WO2008054017A1 - Exhaust gas purifying catalyst - Google Patents
Exhaust gas purifying catalyst Download PDFInfo
- Publication number
- WO2008054017A1 WO2008054017A1 PCT/JP2007/071592 JP2007071592W WO2008054017A1 WO 2008054017 A1 WO2008054017 A1 WO 2008054017A1 JP 2007071592 W JP2007071592 W JP 2007071592W WO 2008054017 A1 WO2008054017 A1 WO 2008054017A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- exhaust gas
- rhodium
- platinum
- gas 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.)
- Ceased
Links
Classifications
-
- 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
-
- 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
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
-
- 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
- B01J23/44—Palladium
-
- 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
-
- 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
- B01J37/0234—Impregnation and coating simultaneously
-
- 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
-
- 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
-
- 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
- B01D2255/90—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
- B01D2255/902—Multilayered catalyst
- B01D2255/9025—Three layers
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- 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
Definitions
- the present invention relates to a novel catalyst for exhaust gas purification with improved exhaust gas purification performance, particularly NOx purification performance.
- porous metals such as alumina are oxidized to precious metals such as platinum, rhodium, and palladium for the purpose of efficiently purifying toxic gas components, HC, CO, and NO x emitted from internal combustion engines.
- precious metals such as platinum, rhodium, and palladium for the purpose of efficiently purifying toxic gas components, HC, CO, and NO x emitted from internal combustion engines.
- a three-way catalyst coated on a physical support is used.
- exhaust gas regulations have been strengthened worldwide, and it has become difficult to meet the regulations of HC, CO, and NOx, especially HC just after start-up and NOx after dredging.
- platinum and rhodium are resources with small reserves and are expensive, so it is necessary to reduce their use from the viewpoint of resource protection and cost reduction.
- the weight ratio of platinum to rhodium present in the exhaust gas purification catalyst is generally 20: 1 to 2: 1 and is white compared to rhodium.
- Gold was used in large quantities (Gregory S Sims, et al., "Catalyst Performance Study Using Taguchi Methods" SAE Technical Paper Series, 881589, October 10-13, 1988).
- the present inventors found that the exhaust gas purification performance, particularly NOX purification performance, was improved when the amount of platinum used was greatly reduced compared to the amount of rhodium generally used. It came to do.
- the purifying performance of such catalysts is not sufficient by the present inventors' research. It was.
- the present invention provides a support substrate, and one or more catalyst coats formed on the support substrate and including a porous oxide support, platinum, Z, palladium, and rhodium.
- An exhaust gas purifying catalyst having a layer, wherein the weight ratio of (platinum and Z or palladium) Z rhodium is 1.0 or less.
- the present invention provides an exhaust gas purifying catalyst having a support base material and one or more catalyst coating layers formed on the support base material and including a porous oxide support and a noble metal.
- the second and subsequent catalyst coat layers or multiple catalysts are installed in the exhaust gas flow direction.
- the catalyst coating layer of any of the second and subsequent catalysts provides an exhaust gas purification system containing (rhodium and Z or palladium) Z rhodium in a weight ratio of 1.0 or less.
- the exhaust gas purification catalyst of the present invention reduces the amount of platinum and palladium used.
- the amount of coexisting rhodium can be reduced, which is desirable from the viewpoint of cost reduction.
- platinum and palladium can be greatly reduced.
- alloying of platinum with other catalytic metals, especially alloying with rhodium is reduced, and as a result, the heat resistance of the catalyst can be suppressed.
- the present invention includes a support substrate, and one or a plurality of catalyst coating layers formed on the support substrate and containing a porous oxide support and platinum and / or palladium and rhodium.
- An exhaust gas purifying catalyst characterized in that the weight ratio of (platinum and / or palladium) Z rhodium is 1.0 or less.
- platinum and / or palladium and rhodium as catalyst metals are supported on a porous oxide support in a catalyst coat layer formed on a support substrate.
