稀燃CNG车具有高的效率和低的NOx排放而被广泛使用，但低的尾气温度，高的水蒸气浓度和CH4高的结构稳定性使尾气净化极具挑战性。针对稀燃CNG尾气净化催化剂的稳定性问题和H2O对催化活性的抑制作用, 研究锆锌复合纳米催化材料的制备过程及其与结构，织构和性能的关系；研究材料的相界面特征，表面状态及高温老化对材料的结构、织构及性能的影响，制备出对稀燃CNG车性能优异的锆锌复合纳米催化材料。研究Pd等活性组分及助剂与锆锌复合纳米材料的相互作用规律及制备条件对催化性能的影响，制备出高性能催化剂。研究稀燃CNG车催化剂的催化性能及抗老化性能，不同类型的反应的耦联规律，CH4和H2O在催化剂上的吸附物种及演变规律，揭示催化剂的抗老化规律及其稳定性控制机制，H2O对催化活性抑制作用的本质及消除或减缓机制，发展稀燃CNG车尾气净化高性能催化材料和催化剂的制备科学和技术。

Lean-burn CNG vehicle is widely applied owing to its high efficiency and low NOx emission, but the low exhaust temperature, high concentration of vapor and high structural stability of CH4 make the purification of exhaust a great challenge. Considering the stability of lean-burn CNG exhaust purification catalyst and the inhibition of H2O on the catalytic activity, the relationship between the synthesis process of Zirconia-Zinc mixed nano catalytic material and its textural,structural properties, the influences of phase interface characteristic, surface state and high-temperature aging on the textural and structural properties of the materials are to be investigated, accordingly Zirconia-Zinc mixed nano catalytic material with high performance is obtained. In addition, the interaction between active components including Pd, the promoters and the composite nanomaterials, as well as the influence of the synthesis condition on the catalytic performance, will be investigated, and thus developing catalysts with excellent performance. Furthermore, the catalytic performance and anti-aging performance of the lean-burn CNG catalysts, the couple regulation of different reactions, the adsorbed species and the evolution of CH4 and H2O on the catalyst are going to be investigated. The anti-aging regulation and the control mechanism of the stability of the catalysts,the essence of inhibition of H2O on the catalytic performance will be disclosed. Finally, the science and technology of the preparation of the catalytic materials and catalysts for elimination of high performance lean-burn CNG exhaust are developed.