JP2008023451A - 排ガス浄化用触媒 - Google Patents
排ガス浄化用触媒 Download PDFInfo
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- JP2008023451A JP2008023451A JP2006198471A JP2006198471A JP2008023451A JP 2008023451 A JP2008023451 A JP 2008023451A JP 2006198471 A JP2006198471 A JP 2006198471A JP 2006198471 A JP2006198471 A JP 2006198471A JP 2008023451 A JP2008023451 A JP 2008023451A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 69
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 82
- 238000000746 purification Methods 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 23
- 238000011068 loading method Methods 0.000 claims description 65
- 239000010410 layer Substances 0.000 claims description 38
- 229910052697 platinum Inorganic materials 0.000 claims description 14
- 239000011247 coating layer Substances 0.000 claims description 10
- 229910052703 rhodium Inorganic materials 0.000 claims description 10
- 238000010792 warming Methods 0.000 abstract description 4
- 239000010948 rhodium Substances 0.000 description 68
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 58
- 239000007789 gas Substances 0.000 description 45
- 239000000843 powder Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000006104 solid solution Substances 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000010970 precious metal Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 229910052878 cordierite Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- VXNYVYJABGOSBX-UHFFFAOYSA-N rhodium(3+);trinitrate Chemical compound [Rh+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VXNYVYJABGOSBX-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- 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
-
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/464—Rhodium
-
- B01J35/19—
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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
- 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
- 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
-
- 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
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- 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
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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
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
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- 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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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
【解決手段】コート層の排ガス上流側には担体基材の1リットルあたりの担持量が0.75gを超える量でPtを担持し、コート層におけるRhの担持密度を排ガス上流側より排ガス下流側が高くなるようにした。
リッチ雰囲気となり易い排ガス下流側にRhを高密度担持することで、暖機後の浄化性能が向上する。
【選択図】図1
Description
図1に本実施例の排ガス浄化用触媒の模式的な断面図を示す。この排ガス浄化用触媒は、コージェライト製のハニカム基材1(長さ 130mm)と、ハニカム基材1の上流側端面から65mmの範囲に形成された上流側コート層2と、ハニカム基材1の下流側端面から65mmの範囲に形成された下流側コート層3と、からなる。上流側コート層2及び下流側コート層3には、それぞれPt及びRhが異なる担持密度で担持されている。以下、この排ガス浄化用触媒の製造方法を説明し、構成の詳細な説明に代える。
実施例1と同様のCeO2−ZrO2固溶体粉末を用い、Pt又はRhをそれぞれ担持して担持量が異なること以外は実施例1と同様の触媒粉末を調製した。そして実施例1と同様のハニカム基材に同様にコート層を形成し、表1に示すようにPtとRhの担持量及び担持分布が異なる触媒をそれぞれ調製した。いずれも触媒全体では、Ptが 1.5g/L、Rhが 0.4g/Lそれぞれ担持されていることになる。
実施例1と同様のCeO2−ZrO2固溶体粉末を用い、Pt又はRhをそれぞれ担持して担持量が異なること以外は実施例1と同様の触媒粉末を調製した。そして実施例1と同様のハニカム基材に同様にコート層を形成し、表1に示すように、Ptが全体に均一に 1.5g/L担持され、Rhが全体に均一に 0.4g/L担持された触媒を調製した。
実施例1と同様のCeO2−ZrO2固溶体粉末を用い、Pt又はRhをそれぞれ担持して担持量が異なること以外は実施例1と同様の触媒粉末を調製した。そして実施例1と同様のハニカム基材の上流側端面から30mmの範囲に上流側コート層2を形成し、残りの 100mmの範囲に下流側コート層を形成したこと以外は実施例1と同様にしてコート層を形成し、表2に示すようにPtとRhの担持量及び担持分布が異なる触媒をそれぞれ調製した。いずれも触媒全体では、Ptが 1.5g/L、Rhが 0.4g/Lそれぞれ担持されていることになる。
