Medium-Coupled Catalysts that Meet the Euro V Emission Standard for Gasoline Vehicles

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (4): 316-318.

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Medium-Coupled Catalysts that Meet the Euro V Emission Standard for Gasoline Vehicles

YAO Yanling, SHI Zhonghua*, SONG Weicong, YUAN Shuhua, GONG Maochu, CHEN Yaoqiang

Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China

Received:2008-04-25 Online:2008-04-25 Published:2012-03-22

Abstract

Abstract: The Ce0.65Zr0.25Y0.07La0.03O1.95oxygen storage material and La-stabilized alumina (La-Al2O3) were prepared. After aging at1000℃ for5 h, Ce0.65Zr0.25Y0.07La0.03O1.95maintains excellent textural and oxygen storage properties, and after calcination at 900 ℃ for4 h, La-Al2O3 has superior textural properties. Medium-coupled Pt-Pd-Rh monolithic catalysts were prepared by impregnating Ce0.65Zr0.25Y0.07La0.03O1.95and La-Al2O3 with Pt(NO3)2, Pd(NO3)2, and Rh(NO3)3 solutions and then washcoating on the cordierite honeycomb. The medium-coupled catalysts show high low-temperature activity and good thermal stability. The results from the emission test of a JETTA-MT vehicle show that the catalysts can meet EuroⅤ emission requirements.

Key words: oxygen storage material, lanthanum-stabilized alumina, medium-coupled catalyst, vehicle test

YAO Yanling;SHI Zhonghua*;SONG Weicong;YUAN Shuhua;GONG Maochu;CHEN Yaoqiang. Medium-Coupled Catalysts that Meet the Euro V Emission Standard for Gasoline Vehicles[J]. Chinese Journal of Catalysis, 2008, 29(4): 316-318.

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Medium-Coupled Catalysts that Meet the Euro V Emission Standard for Gasoline Vehicles

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