Durability of three-way and close-coupled catalysts for Euro Ⅳ regulation

稀土学报(英文版), 2008, 26(6): 827-830.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianfin University, Tionjin 300072,China;Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, China

2.Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianfin University, Tionjin 300072,China

3.Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianfin University, Tionjin 300072,China

4.Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, China

5.Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, China

6.Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, China

基金项目: 江苏省自然科学基金(BK2008532) Jiangsu Province Planned Projects for Postdoctoral Research Funds(0702054C) 国家高技术研究发展计划(863计划)(2006AA060305) 国家博士后科学基金(20070410196)

Durability of three-way and close-coupled catalysts for Euro Ⅳ regulation

JIA Liwei ^1, , SHEN Meiqing ^2, , WANG Jun ^3, , WANG Jiaming ^4, , CHU Xia ^5, , GU Weiwei ^6,

2.Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianfin University, Tionjin 300072,China

3.Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianfin University, Tionjin 300072,China

4.Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, China

5.Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, China

6.Weifu Environmental Catalysts Co., Ltd., Wuxi 214028, China

Keywords： three-way catalyst

The durability of three-way catalyst (TWC) and corresponding close-coupled catalyst (CCC) for Euro Ⅳ stage regulation was in-vestigated through Vehicle Road Running Mode tests, whereas emissions of regulated pollutants of three car fleet were investigated at every 100,000 km miles. The results showed that HC, NOx, and CO emission values could meet Euro Ⅳ regulation limits at every point. The redox properties of TWC and CCC were measured by CO reduction during each isothermal. It was obvious that both aged TWC and aged CCC behaved a good redox property at 673 and 773 K. Based on XRD and BET measurement results, TWC and CCC washcoat were character-ized with good thermal stability.

参考文献

[1]	Gandhi HS.;Graham GW.;McCabe RW. .Automotive exhaust catalysis[J].Journal of Catalysis,2003(1/2):433-442.
[2]	Skoglundh M;Fridell E .Strategies for enhancing low-temperature activity[J].Topics in Catalysis,2004,28:79.
[3]	Heck R;Farrauto R .Automotive exhaust catalysis[J].Applied Catalysis A:General,2001,221:443.
[4]	Collins N;Chandler G;Brisley R .Catalyst Improvements to Meet European Stage Ii and Ulev Emissions Criteria[R].SAE,1996.
[5]	Mamontov E;Egami T .Lattice defects and oxygen storage capacity of nanocrystalline ceria and ceria-zirconia[J].Journal of Physical Chemistry,2000,104:11110.
[6]	Shen Meiqing,Wang Xinquan,An Yuan,Weng Duan,Zhao Minwei,Wang Jun.Dynamic Oxygen Storage Capacity Measurements on Ceria-Based Material[J].稀土学报（英文版）,2007(01):48-52.
[7]	Wu Xiaodong;Fan Jun;Ran Rui;Weng Duan .Effect of preparation method on the surface and redox properties of Ceo[J].67Zr0 3302 mixed oxides[J].Journal of Alloys and Compounds,2005,395:135.
[8]	Jia Liwei;Shen Meiqing;Hao Jingjingl .Dynamic oxygen storage and release over Mn0.1Ce0.9Ox and Mn0.1Ce0.6Zr0.3Ox complex compounds and structural characterization[J].Journal of Alloys and Compounds,2008,454:321.
[9]	Jia Liwei;Shen Meiqing;Wang Jun .Preparation and characterization of dip-coated γ-alumina based ceramic materials on FeCrAl foils[J].Surface and Coatings Technology,2007,201:7159.

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

Durability of three-way and close-coupled catalysts for Euro Ⅳ regulation

参考文献