[go: up one dir, main page]

WO2009005153A1 - 排ガス浄化用触媒 - Google Patents

排ガス浄化用触媒 Download PDF

Info

Publication number
WO2009005153A1
WO2009005153A1 PCT/JP2008/062220 JP2008062220W WO2009005153A1 WO 2009005153 A1 WO2009005153 A1 WO 2009005153A1 JP 2008062220 W JP2008062220 W JP 2008062220W WO 2009005153 A1 WO2009005153 A1 WO 2009005153A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust purification
catalyst
lower layer
purification catalyst
rhodium
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.)
Ceased
Application number
PCT/JP2008/062220
Other languages
English (en)
French (fr)
Inventor
Ichiro Kitamura
Akimasa Hirai
Kenichi Taki
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
Original Assignee
Cataler 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 Corp filed Critical Cataler Corp
Priority to CN2008800223731A priority Critical patent/CN101687180B/zh
Priority to EP08790900A priority patent/EP2163303A4/en
Publication of WO2009005153A1 publication Critical patent/WO2009005153A1/ja
Priority to US12/635,943 priority patent/US8039418B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
    • 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
    • B01D53/922—Mixtures of carbon monoxide or hydrocarbons and nitrogen oxides
    • B01D53/925—Simultaneous elimination of carbon monoxide or hydrocarbons and nitrogen oxides
    • 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
    • B01D2255/10—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
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1025—Rhodium
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20707—Titanium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20715—Zirconium
    • 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
    • B01D2255/902—Multilayered catalyst
    • B01D2255/9022—Two 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
    • B01D2255/908—O2-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
    • 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
    • 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
    • F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
    • F01N2510/0682—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having a discontinuous, uneven or partially overlapping coating of catalytic material, e.g. higher amount of material upstream than downstream or vice versa
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (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 Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

　本願発明の排ガス浄化用触媒（１）は、基材（２）と、基材（２）を被覆すると共に酸素貯蔵材料とパラジウムとを含み、ロジウムを含んでいない下層（３）と、下層（３）を被覆すると共にロジウムとこれを担持した担体と含み、下層（３）と比較して酸素貯蔵能がより低い上層（４）とを具備する。本願発明の構造を採用すると、エンジンを始動した直後の状態とエンジンを継続的に稼動した状態との双方において、高い排ガス浄化効率を達成することが可能となると共に、低コストを達成することができる。
PCT/JP2008/062220 2007-07-04 2008-07-04 排ガス浄化用触媒 Ceased WO2009005153A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2008800223731A CN101687180B (zh) 2007-07-04 2008-07-04 废气净化用催化剂
EP08790900A EP2163303A4 (en) 2007-07-04 2008-07-04 CATALYST FOR EXHAUST PURIFICATION
US12/635,943 US8039418B2 (en) 2007-07-04 2009-12-11 Exhaust gas-purifying catalyst

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007176602A JP5173282B2 (ja) 2007-07-04 2007-07-04 排ガス浄化用触媒
JP2007-176602 2007-07-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/635,943 Continuation US8039418B2 (en) 2007-07-04 2009-12-11 Exhaust gas-purifying catalyst

Publications (1)

Publication Number Publication Date
WO2009005153A1 true WO2009005153A1 (ja) 2009-01-08

Family

ID=40226191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/062220 Ceased WO2009005153A1 (ja) 2007-07-04 2008-07-04 排ガス浄化用触媒

Country Status (5)

Country Link
US (1) US8039418B2 (ja)
EP (1) EP2163303A4 (ja)
JP (1) JP5173282B2 (ja)
CN (1) CN101687180B (ja)
WO (1) WO2009005153A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011056768A3 (en) * 2009-11-06 2011-10-06 Basf Corporation Small engine layered catalyst article and method of making
US8039418B2 (en) 2007-07-04 2011-10-18 Cataler Corporation Exhaust gas-purifying catalyst