Claims (6)
- 担体基材と、該担体基材表面に形成されたコート層と、からなり、該コート層は多孔質酸化物担体と該多孔質酸化物担体に担持された少なくともPtとRhを含む貴金属とよりなる排ガス浄化用触媒において、
該コート層の排ガス上流側には該担体基材の1リットルあたりの担持量が0.75gを超える量でPtを担持し、
該コート層におけるRhの担持密度は排ガス上流側より排ガス下流側が高いことを特徴とする排ガス浄化用触媒。 - 排ガス下流側におけるRhの担持量に対する排ガス上流側におけるRhの担持量の比が 0.9以下である請求項1に記載の排ガス浄化用触媒。
- 排ガス下流側におけるRhの担持量に対する排ガス上流側におけるRhの担持量の比が 0.5以下である請求項2に記載の排ガス浄化用触媒。
- 前記コート層におけるPtの担持密度は、排ガス下流側より排ガス上流側が高い請求項1に記載の排ガス浄化用触媒。
- 排ガス下流側におけるPtの担持量に対する排ガス上流側におけるPtの担持量の比が 0.8以上である請求項4に記載の排ガス浄化用触媒。
- 排ガス下流側におけるPtの担持量に対する排ガス上流側におけるPtの担持量の比が 1.4以上である請求項5に記載の排ガス浄化用触媒。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006198471A JP4935219B2 (ja) | 2006-07-20 | 2006-07-20 | 排ガス浄化用触媒 |
CN2007800269482A CN101489670B (zh) | 2006-07-20 | 2007-07-20 | 排气净化用催化剂 |
PCT/JP2007/064358 WO2008010576A1 (fr) | 2006-07-20 | 2007-07-20 | Catalyseur pour la purification d'un gaz d'échappement |
KR1020097001123A KR101006220B1 (ko) | 2006-07-20 | 2007-07-20 | 배기가스 정화용 촉매 |
EP07791095.8A EP2047903B1 (en) | 2006-07-20 | 2007-07-20 | Catalyst for purifying exhaust gas |
US12/373,926 US7846865B2 (en) | 2006-07-20 | 2007-07-20 | Catalyst for purifying exhaust gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2006198471A JP4935219B2 (ja) | 2006-07-20 | 2006-07-20 | 排ガス浄化用触媒 |
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JP2008023451A true JP2008023451A (ja) | 2008-02-07 |
JP4935219B2 JP4935219B2 (ja) | 2012-05-23 |
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JP2006198471A Expired - Fee Related JP4935219B2 (ja) | 2006-07-20 | 2006-07-20 | 排ガス浄化用触媒 |
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Country | Link |
---|---|
US (1) | US7846865B2 (ja) |
EP (1) | EP2047903B1 (ja) |
JP (1) | JP4935219B2 (ja) |
KR (1) | KR101006220B1 (ja) |
CN (1) | CN101489670B (ja) |
WO (1) | WO2008010576A1 (ja) |
Cited By (5)
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JP2010201359A (ja) * | 2009-03-04 | 2010-09-16 | Johnson Matthey Japan Inc | 排気浄化触媒およびそれを用いた排気処理装置 |
JP2013119077A (ja) * | 2011-12-08 | 2013-06-17 | Toyota Motor Corp | 排ガス浄化用触媒及びその利用 |
US9597660B2 (en) | 2013-08-22 | 2017-03-21 | Toyota Jidosha Kabushiki Kaisha | Catalytic converter |
US9999871B2 (en) | 2013-10-09 | 2018-06-19 | Toyota Jidosha Kabushiki Kaisha | Catalytic converter |
JP2021104477A (ja) * | 2019-12-26 | 2021-07-26 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
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JP5492448B2 (ja) * | 2009-04-28 | 2014-05-14 | 株式会社キャタラー | 排ガス浄化用触媒 |
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 |
US8591820B2 (en) | 2011-03-11 | 2013-11-26 | Corning Incorporated | Honeycomb filters for reducing NOx and particulate matter in diesel engine exhaust |
JP6545962B2 (ja) * | 2015-01-22 | 2019-07-17 | 株式会社キャタラー | 排ガス浄化用触媒 |
US20200376467A1 (en) * | 2018-02-21 | 2020-12-03 | Cataler Corporation | Exhaust gas purification catalyst device |
KR102563441B1 (ko) * | 2018-11-12 | 2023-08-03 | 현대자동차 주식회사 | 배출 가스 정화 장치 |
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 |
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 |
US11788450B2 (en) * | 2020-10-30 | 2023-10-17 | Johnson Matthey Public Limited Company | TWC catalysts for gasoline engine exhaust gas treatments |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63168032A (ja) * | 1986-12-22 | 1988-07-12 | テキサス インスツルメンツ インコーポレイテツド | 集積回路分離方法 |
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 |
