Microscopic Study on Hydrogenation Mechanism of MgH<sub>2</sub> Catalyzed by Nb<sub>2</sub>O<sub>5</sub>
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- Isobe Shigehito
- Graduate School of Engineering, Hokkaido University Creative Research Institution, Hokkaido University
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- Umeda Ayaka
- Graduate School of Engineering, Hokkaido University
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- Wakasugi Takenobu
- Graduate School of Engineering, Hokkaido University
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- Ma Tao
- Graduate School of Engineering, Hokkaido University
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- Yamagami Ryo
- Graduate School of Engineering, Hokkaido University
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- Hino Satoshi
- Graduate School of Engineering, Hokkaido University
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- Wang Yongming
- Graduate School of Engineering, Hokkaido University Creative Research Institution, Hokkaido University
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- Hashimoto Naoyuki
- Graduate School of Engineering, Hokkaido University
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- Ohnuki Somei
- Graduate School of Engineering, Hokkaido University
Bibliographic Information
- Other Title
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- Microscopic Study on Hydrogenation Mechanism of MgH₂ Catalyzed by Nb₂O₅
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Abstract
We propose the microstructural change model of magnesium hydride catalyzed by Nb2O5 during hydrogenation. The ball-milled composites, MgH2 and 1 mol% Nb2O5, were dehydrogenated and then rehydrogenated for varied time at room temperature under 0.1 MPa H2 atmosphere. The crystallite size of Mg and MgH2 was evaluated by powder X-ray diffraction (XRD) measurement and confirmed by transmission electron microscopy (TEM) observation. The crystallite size of generated MgH2 was smaller than that of Mg and did not change significantly with increasing time of hydrogenation. It is suggested that the number density of MgH2 crystallites increases during the hydrogenation process.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 55 (8), 1175-1178, 2014
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390001204253737216
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- NII Article ID
- 130004455358
- 40020140472
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- NII Book ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 025616970
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed