催化释氢导向的多元合金/镶嵌结构高活性晶面选择性合成及其机理研究

项目名称： 催化释氢导向的多元合金/镶嵌结构高活性晶面选择性合成及其机理研究

项目编号： No.91222103

项目类型： 重大研究计划

立项/批准年度： 2013

项目学科： 无机化学

项目作者： 温鸣

作者单位： 同济大学

项目金额： 70万元

中文摘要： 本项目针对VIII族金属多元晶态合金体系，建立一种“相转移还原-导向剂调控-溶剂热方法”，并拟用该方法实现磁性多元合金/镶嵌结构高活性晶面选择性合成；以催化释氢为导向，通过对合金组成、相转移过程、导向剂调控、镶嵌方式等实验条件的优化，获得一系列表面为高活性晶面的磁性多元合金释氢催化材料；以硼氢化合物类化学储氢材料为对象，利用“多组元间的协同效应”和“表面电子结构效应”来提高其释氢催化性能，并拓展多功能性。研究该类晶态多元合金的组成比与催化释氢、表面结构与催化释氢、镶嵌结构与催化释氢等多角度构效关系，揭示这类新结构磁性晶态合金的形成与催化释氢机理，实现定点、延棱、选面的高效可控催化释氢，为具有高效、经济和长寿命合金催化剂的研究提供科学指导。该研究的实施不仅探索了一条多元合金/镶嵌结构高活性晶面选择性合成的新思路，而且为化学储氢材料温和条件下的高效可控释氢及氢能的利用开拓了新的道路。

中文关键词： 多元合金晶体；镶嵌结构；催化释氢；晶面选择性合成；形成机理

英文摘要： Aims at VIII group multi-component alloy system, this project establishes one method of “phase transfer reduction- director reagent controlling-solvothermal”, and plane to realize the high active crystal plane selective synthesis of magnetic multi-component alloy / inlay-structure; Oriented by dehydrogenation catalysis, the series of magnetic alloy dehydrogenation catalysis materials surrounded by active crystal surface can be prepared via the optimization of reaction conditions, such as alloy composition，phase transfer process, director reagent controlling, inlay process, and so on. The dehydrogenation catalysis and further multi-functions can be improved by “synergistic effect of multi-component” and “surface electron structure effect”. Through the investigation of multi-aspect structure-activity relationship about alloy composition and dehydrogenation catalysis, surface structure and dehydrogenation catalysis, inlay-structure and dehydrogenation catalysis, it can be uncover the formation of this new structured magnetic crystal alloys and dehydrogenation catalysis mechanism, and further control the high efficient catalysis of dehydrogenation at fixed points, along edges and selective planes. It will provide the scientific guidance for development of crystal alloy catalyst with high efficiency, low cost and lon

英文关键词： multicomponent alloy crystal；inlay structure；Hydrogen generation catalyze；Crystal selectivity synthesis；Formation mechanism