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010265795A (ja) * 2009-05-14 2010-11-25 Mazda Motor Corp 排気ガス浄化装置
EP2444152A4 (en) * 2009-06-16 2013-07-31 Cataler Corp EMISSION CONTROL CATALYST, POWDER MATERIAL AND METHOD FOR PRODUCING THE EMISSION CONTROL CATALYST
US8828343B2 (en) * 2010-03-05 2014-09-09 Basf Corporation Carbon monoxide conversion catalyst
JP5458973B2 (ja) * 2010-03-09 2014-04-02 マツダ株式会社 排気ガス浄化用触媒
JP5567923B2 (ja) * 2010-07-23 2014-08-06 トヨタ自動車株式会社 排ガス浄化用触媒
JP5232258B2 (ja) * 2011-02-25 2013-07-10 本田技研工業株式会社 内燃機関の排気浄化装置
JP5807782B2 (ja) * 2011-12-28 2015-11-10 トヨタ自動車株式会社 排ガス浄化用触媒
CN103143351B (zh) * 2013-03-15 2015-04-29 无锡威孚环保催化剂有限公司 三元催化剂
DE102013210270A1 (de) * 2013-06-03 2014-12-04 Umicore Ag & Co. Kg Dreiwegkatalysator
EP2905076B1 (de) 2014-02-06 2018-08-29 Heraeus Deutschland GmbH & Co. KG Verfahren zur herstellung eines katalysators mit hochgetemperter pd-schicht
JP6293638B2 (ja) * 2014-10-17 2018-03-14 株式会社キャタラー 排ガス浄化装置
US10512898B2 (en) * 2015-06-24 2019-12-24 Basf Corporation Layered automotive catalyst composites
EP3354336B1 (en) * 2015-09-24 2021-07-07 Cataler Corporation Catalytic exhaust gas purification apparatus
JP6869976B2 (ja) * 2016-05-25 2021-05-12 エヌ・イーケムキャット株式会社 ガソリンエンジン排気ガスの浄化用三元触媒
CN109310992A (zh) * 2016-06-07 2019-02-05 株式会社科特拉 废气净化用催化剂
JP6753811B2 (ja) * 2017-04-19 2020-09-09 トヨタ自動車株式会社 排ガス浄化用触媒
JP6684257B2 (ja) * 2017-09-27 2020-04-22 イビデン株式会社 排ガス浄化用ハニカム触媒
JP2019058876A (ja) 2017-09-27 2019-04-18 イビデン株式会社 ハニカム触媒
JP2019058875A (ja) 2017-09-27 2019-04-18 イビデン株式会社 ハニカム触媒
JP6698602B2 (ja) 2017-09-27 2020-05-27 イビデン株式会社 排ガス浄化用ハニカム触媒
JP7026530B2 (ja) * 2018-02-22 2022-02-28 エヌ・イーケムキャット株式会社 排ガス浄化用三元触媒
US20200030776A1 (en) * 2018-07-27 2020-01-30 Johnson Matthey Public Limited Company Twc catalysts containing high dopant support
BR112021018512A2 (pt) * 2019-03-18 2021-11-23 Basf Corp Artigo catalítico, processo para a preparação de um artigo catalítico sistema de exaustão para motores de combustão interna, métodos para tratar uma corrente de exaustão gasosa e para reduzir níveis de hidrocarbonetos e uso
JP7288331B2 (ja) * 2019-03-29 2023-06-07 株式会社キャタラー 排ガス浄化触媒装置
JP7355775B2 (ja) * 2021-03-05 2023-10-03 トヨタ自動車株式会社 排ガス浄化用触媒
JP7600910B2 (ja) * 2021-07-06 2024-12-17 トヨタ自動車株式会社 排ガス浄化用触媒
JP7708872B2 (ja) * 2021-10-20 2025-07-15 三井金属鉱業株式会社 排ガス浄化用触媒

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293376A (ja) * 1992-04-15 1993-11-09 Nissan Motor Co Ltd 排ガス浄化用触媒及び排ガス浄化方法
JPH0663403A (ja) * 1992-08-24 1994-03-08 Nissan Motor Co Ltd 排ガス浄化用触媒
JPH0760117A (ja) * 1993-08-30 1995-03-07 Honda Motor Co Ltd 排気ガス浄化用触媒
JPH10296085A (ja) 1997-04-30 1998-11-10 Cataler Kogyo Kk 排ガス浄化用触媒
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
JP2005000884A (ja) * 2003-06-13 2005-01-06 Nissan Motor Co Ltd 排気ガス浄化用触媒
US20060217263A1 (en) 2005-03-24 2006-09-28 Tokyo Roki Co., Ltd Exhaust gas purification catalyst

