满足欧Ⅲ排放标准的汽油车中偶催化剂  

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

作　　者：王永军 袁书华[2] 史忠华[2] 赵明[2] 龚茂初[2] 刘忠长[3] 陈启章[4] 陈耀强[2] 

机构地区：[1]一汽大众汽车有限公司,吉林长春130011 [2]四川大学化学学院,四川成都610064 [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2期97-99,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：制备了高性能稀土储氧材料Ce_(0.5)Zr_(0.4)Y_(0.1)O_2和镧稳定的氧化铝(La-Al_2O_3),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-Al_2O_3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NO_x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.The Ce0.5Zr0.4Y0.1O2 oxygen storage material and La-stabilized alumina （La-Al2O3） were prepared. After aging at 1 000 ℃ 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 resuits from the emission test of JETTA-MT vehicle show to fulfill Euro Ⅲ requirements.

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 

分 类 号：O643.36[理学—物理化学]