满足欧Ⅲ排放标准的压缩天然气汽车中偶催化剂  

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

作　　者：袁书华[1] 王永军 史忠华[1] 赵明[1] 龚茂初[1] 刘忠长[3] 陈启章[4] 陈耀强[1] 

机构地区：[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

出　　处：《催化学报》2007年第5期401-403,共3页

基　　金：国家自然科学重点基金(20333030);国家自然科学基金(20273043).

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.The Ce0.45 Zro.45 Yo.05 Lao.05 02 oxygen storage material and La-stabilized alumina （La-Al2O3） were prepared. After aging at 1 000 ℃ for 5 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 Ce0.45 Zr0.45 Y0.05 La0.05O2 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 JET- TA-MT CNG vehicle indicated that the prepared catalysts were capable of fulfilling Euro Ⅲ requirements.

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 

分 类 号：TQ426.96[化学工程]