- a support substrate a straight flow structure having a honeycomb passage, a foam structure, or a pellet structure can be used, and the material is a heat-resistant ceramic such as cordierite.
- Conventionally used for exhaust gas purification catalysts such as metal and metal can be used.
- a porous form such as a honeycomb formed of a material such as cordierite is preferred.
- porous oxide carrier examples include porous oxides such as ar or ⁇ monoalumina, titania, zirconia, ceria, silica, or the like.
- a composite oxide composed of a plurality of types selected from these can be used.
- the composite oxide should contain a high content of zirconium, and specifically, it should contain more than 50% by weight of zirconium. Preferably, it contains 60 to 95% by weight of zirconium.
- the porous oxide support may contain an additional porous composite oxide in addition to the above-described high zirconium-containing porous composite oxide.
- the additional porous composite oxide contains cerium within a range that does not adversely affect the performance, it can contain more than zirconium by weight.
- porous composite oxide described in the present specification does not mean that the porous oxide is simply mixed (composited), but is formed by heat treatment or the like. It means a solid solution of some of the constituent elements of other porous oxides in the structure.
- the method for forming the composite oxide is not particularly limited, and a known method can be used.
- the amount ratio of (platinum and / or palladium) / rhodium contained in the catalyst coat layer is 1.0 or less, preferably from 0.01 to 0.5.
- the amount of rhodium may be the amount used in general catalysts. However, because of the characteristics of the catalyst of the present invention, the amount of rhodium per 1 L of the catalyst volume can be reduced to 0.05 ⁇ , and further to 0. Olg.
- the upper limit of the rhodium amount is not particularly limited, and may be 0.5 g, or even 1.0 g, per liter of the catalyst volume. In particular, considering sufficient NO X purification performance and cost, the amount of rhodium used in the present invention is preferably about 0.2 g per liter of the catalyst volume.
- the catalyst coating layer is formed by a conventionally used method, for example, it can be formed on a support substrate by supporting platinum and / or palladium and rhodium on the porous oxide support described above by an impregnation method, a wash coat method, or the like.
- the catalyst coat layer may contain other catalyst metals or NOX storage materials such as alkali metals or alkaline earth metals.
- the catalyst coat layer can be composed of not only a single layer but also a plurality of layers, and the thickness is not particularly limited.
- the catalyst of the present invention is obtained by immersing a support substrate in a slurry-like coating solution containing a catalyst component, a support and the like, adsorbing the coating solution on the surface of the support substrate, drying, and firing. It can be manufactured by repeating the process.
- the present invention is not limited to these methods. For example, after the catalyst components are previously supported on the support, the slurry containing them may be coated on the support substrate.
- the above-mentioned exhaust gas purification catalyst for the month of October is particularly excellent in purification performance for exhaust gas with a low Nx content. Therefore, the NOx that could not be purified by the conventional exhaust gas purification system can be further purified by disposing it downstream of the conventionally used three-way catalyst. Therefore, according to the second aspect of the present invention, in the exhaust gas purification system equipped with the exhaust gas purification catalyst, when a plurality of catalyst coat layers are formed on the same carrier base material, the second in the direction of the exhaust gas flow. Subsequent catalyst coat layer, or when a plurality of catalysts are mounted, any one of the second and subsequent catalysts coats (platinum and / or palladium) / rhodium with a weight ratio of 1.0 or less.
- An exhaust gas purification system is provided.
- the catalyst of the present invention is disposed in the exhaust gas purification system as an underflow catalyst.
- the catalyst of the present invention is included in the start converter.
- the carrier base material is divided into a plurality of regions toward the exhaust gas flow, and the catalyst composition in the upstream (front end side) region is conventionally used.
- the catalyst composition of the three-way catalyst is the same as that of the three-way catalyst, and the ratio of the catalyst composition in the downstream side (rear end side) region can be set as described above (zone co-catalyst catalyst).
- the downstream side refers to a region from 10 to 90%, preferably from 20 to 60% of the total length of the carrier base material, entering from the gas outlet side end of the catalyst toward the gas side, particularly 50%. It means an area up to%.
