Desorption behaviours from metal-N-H systems synthesized by ball milling

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

*この研究の対応する著者

研究成果: Article査読

75 被引用数 (Scopus)

抄録

Three metal amides LiNH2, NaNH2 and Mg(NH 2)2 were synthesized by ball milling the metal hydrides under gaseous ammonia NH3 at room temperature. The decomposition behaviours from these metal amides were investigated by thermal desorption mass spectroscopy and thermogravimetry analysis methods. The results showed that LiNH2 decomposed at T>230° C and was transformed into the imide Li2NH with emitting NH3, while Mg(NH 2)2, decomposed at T>180° C and was transformed into MgNH and finally into Mg3N2 with emitting NH 3 within 500 ° C. Then, a new metal-N-H system composed of Mg(NH2)2 and LiH with a molar ratio of 3:8 was designed by ball milling treatment and examined the hydrogen storage properties. The results showed that this system could reversibly absorb/desorb a large amount of hydrogen (∼ 7 wt.%) at a moderate temperature and pressure, which was better than the system of LiNH2 and LiH for hydrigen storage.

本文言語English
ページ(範囲)443-447
ページ数5
ジャーナルJournal of Alloys and Compounds
404-406
SPEC. ISS.
DOI
出版ステータスPublished - 2005 12月 8
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

フィンガープリント

「Desorption behaviours from metal-N-H systems synthesized by ball milling」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル