分解
酰亚胺
锂(药物)
化学
动力学
化学分解
活化能
氢气储存
晶格常数
氢
物理化学
材料科学
无机化学
衍射
高分子化学
有机化学
物理
内分泌学
光学
医学
量子力学
作者
Junqing Zhang,Yun Hang Hu
标识
DOI:10.1016/j.ijhydene.2011.12.061
摘要
The decomposition of lithium imide (Li2NH) is an important step for hydrogen storage in Li3N. In this paper, the decomposition of Li2NH was investigated by using temperature-programmed decomposition (TPD) and X-ray diffraction (XRD) techniques. It was found that the decomposition of Li2NH produced Li, N2 and H2 via two steps: Li2NH into an intermediate species—Li4NH and then into Li. The kinetic analysis of Li2NH decomposition showed that the activation energies are 533.6 kJ/mol for the first step and 754.2 kJ/mol for the second step. Furthermore, XRD demonstrated that the Li4NH, which was generated in the decomposition of Li2NH, formed a solid solution with Li2NH. In the solid solution, Li4NH possesses a similar cubic structure as Li2NH. The lattice parameter of the cubic Li4NH is 0.5033 nm.
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