- a single layer having a catalyst coat layer having the following constitution was obtained in the same manner as described in Example 1 except that a palladium nitrate solution (paradium content: 0.03 g) was used instead of the dinitrodiaminoplatinum solution.
- a single-layer underfloor catalyst (Comparative Example 3) having a catalyst coating layer having the following constitution was prepared in the same manner as described in Example 1 except that the dinitrodiaminoplatinum solution was not used.
- compositions of the catalysts of Examples 1 to 8 and Comparative Examples 1 to 3 are summarized in Table 1 below.
- the vehicle was driven with the operation mode set to LA # 4 mode, and the N0X, NMHC, C0 emission effects of the catalyst were measured. The results are shown in Table 2 below.
- the catalysts of Examples 1 to 5 improved the NOx purification performance as compared to the catalysts of Comparative Examples 1 and 2 comprising a catalyst coat layer having a high platinum ratio.
- the NOx emission value was significantly reduced when the ratio was low as in the case of platinum.
- Comparative Example 3 when rhodium was used as the sole catalyst component without using platinum (Comparative Example 3), not only the NOX emission value but also the purification performance of the other components was inferior compared to the catalyst of the Example. became.
- the present invention showed a decrease in N O X emission value even in the two-layer embodiment (Example 8).
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020097008673A KR101059807B1 (ko) | 2006-10-31 | 2007-10-31 | 배기가스 정화용 촉매 |
| EP07831324.4A EP2085139A4 (en) | 2006-10-31 | 2007-10-31 | Exhaust gas purifying catalyst |
| US12/447,580 US8227374B2 (en) | 2006-10-31 | 2007-10-31 | Exhaust gas purification catalyst |
| CN200780039221.8A CN101528348B (zh) | 2006-10-31 | 2007-10-31 | 用于尾气净化的催化剂 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006296447A JP5100085B2 (ja) | 2006-10-31 | 2006-10-31 | 排ガス浄化用触媒 |
| JP2006-296447 | 2006-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008054017A1 true WO2008054017A1 (en) | 2008-05-08 |
Family
ID=39344352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/071592 Ceased WO2008054017A1 (en) | 2006-10-31 | 2007-10-31 | Exhaust gas purifying catalyst |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8227374B2 (ja) |
| EP (1) | EP2085139A4 (ja) |
| JP (1) | JP5100085B2 (ja) |
| KR (1) | KR101059807B1 (ja) |
| CN (1) | CN101528348B (ja) |
| WO (1) | WO2008054017A1 (ja) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2112339A1 (de) * | 2008-04-24 | 2009-10-28 | Umicore AG & Co. KG | Verfahren und Vorrichtung zur Reinigung von Abgasen eines Verbrennungsmotors |
| KR100970337B1 (ko) * | 2008-08-04 | 2010-07-15 | 한국전력공사 | 배연 탈질용 선택적 환원 촉매 및 이의 제조방법 |
| 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 |
| US8263033B2 (en) * | 2010-02-23 | 2012-09-11 | Ford Global Technologies, Llc | Palladium-contaning oxidation catalyst |
| CN103097021B (zh) * | 2010-06-10 | 2015-03-11 | 巴斯夫欧洲公司 | 具有降低的Rh载荷的NOx存储催化剂 |