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644999B2 (ja) 1988-04-30 1994-06-15 株式会社豊田中央研究所 排気ガス浄化用触媒
US5376610A (en) * 1992-04-15 1994-12-27 Nissan Motor Co., Ltd. Catalyst for exhaust gas purification and method for exhaust gas purification
JP3238316B2 (ja) 1995-12-07 2001-12-10 株式会社豊田中央研究所 排ガス浄化用触媒
JP3341973B2 (ja) 1995-12-07 2002-11-05 株式会社豊田中央研究所 酸化物固溶体粒子及びその製造方法
US6294140B1 (en) * 1999-04-23 2001-09-25 Degussa Ag Layered noble metal-containing exhaust gas catalyst and its preparation
US6764665B2 (en) * 2001-10-26 2004-07-20 Engelhard Corporation Layered catalyst composite
US20080044330A1 (en) * 2006-08-21 2008-02-21 Shau-Lin Franklin Chen Layered catalyst composite
JP5173282B2 (ja) 2007-07-04 2013-04-03 株式会社キャタラー 排ガス浄化用触媒

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05293376A (ja) * 1992-04-15 1993-11-09 Nissan Motor Co Ltd 排ガス浄化用触媒及び排ガス浄化方法
JPH0663403A (ja) * 1992-08-24 1994-03-08 Nissan Motor Co Ltd 排ガス浄化用触媒
JPH0760117A (ja) * 1993-08-30 1995-03-07 Honda Motor Co Ltd 排気ガス浄化用触媒
US5753580A (en) 1993-08-30 1998-05-19 Honda Giken Kogyo Kabushiki Kaisha Exhaust emission control catalyst comprising cerium
JPH10296085A (ja) 1997-04-30 1998-11-10 Cataler Kogyo Kk 排ガス浄化用触媒
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
JP2005000884A (ja) * 2003-06-13 2005-01-06 Nissan Motor Co Ltd 排気ガス浄化用触媒
US20060217263A1 (en) 2005-03-24 2006-09-28 Tokyo Roki Co., Ltd Exhaust gas purification catalyst

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8039418B2 (en) 2007-07-04 2011-10-18 Cataler Corporation Exhaust gas-purifying catalyst
WO2011056768A3 (en) * 2009-11-06 2011-10-06 Basf Corporation Small engine layered catalyst article and method of making
CN102711987A (zh) * 2009-11-06 2012-10-03 巴斯夫公司 小型引擎层式催化剂制品及制备方法
CN105833866A (zh) * 2009-11-06 2016-08-10 巴斯夫公司 小型引擎层式催化剂制品及制备方法

Also Published As

Publication number Publication date
US8039418B2 (en) 2011-10-18
US20100087314A1 (en) 2010-04-08
CN101687180B (zh) 2013-06-26
EP2163303A1 (en) 2010-03-17
EP2163303A4 (en) 2013-03-13
JP2009011937A (ja) 2009-01-22
CN101687180A (zh) 2010-03-31
JP5173282B2 (ja) 2013-04-03

Similar Documents

Publication Publication Date Title
WO2009005153A1 (ja) 排ガス浄化用触媒
WO2011109676A3 (en) Carbon monoxide conversion catalyst
WO2010001215A8 (en) Exhaust gas purification catalyst
JP2010043569A5 (ja)
WO2011081219A3 (en) Catalyst for converting exhaust gases
WO2009023468A3 (en) Catalyst compositions
WO2010083313A3 (en) Diesel oxidation catalyst composite with layer structure for carbon monoxide and hydrocarbon conversion
WO2010096612A3 (en) Aging-resistant catalyst article for internal combustion engines
WO2008000449A3 (de) Dreiweg-katalysator
ATE482766T1 (de) Doppelschichtiger dreiweg-katalysator
DK2363194T3 (da) System til fjernelse af nitrogenoxider fra en udstødningsgas
GB2444126B8 (en) Engine exhaust catalysts containing palladium-gold
WO2005091416A3 (en) Modified carbon products, their use in fluid/gas diffusion layers and similar devices and methods relating to the same
IN2014CN02204A (ja)
WO2008024708A3 (en) Layered catalyst composite for exhaust gas purification
WO2009041228A1 (ja) 排ガス浄化システムおよび排ガス浄化方法
WO2012059808A8 (en) Automobile exhaust gas catalytic converter
WO2011082357A3 (en) Engine exhaust catalysts doped with bismuth or manganese
WO2007095150A3 (en) Methods and apparatus for pfc abatement using a cdo chamber
AU2003293990A8 (en) Gas diffuser substrate containing catalysts for fuel cells, in addition to a method for the production thereof
WO2006065459A8 (en) Systems and processes for reducing the sulfer content of hydrocarbon streams
JP2004527372A5 (ja)
WO2009057959A3 (en) A catalyst for treating exhaust gas of natural gas vehicles
WO2008111486A1 (ja) 触媒劣化防止装置および低ＮＯx燃焼装置
WO2005069893A3 (en) Catalyst and method for its manufacture

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880022373.1

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08790900

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2008790900

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE