Synthesis and decomposition reactions of metal amides in metal-N-H hydrogen storage system

H. Y. Leng*, T. Ichikawa, S. Hino, N. Hanada, S. Isobe, H. Fujii

*この研究の対応する著者

研究成果: Article査読

80 被引用数 (Scopus)

抄録

The synthesis and decomposition properties of some metal amides M(NH2)x such as LiNH2, NaNH2, Mg(NH2)2 and Ca(NH2)2 were investigated, which play important roles for designing a new family of metal-N-H hydrogen storage systems. Both the gas chromatographic examination and X-ray diffraction measurement indicated that the reaction between alkali or alkaline earth metal hydride MHx (such as LiH, NaH, MgH2 and CaH2) and gaseous NH3 could quickly proceed at room temperature by ball milling and the corresponding metal amides were easily synthesized in high quality. The kinetics of these kind of reactions is faster in the order of NaH > LiH > CaH2 > MgH2, which is consistent with the inverse order of electronegativity of those metals, i.e. Na < Li = Ca < Mg. The thermal decomposition properties indicated that both Mg(NH2)2 and Ca(NH2)2 decomposed and emitted NH3 at lower temperature than LiNH2.

本文言語English
ページ(範囲)166-170
ページ数5
ジャーナルJournal of Power Sources
156
2
DOI
出版ステータスPublished - 2006 6 1
外部発表はい

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 物理化学および理論化学
  • 電子工学および電気工学

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