生物质的高选择性转化是非石油类碳资源高效利用研究中的重要课题。生物质本身含氧量 高、转化路径复杂，高选择性得到目标产物非常困难。本项目从催化材料本身入手，以金属纳米颗粒为核、沸石骨架为壳来设计合成沸石包裹金属颗粒的核壳结构催化材料。通过在无溶剂条件下晶化，可以高效的合成这类材料，它们结合了金属中心的高催化活性和沸石孔道的优异择形性，有效提高了生物质加氢产物选择性。在此基础上，总结沸石孔道的拓扑结构影响产物选择性的规律，阐明金属和沸石孔道的协同作用机制，为制备性能优异的新型催化材料提供科学基础。

The conversion of biomass with high selectivity is an important topic in the utilization of non-fossil oil carbon resources. The biomass feedstocks have high oxygen content and complex conversion routes, making it very difficult to obtain desired products with high selectivity. This project focuses on the design and synthesis of new zeolite encapsulated metal nanoparticle catalysts with a core-shell structure, where the metal nanoparticles act as the core and zeolite framework acts as the shell. By crystallization under solvent-free conditions, these catalysts could be efficiently synthesized. By combining the advantages including high activity of metal nanoparticles and excellent selectivity of zeolite micropores, zeolite encapsulated metal nanoparticle catalysts exhibit high selectivity in the hydrogenation of biomass feedstocks. Based on these results, we will understand the relationship between the structure of zeolite micropores and the product selectivities in biomass hydrogenation, and intensively study the mechanism together with cooperation between metal sites and zeolite micropores. This project will provide scientific bases for the synthesis of new catalysts with excellent properties.