| US8557204B2 (en) | 2010-11-22 | 2013-10-15 | Umicore Ag & Co. Kg | Three-way catalyst having an upstream single-layer catalyst |
| JP5376261B2 (ja) * | 2011-03-10 | 2013-12-25 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
| US8591820B2 (en) | 2011-03-11 | 2013-11-26 | Corning Incorporated | Honeycomb filters for reducing NOx and particulate matter in diesel engine exhaust |
| JP5578369B2 (ja) * | 2011-06-24 | 2014-08-27 | トヨタ自動車株式会社 | 排ガス浄化用触媒 |
| JP6246192B2 (ja) * | 2012-06-06 | 2017-12-13 | ユミコア アクチェンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト | 三元触媒系 |
| WO2013182302A1 (en) * | 2012-06-06 | 2013-12-12 | Umicore Ag & Co. Kg | Start-up catalyst for use upstream of a gasoline particulate filter |
| BR112015020301B1 (pt) * | 2013-02-25 | 2020-12-08 | Umicore Shokubai Japan Co., Ltd. | catalisador para a purificação de gases de escape e método de purificação de gases de escape usando o mesmo |
| KR101507325B1 (ko) * | 2013-12-20 | 2015-03-31 | 희성촉매 주식회사 | 배기가스 정화용 촉매 부재 및 워시코트 |
| BR112017016618A2 (pt) * | 2015-02-05 | 2018-04-03 | Johnson Matthey Plc | composição e artigo de catalisador de três vias, sistema de escape, e, método para tratamento de um gás de escape. |
| JP6700290B2 (ja) * | 2015-02-06 | 2020-05-27 | 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 | 三元触媒及び排気システムにおけるその使用 |
| CN107939487B (zh) * | 2015-12-17 | 2020-05-01 | 徐州佳联农业发展有限公司 | 一种车辆尾气净化装置用载体 |
| EP3406322B1 (en) * | 2016-01-21 | 2022-01-05 | Cataler Corporation | Exhaust gas purification device |
| 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 |
| CN108927149A (zh) * | 2018-07-24 | 2018-12-04 | 中自环保科技股份有限公司 | 一种与scr匹配使用的lnt催化剂以及制备方法 |
| CN113275009A (zh) * | 2021-05-27 | 2021-08-20 | 安徽艾可蓝环保股份有限公司 | 一种燃气机尾气全污染物净化催化剂及其制备方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019036A (ja) * | 1983-07-12 | 1985-01-31 | Toyota Motor Corp | 排気ガス浄化用触媒 |
| JPH06170234A (ja) * | 1992-12-01 | 1994-06-21 | 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 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626672B2 (ja) * | 1987-03-05 | 1994-04-13 | 株式会社豊田中央研究所 | 排気浄化触媒及びその製造方法 |
| DE4003939A1 (de) * | 1990-02-09 | 1991-08-14 | Degussa | Katalysator fuer die reinigung der abgase von brennkraftmaschinen |
| JP2773428B2 (ja) * | 1990-11-28 | 1998-07-09 | トヨタ自動車株式会社 | 排気ガス浄化方法 |
| JPH08257405A (ja) * | 1995-03-23 | 1996-10-08 | I C T:Kk | 窒素酸化物分解用触媒およびこれを用いたディーゼルエンジン排ガス中の窒素酸化物の除去方法 |
| CN1205652A (zh) * | 1995-12-21 | 1999-01-20 | 恩格尔哈德公司 | 发动机废气处理装置及应用方法 |
| CN1239444A (zh) * | 1997-10-14 | 1999-12-22 | 株式会社五十铃陶瓷研究所 | 废气净化用催化剂 |
| US6294140B1 (en) * | 1999-04-23 | 2001-09-25 | Degussa Ag | Layered noble metal-containing exhaust gas catalyst and its preparation |
| US6846466B2 (en) * | 2000-03-22 | 2005-01-25 | Cataler Corporation | Catalyst for purifying an exhaust gas |
| 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 |
| EP1181970B1 (de) * | 2000-08-16 | 2004-02-04 | Umicore AG & Co. KG | Abgasreinigungskatalysator für motornahen Einsatz und Verfahren zu seiner Herstellung |
| US7276212B2 (en) * | 2001-10-01 | 2007-10-02 | Engelhard Corporation | Exhaust articles for internal combustion engines |
