicore AG & Co. KG Verfahren und Vorrichtung zur Reinigung von Abgasen eines Verbrennungsmotors
US7981390B2 (en) * 2008-12-23 2011-07-19 Basf Corporation Small engine palladium catalyst article and method of making
US10773209B2 (en) * 2009-02-20 2020-09-15 Basf Corporation Aging-resistant catalyst article for internal combustion engines
CN102414412B (zh) 2009-05-04 2014-12-31 巴斯夫公司 用于稀燃汽油机的改进的twc的稀烃转化
US8246923B2 (en) 2009-05-18 2012-08-21 Umicore Ag & Co. Kg High Pd content diesel oxidation catalysts with improved hydrothermal durability
US8557203B2 (en) 2009-11-03 2013-10-15 Umicore Ag & Co. Kg Architectural diesel oxidation catalyst for enhanced NO2 generator
US8833064B2 (en) * 2009-11-06 2014-09-16 Basf Corporation Small engine layered catalyst article and method of making
US8557204B2 (en) 2010-11-22 2013-10-15 Umicore Ag & Co. Kg Three-way catalyst having an upstream single-layer catalyst
US8323599B2 (en) 2010-11-22 2012-12-04 Umicore Ag & Co. Kg Three-way catalyst having an upstream multi-layer catalyst
DE102011101079B4 (de) 2011-05-10 2020-08-20 Umicore Ag & Co. Kg Verfahren zur Regeneration von NOx-Speicherkatalysatoren von Dieselmotoren mit Niederdruck-AGR
DE102011107692B3 (de) 2011-07-13 2013-01-03 Umicore Ag & Co. Kg Verfahren zur Reaktivierung von Abgasreinigungsanlagen von Dieselmotoren mit Niederdruck-AGR
JP5910275B2 (ja) * 2012-04-18 2016-04-27 マツダ株式会社 排気ガス浄化用触媒
JP5910276B2 (ja) * 2012-04-18 2016-04-27 マツダ株式会社 排気ガス浄化用触媒
CN102979606B (zh) * 2012-11-23 2014-06-25 四川中自尾气净化有限公司 一种摩托车尾气催化转化器及其制备方法
BR102012031208A2 (pt) * 2012-12-07 2014-09-02 Petroleo Brasileiro S.A. - Petrobras Método de preparo de sistemas catalíticos estruturados
WO2015005342A1 (ja) * 2013-07-08 2015-01-15 ユミコア日本触媒株式会社 窒素酸化物除去用触媒
EP3045226B1 (de) 2015-01-19 2024-08-21 Umicore AG & Co. KG Doppelschichtiger Dreiweg-Katalysator mit verbesserter Alterungsstabilität
GB2557673A (en) * 2016-12-15 2018-06-27 Johnson Matthey Plc NOx adsorber catalyst
US11110447B2 (en) * 2017-12-08 2021-09-07 Johnson Matthey (shanghai) Chemicals Co., Ltd. Three-zone two-layer TWC catalyst in gasoline waste gas applications
EP3501646A1 (de) 2017-12-19 2019-06-26 Umicore Ag & Co. Kg Katalytisch aktives partikelfilter
EP3501648B1 (de) 2017-12-19 2023-10-04 Umicore Ag & Co. Kg Katalytisch aktives partikelfilter
EP3501647A1 (de) 2017-12-19 2019-06-26 Umicore Ag & Co. Kg Katalytisch aktives partikelfilter
US20220161236A1 (en) * 2019-03-18 2022-05-26 Basf Corporation Layered tri-metallic catalytic article and method of manufacturing the catalytic article
US20220193639A1 (en) * 2019-03-18 2022-06-23 Basf Corporation Layered tri-metallic catalytic article and method of manufacturing the catalytic article
CN113646064A (zh) 2019-03-29 2021-11-12 优美科股份公司及两合公司 催化活性微粒过滤器
DE102020101876A1 (de) 2020-01-27 2021-07-29 Umicore Ag & Co. Kg Doppelschichtiger Dreiweg-Katalysator mit weiter verbesserter Alterungsstabilität
EP4237127A1 (de) 2020-10-29 2023-09-06 BASF Corporation Dreiweg-dieselkatalysator für kaltstarttechnologie
DE102021118802A1 (de) 2021-07-21 2023-01-26 Umicore Ag & Co. Kg Abgasreinigungssystem zur Reinigung von Abgasen von Benzinmotoren
DE102021118803A1 (de) 2021-07-21 2023-01-26 Umicore Ag & Co. Kg Abgasreinigungssystem zur Reinigung von Abgasen von Benzinmotoren
DE102021118801A1 (de) 2021-07-21 2023-01-26 Umicore Ag & Co. Kg Abgasreinigungssystem zur Reinigung von Abgasen von Benzinmotoren
DE102022130469A1 (de) 2022-11-17 2024-05-23 Umicore Ag & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Substrats für eine Abgasnachbehandlungseinrichtung
DE102023117464A1 (de) 2023-07-03 2025-01-09 Umicore Ag & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Substrats für eine Abgasnachbehandlungseinrichtung
DE102023132075A1 (de) * 2023-11-17 2025-05-22 Umicore Ag & Co. Kg Katalytischer Partikelfilter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8502767A (pt) * 1984-06-14 1986-02-18 Engelhard Corp Processo para oxidar simultaneamente hidrocarbonetos gasosos e monoxido de carbono,processo para preparacao de catalisador de tres vias,e processo para oxidacao de hidrocarbonetos e monosido de carbono e para reducao de oxidos de nitrogenio em uma corrente de gas
FR2622126B1 (fr) * 1987-10-21 1991-06-14 Procatalyse Ste Fse Produits C Catalyseur pour le traitement des gaz d'echappement des moteurs a combustion interne et procede de fabrication de ce catalyseur
SE462143C (sv) * 1988-03-07 1996-02-19 Heraeus Gmbh W C Katalysator för bilavgasrening, förfarande för framställning därav samt användning därav
CA2011484C (en) * 1989-04-19 1997-03-04 Joseph C. Dettling Palladium-containing, ceria-supported platinum catalyst and catalyst assembly including the same
DK0428753T3 (da) * 1989-06-09 1995-07-03 N E Chemcat Corp Katalysator til rensning af udstødningsgas med udmærket varmebestandighed samt fremgangsmåde til dens fremstilling
DE4003939A1 (de) * 1990-02-09 1991-08-14 Degussa Katalysator fuer die reinigung der abgase von brennkraftmaschinen
US5057483A (en) * 1990-02-22 1991-10-15 Engelhard Corporation Catalyst composition containing segregated platinum and rhodium components
CA2064977C (en) * 1991-04-05 1998-09-22 Eiichi Shiraishi Catalyst for purifying exhaust gas
WO1995000235A1 (en) * 1993-06-25 1995-01-05 Engelhard Corporation Layered catalyst composite

