DE69518994T2 - Verfahren zur Reinigung von Abgasen - Google Patents

Verfahren zur Reinigung von Abgasen

Info

Publication number
DE69518994T2
DE69518994T2 DE69518994T DE69518994T DE69518994T2 DE 69518994 T2 DE69518994 T2 DE 69518994T2 DE 69518994 T DE69518994 T DE 69518994T DE 69518994 T DE69518994 T DE 69518994T DE 69518994 T2 DE69518994 T2 DE 69518994T2
Authority
DE
Germany
Prior art keywords
exhaust gas
gas purification
purification process
exhaust
purification
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.)
Expired - Lifetime
Application number
DE69518994T
Other languages
English (en)
Other versions
DE69518994D1 (de
Inventor
Naoto Miyoshi
Tuneyuki Tanizawa
Kazunobu Ishibashi
Koichi Kasahara
Syuji Tateishi
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 Industrial Co Ltd
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 Industrial Co Ltd, Toyota Motor Corp filed Critical Cataler Industrial Co Ltd
Application granted granted Critical
Publication of DE69518994D1 publication Critical patent/DE69518994D1/de
Publication of DE69518994T2 publication Critical patent/DE69518994T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
    • 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
    • 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
    • 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
    • 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
    • F01N2570/16—Oxygen
    • 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
DE69518994T 1994-02-04 1995-02-03 Verfahren zur Reinigung von Abgasen Expired - Lifetime DE69518994T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP01275494A JP3363564B2 (ja) 1994-02-04 1994-02-04 排ガス浄化用触媒

Publications (2)

Publication Number Publication Date
DE69518994D1 DE69518994D1 (de) 2000-11-09
DE69518994T2 true DE69518994T2 (de) 2001-04-12

Family

ID=11814203

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69518994T Expired - Lifetime DE69518994T2 (de) 1994-02-04 1995-02-03 Verfahren zur Reinigung von Abgasen

Country Status (4)

Country Link
US (1) US5948376A (de)
EP (1) EP0666103B1 (de)
JP (1) JP3363564B2 (de)
DE (1) DE69518994T2 (de)

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JP4438114B2 (ja) * 1999-01-14 2010-03-24 株式会社日立製作所 内燃機関の排ガス浄化方法，排ガス浄化触媒及び排ガス浄化装置
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EP1166853A1 (de) * 2000-06-22 2002-01-02 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Katalysator zur Abgasreinigung
JP2002079106A (ja) * 2000-06-29 2002-03-19 Mazda Motor Corp 排気ガス浄化用触媒、及び排気ガス浄化装置
EP1174173B1 (de) * 2000-07-17 2013-03-20 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Abgasreinigungskatalysator
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US6662951B1 (en) * 2000-09-27 2003-12-16 Basic Resources, Inc. Process for extracting and purifying naturally occurring zeolite
CN1479648A (zh) * 2000-11-06 2004-03-03 康宁股份有限公司 一种用于废气净化的催化剂
GB0028198D0 (en) * 2000-11-20 2001-01-03 Johnson Matthey Plc High temperature nox-trap component
US6670296B2 (en) * 2001-01-11 2003-12-30 Delphi Technologies, Inc. Alumina/zeolite lean NOx catalyst
US6624113B2 (en) * 2001-03-13 2003-09-23 Delphi Technologies, Inc. Alkali metal/alkaline earth lean NOx catalyst
JP2002355561A (ja) * 2001-03-26 2002-12-10 Mazda Motor Corp 排気ガス浄化用触媒、及び排気ガス浄化方法
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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
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JP4952369B2 (ja) * 2007-05-18 2012-06-13 トヨタ自動車株式会社 微量金属の分析方法
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
JP5470099B2 (ja) * 2010-03-05 2014-04-16 日立Ｇｅニュークリア・エナジー株式会社 沸騰水型原子力プラントおよび蒸気乾燥器
JP5405538B2 (ja) * 2010-09-01 2014-02-05 日本碍子株式会社 ハニカム構造体
KR101438953B1 (ko) 2012-12-18 2014-09-11 현대자동차주식회사 저온에서의 NOx 흡장성능이 개선된 LNT촉매
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Also Published As

Publication number Publication date
US5948376A (en) 1999-09-07
JPH07213902A (ja) 1995-08-15
DE69518994D1 (de) 2000-11-09
EP0666103A1 (de) 1995-08-09
JP3363564B2 (ja) 2003-01-08
EP0666103B1 (de) 2000-10-04

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Legal Events

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8364 No opposition during term of opposition