基于瓜环的贵金属纳米催化剂的制备及其在(杂)芳环C-H活化反应中的催化性能研究

项目名称： 基于瓜环的贵金属纳米催化剂的制备及其在(杂)芳环C-H活化反应中的催化性能研究

项目编号： No.21203199

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理化学

项目作者： 曹敏纳

作者单位： 中国科学院福建物质结构研究所

项目金额： 25万元

中文摘要： 相对于传统催化材料，纳米材料的独特优势使其在催化领域极具光明前景。而纳米科技的发展也为纳米催化领域带来了新的契机。目前，揭示纳米催化机理以及合理设计并制备高效、高选择性，能够多次循环使用以及低能耗的纳米催化剂是纳米催化领域的主要任务。瓜环是近年来备受瞩目的大环状化合物，其独特的结构特征和物理、化学性质使其在纳米催化领域具有潜在的优势。本项目拟采用液相合成法，采用瓜环作为载体和保护剂，设计并制备出形貌可控的贵金属纳米催化剂，催化(杂)芳环碳-氢活化官能团化反应。通过对还原剂种类、瓜环与金属前驱体之间的比例、成核速度、生长速度等动力学因素的调节来探索高效高选择性纳米催化剂的制备条件；并深入研究纳米催化剂的结构和性能之间的构效关系，探索纳米催化机理以及瓜环在催化过程中的作用。这为瓜环在纳米科技领域中的应用以及纳米催化剂在直接碳-氢活化官能团化反应中的应用提供实验依据。

中文关键词： 瓜环；C-H键活化；纳米催化；构效关系；贵金属

英文摘要： Since nanomaterials have unique advantages compared to traditional catalytic materials, they are attractive candidates for use as catalysts with the most promising future. Now，exciting new opportunities are emerging in the field of catalysis based on nanotechnology approaches. Presently，fundamental understanding of mechanism of nanocatalysis as well as rational design and fabrication of nanocatalysts with extremely high activity and selectivity, long lifetime, and low energy consumption are key objectives of nanocatalysis. Cucurbit[n]uril(CB[n]) is a family of macromolecules and has gain much attention in recent years for their unique structural features and physicochemical properties. These distinguishing features ensure a potential applications in nanocatalysis for CB[n]. This project will design and synthesize nanocatalysts for direct functionalization of (hetero)arenes by C-H bond cleavage by using CB[n] as protecting agents and support with liquid phase methods.. This goal can be achieved by precisely controlling the size, shape, spatial distribution, surface composition and electronic structure of the nanocatalysts. Through this project to explore the fabrication conditions for nanocatalysts with high activity and selectivity, such as changing reducing agents, the molar ratio of CB[n] and metal precursor,

英文关键词： Cucurbit[n]uril；C-H Bond Activation；Nanocatalysis；Structure-activity Relationship；Noble Metal