催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (2): 97-99.

• 研究论文 •    下一篇

满足欧Ⅲ排放标准的汽油车中偶催化剂

王永军2,袁书华1,史忠华1,赵明1,龚茂初1,刘忠长3,陈启章4,陈耀强1   

  1. 1 四川大学化学学院, 四川成都 610064; 2 一汽大众汽车有限公司, 吉林长春130011; 3 吉林大学汽车学院, 吉林长春130025; 4 四川中自尾气净化有限公司, 四川成都 610046
  • 收稿日期:2007-02-25 出版日期:2007-02-25 发布日期:2011-01-28

Medium-Coupled Catalysts Meeting Euro Ⅲ Emission Standards for Gasoline Vehicles

WANG Yongjun2, YUAN Shuhua1, SHI Zhonghua1, ZHAO Ming1, GONG Maochu1, LIU Zhongchang3, CHEN Qizhang4, CHEN Yaoqiang1*   

  1. 1 College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China; 2 FAW-VW Automobile Co., Ltd., Changchun 130011, Jilin, China; 3 Faculty of Automobile, Jilin University, Changchun 130025, Jilin, China; 4 Sichuan Zhongzi Exhaust Purification Company, Ltd., Chengdu 610046, Sichuan, China
  • Received:2007-02-25 Online:2007-02-25 Published:2011-01-28

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摘要： 制备了高性能稀土储氧材料Ce0.5Zr0.4Y0.1O2和镧稳定的氧化铝(La-Al2O3), 并以此为基础制备了中偶汽油车尾气净化催化剂. 经老化前后的性能检测证实,稀土储氧材料具有优异的织构性能和储氧性能且高温稳定性优良; La-Al2O3具有优异的织构性能及优异的抗高温老化性能. 中偶催化剂对HC, CO和NOx具有优异的低温活性、抗高温老化性能和低的劣化系数. 捷达-MT型汽油车排放检测表明该催化剂能够满足欧Ⅲ排放标准.

关键词: 稀土储氧材料, 镧稳定的氧化铝, 尾气净化, 中偶催化剂, 整车试验

Abstract: The Ce0.5Zr0.4Y0.1O2 oxygen storage material and La-stabilized alumina (La-Al2O3) were prepared. After aging at 1000 ℃ for 5 h, Ce0.5Zr0.4Y0.1O2 maintains superior textual and oxygen storage properties, and La-Al2O3 has superior textual properties. Medium-coupled Pd-Rh monolithic catalysts were prepared by impregnating Ce0.5Zr0.4Y0.1O2 and La-Al2O3 with H2PtCl6 and RhCl3 solutions and then washcoated on the cordierite honeycomb. The medium-coupled catalysts show high low-temperature activity and thermal stability. The results from the emission test of JETTA-MT vehicle show to fulfill Euro Ⅲ requirements.

Key words: rear earth oxygen storage material, lanthanum-stabilized alumina, exhaust gas purification, medium-coupled catalyst, vehicle test