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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Professor in Process Mechanics
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：制造工艺力学. 工程力学. 计算力学
办公地点：综合实验1号楼619
联系方式：0411-84708432
电子邮箱：zhangz@dlut.edu.cn
Metathesis of Mg2FeH6 and LiNH2 leading to hydrogen production at low temperatures
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论文类型：期刊论文
发表时间：2018-04-21
发表刊物：PHYSICAL CHEMISTRY CHEMICAL PHYSICS
收录刊物：SCIE
卷号：20
期号：15
页面范围：9833-9837
ISSN号：1463-9076
摘要：Mg2FeH6 with a purity of up to 94.5 wt% was synthesized and its interaction with LiNH2 was investigated in this study. It was found that Li4FeH6, normally synthesized by hydriding a mixture of LiH and Fe at 700 degrees C and 5.5 GPa H-2 pressure, can be formed via ball-milling Mg2FeH6 and LiNH2 under ambient conditions following the reaction of Mg2FeH6 + 4LiNH(2) -> Li4FeH6 + 2Mg(NH2)(2), Delta H = -92.8 kJ mol(-1). The formation of Li4FeH6 was confirmed by XRD, FTIR and Mossbauer spectroscopic characterization. Li4FeH6 further reacts with 2Mg(NH2)(2) releasing ca. 4.8 wt% H-2 at 225 degrees C and reabsorbing 3.7 wt% H-2 at 200 degrees C and 50 bar H-2 pressure. Mg(NH2)(2), LiH and Fe are the hydrogenated products.