2013年5月
Microstructure and hydrogen desorption characteristics of hydrogenated ScH2-MBn (M = Mg and Ca) systems synthesized by mechanical milling
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- 巻
- 38
- 号
- 16
- 開始ページ
- 6744
- 終了ページ
- 6749
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.ijhydene.2013.03.102
- 出版者・発行元
- PERGAMON-ELSEVIER SCIENCE LTD
The mixtures of scandium hydride ScH2 and metal boride MBn, which is MgB2 or CaB6, were hydrogenated by mechanical milling under hydrogen pressure at room temperature. ScH2-MgB2 and ScH2-CaB6 desorbed 3.4 and 2.3 mass% of H-2, respectively, with peaks below 300 degrees C. The results of synchrotron radiation X-ray powder diffraction and X-ray absorption spectroscopy at the Sc K-edge indicated that ScB2 was produced by milling. Fourier-transform infrared spectroscopy suggested that hydrogen was stored as B-H bonds in the as-milled samples. Nuclear magnetic resonance spectroscopy clarified the presence of metal borohydrides M(BH4)(2) (M = Mg and Ca) in the as-milled ScH2-MBn mixtures. These results indicate that M(BH4)(2) is synthesized by milling the ScH2-MBn mixtures under hydrogen pressure at room temperature, and hydrogen was desorbed from M(BH4)(2). The by-products of M(BH4)(2) are MgH2 in the M = Mg case, which was observed by transmission electron microscopy, and ScB2 in both cases. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
- リンク情報
-
- DOI
- https://doi.org/10.1016/j.ijhydene.2013.03.102
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000319958400021&DestApp=WOS_CPL
- URL
- https://www.sciencedirect.com/science/article/pii/S0360319913007428
- ID情報
-
- DOI : 10.1016/j.ijhydene.2013.03.102
- ISSN : 0360-3199
- eISSN : 1879-3487
- Web of Science ID : WOS:000319958400021