Structural and Compositional Changes during Hydrogenation/Dehydrogenation of the Li-Mg-N-H System

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• 作者：Jianjiang Hu ; Yongfeng Liu ; Guotao Wu ; Zhitao Xiong ; Ping Chen
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：December 13, 2007
• 年：2007
• 卷：111
• 期：49
• 页码：18439 - 18443
• 全文大小：147K
• 年卷期：v.111,no.49(December 13, 2007)
• ISSN：1932-7455

文摘

Structural and compositional changes in the Li-Mg-N-H system have been studied by probing the pressurecomposition isotherms at different hydrogenation/dehydrogenation stages. The results of X-ray diffractometryand Fourier transform infrared spectroscopy show that LiNH₂ and a ternary imide with the composition Li₂Mg₂(NH)₃ are reversibly formed and consumed in the hydrogen absorption/desorption processes. Chemicalreactions have been proposed for hydrogen absorption and desorption, accordingly. The formation of solidsolutions in the system is assumed based on structure and phase analysis.