JP2001252565A (ja) * | 2000-03-10 | 2001-09-18 | Toyota Motor Corp | 排ガス浄化用触媒 |
JP2004016931A (ja) * | 2002-06-17 | 2004-01-22 | Nissan Motor Co Ltd | 排気ガス浄化触媒 |
US6764665B2 (en) * | 2001-10-26 | 2004-07-20 | Engelhard Corporation | Layered catalyst composite |
JP2005530614A (ja) * | 2002-06-27 | 2005-10-13 | エンゲルハード・コーポレーシヨン | マルチゾーン触媒コンバーター |
JP2006075724A (ja) * | 2004-09-09 | 2006-03-23 | Toyota Motor Corp | 排ガス浄化用触媒 |
Family Cites Families (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0522261Y2 (ja) * | 1987-04-22 | 1993-06-08 | ||
US5010051A (en) * | 1989-11-08 | 1991-04-23 | Engelhard Corporation | Staged three-way conversion catalyst and method of using the same |
JPH04118053A (ja) * | 1989-12-29 | 1992-04-20 | Tokyo Roki Kk | エンジンの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 |
JP3137496B2 (ja) * | 1992-11-11 | 2001-02-19 | トヨタ自動車株式会社 | ディーゼルエンジンの排気浄化用触媒 |
JP3281087B2 (ja) * | 1993-02-10 | 2002-05-13 | 日本碍子株式会社 | 排ガス浄化用触媒 |
EP0622107B1 (en) | 1993-04-28 | 2000-02-09 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying catalyst in diesel engines |
EP0705134B1 (en) * | 1993-06-25 | 1999-04-14 | Engelhard Corporation | Layered catalyst composite |
US6667018B2 (en) * | 1994-07-05 | 2003-12-23 | Ngk Insulators, Ltd. | Catalyst-adsorbent for purification of exhaust gases and method for purification of exhaust gases |
US5556825A (en) * | 1995-01-06 | 1996-09-17 | Ford Motor Company | Automotive catalysts with improved oxygen storage and metal dispersion |
JP3327054B2 (ja) | 1995-06-07 | 2002-09-24 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
US6087298A (en) * | 1996-05-14 | 2000-07-11 | Engelhard Corporation | Exhaust gas treatment system |
US5948377A (en) * | 1996-09-04 | 1999-09-07 | Engelhard Corporation | Catalyst composition |
US5981427A (en) * | 1996-09-04 | 1999-11-09 | Engelhard Corporation | Catalyst composition |
JP3503101B2 (ja) | 1996-12-19 | 2004-03-02 | 株式会社豊田中央研究所 | 排ガス浄化用触媒 |
US6047544A (en) * | 1997-08-20 | 2000-04-11 | Nissan Motor Co., Ltd. | Engine exhaust gas purification catalyst and exhaust gas purifier |
WO2000000283A1 (fr) * | 1998-06-30 | 2000-01-06 | Toyota Jidosha Kabushiki Kaisha | Catalyseur pour la purification des gaz d'echappement, procede de production dudit catalyseur et procede de purification de gaz d'echappement |
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 |
US6634168B1 (en) * | 1998-10-19 | 2003-10-21 | Nissan Motor Co., Ltd. | Exhaust gas purification system |
US6335305B1 (en) * | 1999-01-18 | 2002-01-01 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Catalyst for purifying exhaust gas |
US6375910B1 (en) | 1999-04-02 | 2002-04-23 | Engelhard Corporation | Multi-zoned catalytic trap and methods of making and using the same |
US6881384B1 (en) * | 1999-08-30 | 2005-04-19 | Daihatsu Motor Co., Ltd. | Catalytic converter for cleaning exhaust gas |
US6846466B2 (en) * | 2000-03-22 | 2005-01-25 | Cataler Corporation | Catalyst for purifying an exhaust gas |
JP2002282702A (ja) * | 2001-01-19 | 2002-10-02 | Ngk Insulators Ltd | 触媒体 |
US6777370B2 (en) * | 2001-04-13 | 2004-08-17 | Engelhard Corporation | SOx tolerant NOx trap catalysts and methods of making and using the same |
US7276212B2 (en) * | 2001-10-01 | 2007-10-02 | Engelhard Corporation | Exhaust articles for internal combustion engines |
JP3855266B2 (ja) * | 2001-11-01 | 2006-12-06 | 日産自動車株式会社 | 排気ガス浄化用触媒 |
JP4228278B2 (ja) * | 2002-03-19 | 2009-02-25 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
