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ID 25963
本文ファイル
著者
Kawai, Yasuaki
Matsumoto, Mitsuru
Haga, Tetsuya
キーワード
Hydrogen absorbing materials
Metal hydrides
Mechanochemical processing
Catalysis
X-ray diffraction
NDC
化学
抄録(英)
The effects of various catalysts on the H2 release characteristics of LiAlH4 were studied. It was established that the catalytic activity defined by the H2 desorption capacity by a mechanochemical reaction decreased in the series TiCl3>ZrCl4>VCl3>NiCl2>ZnCl2. Transition metal trialuminides Al3X (X=Ti, Zr, V, Ni) were prepared by the mechanochemical reaction of LiAlH4 and the metal chlorides, while the reaction of LiAlH4 and ZnCl2 yields Zn. The high catalytic activity was attributed to the lower percentage d-character and the electronegativity of those transition metals. The catalytic activity of Ni was also improved with decreasing the Ni particle size. Those catalysts were classified to two groups (1. TiCl3, ZrCl4, 2. VCl3, NiCl2, Ni, nano-Ni) from the viewpoint of the H2 desorption mechanism.
掲載誌名
Journal of Alloys and Compounds
462巻
1-2号
開始ページ
275
終了ページ
278
出版年月日
2008-08-25
出版者
Elsevier Science S.A.
ISSN
0925-8388
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2007 Published by Elsevier B.V.
関連情報URL
部局名
先進機能物質研究センター