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中文摘要：
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．
英文摘要：
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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