JP3872384B2 (ja) * | 2002-06-13 | 2007-01-24 | トヨタ自動車株式会社 | 排ガス浄化フィルタ触媒 |
US7329629B2 (en) * | 2002-10-24 | 2008-02-12 | Ford Global Technologies, Llc | Catalyst system for lean burn engines |
US7071141B2 (en) * | 2002-10-24 | 2006-07-04 | Ford Global Technologies, Llc | Perovskite catalyst system for lean burn engines |
JP2004181374A (ja) | 2002-12-04 | 2004-07-02 | Mitsubishi Motors Corp | 排気ガス浄化用触媒 |
JP4503304B2 (ja) * | 2004-01-29 | 2010-07-14 | 株式会社キャタラー | 排ガス浄化用触媒 |
US7374729B2 (en) * | 2004-03-30 | 2008-05-20 | Basf Catalysts Llc | Exhaust gas treatment catalyst |
WO2006057067A1 (ja) * | 2004-11-25 | 2006-06-01 | Cataler Corporation | 排ガス浄化用触媒 |
JP4923412B2 (ja) * | 2005-02-24 | 2012-04-25 | トヨタ自動車株式会社 | 排ガス浄化触媒 |
JP4669322B2 (ja) * | 2005-05-24 | 2011-04-13 | 株式会社キャタラー | 排ガス浄化用触媒 |
JP5021188B2 (ja) | 2005-08-01 | 2012-09-05 | 株式会社キャタラー | 排ガス浄化用触媒 |
US7576031B2 (en) * | 2006-06-09 | 2009-08-18 | Basf Catalysts Llc | Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function |
US20080044330A1 (en) * | 2006-08-21 | 2008-02-21 | Shau-Lin Franklin Chen | Layered catalyst composite |
-
2006
- 2006-07-20 JP JP2006198471A patent/JP4935219B2/ja not_active Expired - Fee Related
-
2007
- 2007-07-20 CN CN2007800269482A patent/CN101489670B/zh not_active Expired - Fee Related
- 2007-07-20 KR KR1020097001123A patent/KR101006220B1/ko not_active IP Right Cessation
- 2007-07-20 EP EP07791095.8A patent/EP2047903B1/en not_active Expired - Fee Related
- 2007-07-20 US US12/373,926 patent/US7846865B2/en not_active Expired - Fee Related
- 2007-07-20 WO PCT/JP2007/064358 patent/WO2008010576A1/ja active Search and Examination
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63168032A (ja) * | 1986-12-22 | 1988-07-12 | テキサス インスツルメンツ インコーポレイテツド | 集積回路分離方法 |
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 |
JP2001252565A (ja) * | 2000-03-10 | 2001-09-18 | Toyota Motor Corp | 排ガス浄化用触媒 |
US6764665B2 (en) * | 2001-10-26 | 2004-07-20 | Engelhard Corporation | Layered catalyst composite |
JP2004016931A (ja) * | 2002-06-17 | 2004-01-22 | Nissan Motor Co Ltd | 排気ガス浄化触媒 |
JP2005530614A (ja) * | 2002-06-27 | 2005-10-13 | エンゲルハード・コーポレーシヨン | マルチゾーン触媒コンバーター |
JP2006075724A (ja) * | 2004-09-09 | 2006-03-23 | Toyota Motor Corp | 排ガス浄化用触媒 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010201359A (ja) * | 2009-03-04 | 2010-09-16 | Johnson Matthey Japan Inc | 排気浄化触媒およびそれを用いた排気処理装置 |
JP2013119077A (ja) * | 2011-12-08 | 2013-06-17 | Toyota Motor Corp | 排ガス浄化用触媒及びその利用 |
US9597660B2 (en) | 2013-08-22 | 2017-03-21 | Toyota Jidosha Kabushiki Kaisha | Catalytic converter |
US9999871B2 (en) | 2013-10-09 | 2018-06-19 | Toyota Jidosha Kabushiki Kaisha | Catalytic converter |
JP2021104477A (ja) * | 2019-12-26 | 2021-07-26 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
JP7173708B2 (ja) | 2019-12-26 | 2022-11-16 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
Also Published As
Publication number | Publication date |
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WO2008010576A1 (fr) | 2008-01-24 |
US7846865B2 (en) | 2010-12-07 |
KR20090025344A (ko) | 2009-03-10 |
EP2047903A4 (en) | 2010-12-15 |
EP2047903B1 (en) | 2015-10-28 |
KR101006220B1 (ko) | 2011-01-07 |
CN101489670B (zh) | 2013-01-16 |
US20090197764A1 (en) | 2009-08-06 |
CN101489670A (zh) | 2009-07-22 |
EP2047903A1 (en) | 2009-04-15 |
JP4935219B2 (ja) | 2012-05-23 |
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