| JP4859100B2 (ja) * | 2003-04-10 | 2012-01-18 | 三井金属鉱業株式会社 | 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 |
| US7795172B2 (en) * | 2004-06-22 | 2010-09-14 | Basf Corporation | Layered exhaust treatment catalyst |
| JP2006075724A (ja) * | 2004-09-09 | 2006-03-23 | Toyota Motor Corp | 排ガス浄化用触媒 |
-
2006
- 2006-10-31 JP JP2006296447A patent/JP5100085B2/ja active Active
-
2007
- 2007-10-31 EP EP07831324.4A patent/EP2085139A4/en not_active Withdrawn
- 2007-10-31 WO PCT/JP2007/071592 patent/WO2008054017A1/ja not_active Ceased
- 2007-10-31 US US12/447,580 patent/US8227374B2/en active Active
- 2007-10-31 CN CN200780039221.8A patent/CN101528348B/zh not_active Expired - Fee Related
- 2007-10-31 KR KR1020097008673A patent/KR101059807B1/ko not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019036A (ja) * | 1983-07-12 | 1985-01-31 | Toyota Motor Corp | 排気ガス浄化用触媒 |
| JPH06170234A (ja) * | 1992-12-01 | 1994-06-21 | 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 |
Non-Patent Citations (2)
| Title |
|---|
| GREGORY S SIMS ET AL.: "Catalyst Performance Study Using Taguchi Methods", SAE TECHNICAL PAPER SERIES, 881589, 10 October 1988 (1988-10-10) |
| See also references of EP2085139A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2085139A4 (en) | 2017-04-05 |
| US20100062930A1 (en) | 2010-03-11 |
| CN101528348B (zh) | 2014-04-09 |
| EP2085139A1 (en) | 2009-08-05 |
| KR20090061669A (ko) | 2009-06-16 |
| JP2008110322A (ja) | 2008-05-15 |
| CN101528348A (zh) | 2009-09-09 |
| JP5100085B2 (ja) | 2012-12-19 |
| US8227374B2 (en) | 2012-07-24 |
| KR101059807B1 (ko) | 2011-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2008054017A1 (en) | Exhaust gas purifying catalyst | |
| KR101337934B1 (ko) | 이중층 삼원 촉매 | |
| JP6440771B2 (ja) | 排ガス浄化触媒装置 | |
| JP4838258B2 (ja) | 排ガス浄化用触媒 | |
| KR101006220B1 (ko) | 배기가스 정화용 촉매 | |
| JP5021188B2 (ja) | 排ガス浄化用触媒 | |
| JP5996538B2 (ja) | 改善されたno酸化活性度を有するリーン燃焼ガソリンエンジン用の触媒 | |
| JP6246192B2 (ja) | 三元触媒系 | |
| JP2009541041A (ja) | 三元触媒 | |
| JP2012035206A (ja) | 排ガス浄化触媒 | |
| CN104005821B (zh) | 废气用催化装置 | |
| JP5663307B2 (ja) | 排ガス浄化用触媒 | |
| JP2006159021A (ja) | 排ガス浄化用触媒 | |
| JP4413366B2 (ja) | 排気ガス浄化用触媒 | |
| US11352924B2 (en) | Exhaust gas purification catalyst device | |
| WO2018199250A1 (ja) | 排気ガス浄化用触媒およびそれを用いた排気ガス浄化方法 | |
| WO2012121388A1 (ja) | 触媒の製造方法及び触媒 | |
| JP2003080081A (ja) | 排ガス浄化用触媒 | |
| JP4980987B2 (ja) | 排ガス浄化用触媒 | |
| WO2021166699A1 (ja) | 排ガス浄化触媒装置 | |
| JP2023135093A (ja) | 排ガス浄化用触媒の製造方法 | |
| JPH09225306A (ja) | 排ガス浄化用触媒及びその製造方法 | |
| JP2008029970A (ja) | ガス浄化触媒 | |
| RU2020111942A (ru) | Однослойный катализатор с низкой нагрузкой покрытия из пористого оксида для очистки выхлопного газа бензинового двигателя |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 200780039221.8 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07831324 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2007831324 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 12447580 Country of ref document: US Ref document number: 1020097008673 Country of ref document: KR |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |

