| Ce-Zr-La-Al2O3的制备及负载的单Pd三效催化剂 |
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| 引用本文： | 蔡黎,赵明,皮展,龚茂初,陈耀强. Ce-Zr-La-Al2O3的制备及负载的单Pd三效催化剂[J]. 催化学报, 2008, 29(2): 108-112 |
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| 作者姓名： | 蔡黎 赵明 皮展 龚茂初 陈耀强 |
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| 作者单位： | 四川大学化学学院,四川成都,610064 |
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| 基金项目： | 国家自然科学基金(20333030)，国家高技术研究发展计划(863计划,2007AA06Z347) |
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| 摘 要： | 采用共沉淀和浸渍两种方法制备了Ce-Zr-La-Al2O3(CZLA),对其进行了N2吸附和X射线衍射分析.以CZLA为载体制备了2%Pd/CZLA三效催化剂,并对催化剂进行了程序升温还原和活性测试.结果表明,两种方法制备的CZLA均具有较好的结构、织构和储氧性能,共沉淀法制备的CZLA具有更好的抗老化性能.以CZLA为载体所制备的单Pd三效催化剂表现出低的起燃温度、优异的三效性能,特别是优异的转化NO性能及抗老化性能.
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| 关 键 词： | 铈 锆 镧 氧化铝 钯 三效催化剂 反应温度 抗老化性能 |
| 文章编号： | 0253-9837（2008）02-0108-05 |
| 收稿时间： | 2007-07-11 |
| 修稿时间： | 2007-07-11 |
Preparation of Ce-Zr-La-Al2O3 and Supported Single Palladium Three-Way Catalysts |
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| CAI Li,ZHAO Ming,PI Zhan,GONG Maochu,CHEN Yaoqiang. Preparation of Ce-Zr-La-Al2O3 and Supported Single Palladium Three-Way Catalysts[J]. Chinese Journal of Catalysis, 2008, 29(2): 108-112 |
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| Authors: | CAI Li ZHAO Ming PI Zhan GONG Maochu CHEN Yaoqiang |
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| Abstract: | Ce-Zr-La-Al2O3 (CZLA) was prepared by co-precipitation and incipient wet impregnation methods and characterized by N2 adsorption and X-ray diffraction. 2%Pd/CZLA catalysts were prepared and studied by temperature-programmed reduction and activity tests. The CZLA supports prepared by the two methods showed good structural,textural,and oxygen storage properties,and the CZLA prepared by co-precipitation was more resistant to aging. The single Pd catalysts showed low light-off temperature and high three-way catalytic activity,especially the excellent NO conversion and aging resistance. |
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| Keywords: | cerium zirconium lanthanum alumina palladium three-way catalyst reation temperature aging resistance |
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