介孔材料负载纳米镍基合金催化水合肼分解制氢研究

项目名称： 介孔材料负载纳米镍基合金催化水合肼分解制氢研究

项目编号： No.51471168

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 戴洪斌

作者单位： 华南理工大学

项目金额： 85万元

中文摘要： 项目选取水合肼这一颇具车载/移动氢源应用潜力的新型化学氢化物为研究对象，拟重点围绕介孔材料负载纳米镍基合金催化剂的制备、催化剂的合金化改性机理以及水合肼催化分解反应动力学开展研究。拟采用蒸发诱导自组装和共沉淀等方法制备具有不同化学组成、介孔结构特征并富含强碱性位的负载型纳米镍基合金催化剂；研究制备工艺对催化剂形貌、微观结构、物相组成及表面电子结构的影响规律；结合实验研究与理论计算，建立催化剂成分-结构-性能的内在关联。优选性能优异的催化剂构建水合肼催化分解制氢体系，系统考察反应条件对体系反应速率和制氢选择性的影响，结合实验测试与理论模型分析揭示水合肼催化分解反应动力学规律。本项目研究将为发展实用型水合肼催化分解制氢技术奠定实验/理论基础。

中文关键词： 储氢材料；水合肼；镍基合金催化剂；介孔材料；制氢

英文摘要： The present project focuses on catalytic decomposition of hydrous hydrazine, a promising hydrogen generation system for on-board/mobile applications. The three key issues to be addressed are preparation of nanosized Ni-based alloy catalysts supported on mesoporous materials, elucidation of the mechanism of property modification arising upon alloying of the catalyst, and kinetic study of catalytic decomposition of hydrous hydrazine. By using evaporation-induced self-assembly and co-precipitation methods, a series of Ni-based alloy catalysts will be prepared, which are composed of tiny alloy nanoparticles immobilized on mesoporous supports containing strongly basic sites. The effects of preparation conditions on the morphology, microstructure, phase structure and surface electronic structure of the catalysts will be studied systematically. The composition-structure-property correlations of the Ni-based catalysts will be established on the basis of the coupled experimental and theoretical studies. The hydrous hydrazine-based hydrogen generation system will be constructed using Ni-based alloy catalyst with an optimal catalytic performance, and the effects of reaction conditions on reaction rate and hydrogen selectivity will be studied in detail. The reaction kinetics of catalytic decomposition of hydrous hydrazine will be studied by coupling experimental testing and theoretical model analysis. The studies conducted in the present project may lay experimental and theoretical foundations for the development of practical hydrous hydrazine-based hydrogen generation system.

英文关键词： Hydrogen storage material;Hydrous hydrazine;Nickel-based alloy catalyst;Mesoporous material;Hydrogen generation