Also Published As

Publication number Publication date
CA2192176A1 (en) 1995-12-28
WO1995035152A1 (en) 1995-12-28
KR970703801A (ko) 1997-08-09
AU1843795A (en) 1996-01-15
KR100361417B1 (ko) 2003-01-24
DE29506440U1 (de) 1995-07-27
EP0765189A1 (de) 1997-04-02
EP0765189B1 (de) 2000-04-12
DE69516281D1 (de) 2000-05-18
DE69516281T2 (de) 2000-08-31
JPH10501737A (ja) 1998-02-17

Similar Documents

Publication Publication Date Title
DE69516281D1 (de) Zusammengesetzter katalysator mit schichtstruktur
WO1995000235B1 (en) Layered catalyst composite
DE60231135D1 (de) Schichtkatalysatorzusammenstellung und deren verwendung
DE69509672D1 (de) Katalysator mit zirkonoxid/ceroxid träger
EP1203611B2 (de) Verfahren und Vorrichtung zur selektiven katalytischen Reduktion von Stickoxiden in sauerstoffreichem Abgas
BR9509967A (pt) Catalisador em camadas e método
CA1331375C (en) Catalyst for the purification of exhaust gases of internal combustion engines
EP1036591B8 (de) Abgasreinigungskatalysator und verfahren zur reinigung von abgasen
EP0298351A3 (de) Katalysatoren zur Regelung von Kraftwagen auspuffgasen, die Kohlenwasserstoff, Kohlenmonoxid, Stickstoffoxide und Schwefelwasserstoff
KR890006291A (ko) 로듐을 함유하지 않는 3방(三方 : three-way) 촉매
RU2013133964A (ru) Катализатор окисления для двигателя внутреннего сгорания, работающего на бедной смеси
DE59100351D1 (de) Katalysator für die Reinigung der Abgase von Brennkraftmaschinen.
ES8707126A1 (es) Un metodo para oxidar simultaneamente hidrocarburos gaseosos y monoxido de carbono
DE69435061D1 (de) Katalysatorzusammensetzung
CA2234355A1 (en) Engine exhaust gas catalyst
CA2341065A1 (en) Process for checking the operatability of an exhaust gas purification catalyst
GB1405405A (en) Platinum group metal catalysts
CA2090882A1 (en) Reduction of the quantity of nox in lean exhaust gas of motor vehicle engines
CA2110139A1 (en) Exhaust Gas Purification System for Reducing Hydrocarbon Emissions During the Cold Start of Combustion Engines
EP1034832A3 (de) Katalysator zur Abgasreinigung eines Dieselmotors
ATE242042T1 (de) Stickstoffoxidentfernungskatalysator
US20130287640A1 (en) Base metal exhaust gas control apparatus and base metal exhaust gas control system for internal combustion engine
KR960028969A (ko) 질소산화물 함유 배기가스의 처리방법, 정화촉매 및 장치
SE7707026L (sv) Oxidations-reduktionskatalysator for behandling av forbrenningsavgas
CA2151859A1 (en) Catalyst for purifying exhaust gas from lean burn engine and method for purification

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties