催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (5): 401-403.

• 研究快讯 • 上一篇    下一篇

满足欧Ⅲ排放标准的压缩天然气汽车中偶催化剂

袁书华1,王永军2,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:2007-05-25 出版日期:2007-05-25 发布日期:2011-04-28

Medium-Coupled Catalysts Meeting Euro Ⅲ Emission Standards for Condensed Natural Gas Vehicles

YUAN Shuhua1, WANG Yongjun2, 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:2007-05-25 Online:2007-05-25 Published:2011-04-28

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摘要： 制备了具有高性能的稀土储氧材料Ce0.45Zr0.45Y0.05La0.05O2和耐高温大比表面积材料La-Al2O3, 并以此为基础制备了Pt-Rh型中偶压缩天然气汽车尾气净化催化剂. 催化剂对模拟尾气具有较高的催化活性和稳定性,在捷达-MT型压缩天然气汽车上的测试结果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, 压缩天然气, 汽车尾气净化, 中偶催化剂, 整车实验

Abstract: The Ce0.45Zr0.45Y0.05La0.05O2 oxygen storage material and La-stabilized alumina (La-Al2O3) were prepared. After aging at1000℃ for5 h, Ce0.45Zr0.45Y0.05La0.05O2 maintains superior textual and oxygen storage properties, and La-Al2O3 shows superior textual properties. Medium-coupled Pt-Rh monolithic catalysts for condensed natural gas (CNG) vehicles were prepared by impregnating Ce0.45Zr0.45Y0.05La0.05O2 and La-Al2O3 with H2PtCl6 and RhCl3 solutions and then washcoated on the cordierite honeycomb. The medium-coupled catalysts showed high activity at low temperature and thermal stability. The results from the emission test of JETTA-MT CNG vehicle indicated that the prepared catalysts were capable of fulfilling Euro Ⅲ requirements.

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