铂族金属纳米颗粒的形貌与其不对称催化氢化性能的构效关系研究

项目名称： 铂族金属纳米颗粒的形貌与其不对称催化氢化性能的构效关系研究

项目编号： No.21273289

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 黄涛

作者单位： 中南民族大学

项目金额： 80万元

中文摘要： 研究不同形貌铂族金属纳米簇的不对称催化氢化性能，考察铂族金属纳米颗粒的形貌与其不对称催化氢化性能间的构效关系。结合不同铂族金属对C=C和C=O双键不对称氢化选择性的差异，利用金鸡纳碱修饰的不同形貌金属Pd、Pt纳米颗粒催化前手性α,β-不饱和酸和α-酮酸酯的不对称氢化反应，研究不同形貌铂族金属纳米颗粒与手性修饰剂及反应底物的相互作用，分析溶剂、修饰剂及反应底物在不同形貌铂族金属纳米颗粒表面的吸附行为，考察在一定形貌铂族金属纳米颗粒表面上反应底物的吸附模式、吸附强度、中间产物的脱附、副产物的脱附，理解手性微环境及活性位点与反应底物间的关系，阐明铂族金属纳米颗粒的形貌、表面组成和表面电子结构对不对称氢化反应的催化活性及对映选择性的影响，探讨不同形貌铂族金属催化不对称氢化反应的作用机理，揭示铂族金属纳米颗粒形貌与其不对称催化氢化性能间相关性的规律，为建立新型、高效的多相不对称催化体系提供新途径。

中文关键词： 铂族金属；合金；纳米晶；形貌；催化性质

英文摘要： Study on the catalytic properties of platinum group metal nanoparticles with different morphologies and the structure-activity relationship between their morphologies and their catalytic performance for the asymmetric hydrogenation. Considering the difference of the enantioselectivity of the asymmetric hydrogenation of C=C and C=O, the cinchona alkaloid-modified platinum group metal nanoparticles with different morphologies will be used in the asymmetric catalytic hydrogenation of prochiral α,β-unsaturated acids and α-ketoesters. The interaction among platinum group metal nanoparticles with different morphologies, chiral modifier and substrate will be studied. The adsorption behaviors of solvent, chiral modifier, substrate on the surfaces of platinum group metal nanoparticles with different morphologies will be analysed. The adsorption modes and strength of the substrate molecules adsorbed to the surfaces of platinum group metal nanoparticles as well as desorption of the intermediate products and by-products will be also investigated. It will try to understand the interaction between substrate and chiral microenvironment or active sites, explain the effects of the morphologies, surface compositions and surface electronic structures of the metal nanoparticles on the catalytic activity and enantioselectivity of th

英文关键词： Platinum group metal；Alloy；Nanocrystal；Morphology；Catalytic property