Structural and compositional changes during hydrogenation/dehydrogenation of the Li-Mg-N-H system

被引：88

作者：

Hu, Jianjiang

Liu, Yongfeng

Wu, Guotao

Xiong, Zhitao

Chen, Ping ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 117542, Singapore

[2] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 49期

关键词：

D O I：

10.1021/jp075757s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Structural and compositional changes in the Li-Mg-N-H system have been studied by probing the pressure composition isotherms at different hydrogenation/dehydrogenation stages. The results of X-ray diffractometry and Fourier transform infrared spectroscopy show that LiNH2 and a ternary imide with the composition Li-2-Mg-2(NH)(3) are reversibly formed and consumed in the hydrogen absorption/desorption processes. Chemical reactions have been proposed for hydrogen absorption and desorption, accordingly. The formation of solid solutions in the system is assumed based on structure and phase analysis.

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收藏

页码：18439 / 18443

页数：5

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