纳米复合金属氧化物作为一种重要的甲烷燃烧催化剂，由于存在活性、抗积碳及抗烧结性能差等问题一直严重阻碍其应用。本项目拟设计和制备镍铈纳米粒子限域在配体修饰后的介孔硅壁中的复合催化材料，以此提升催化剂的活性、抗积碳及抗烧结能力。首先，制备不同形貌的镍铈纳米粒子，并采用模板导向剂将其导入介孔SiO2孔道中；然后，用不同的氧基硅烷配体对其表面进行修饰，改善镍铈纳米粒子的表面化学环境；以甲烷氧化反应为模型，运用各种表征技术揭示镍铈纳米粒子的形貌、结构、氧基硅烷配体与活性组分表面的相互作用机制对NiO/CeO2@ligand-SiO2催化剂活性、抗积碳及抗烧结性能的影响规律；建立NiO/CeO2@ligand-SiO2在催化反应中的构-效关系。本项目的实施对推动纳米合金粒子的限域效应在催化领域的应用具有重要意义，同时也丰富了抗烧结型纳米催化剂的制备方法。

Nano composite metal oxide is one of important catalyst for methane combustion. However, practical applications have been impeded seriously by some problems such as low activity, poor performance of anti-carbon and anti-sintering. In this project, composite materials of nickel cerium nanoparticles confined in mesoporous silica modified by ligand will be designed and prepared in order to improve the activity, anti-carbon and anti-sintering property of the obtained catalyst. Firstly, the NiO/CeO2 nanoparticles with different morphologies would be prepared and the template was used to introduce them into the mesoporous SiO2 channels. Then, using different oxygen based silane ligands modify the surface chemical environment of NiO/CeO2. Selecting the methane oxidation as the model reaction, systemically studied the impact of nickel ceria nanoparticles morphology, structure, interaction mechanism between the silane ligands and the surface active group on the activity and stability of NiO/CeO2@ligand-SiO2 catalyst by using various characterization techniques. Furthermore, the structure-activity relationship of NiO/CeO2@ligand-SiO2 in the catalytic reaction will be established. The implementation of this project has important significance on promoting the application of nano alloy particles in the field of catalysis. Additionally, it will also enrich the preparation method of anti-sintering nano catalyst.