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| 基本情報 |
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| 氏名 |
中村 修 |
| 氏名（カナ） |
ﾅｶﾑﾗ ｵｻﾑ |
| 氏名（英語） |
Nakamura Osamu |
| 所属 |
機構 研究社会連携機構 研究社会連携ｾﾝﾀｰ |
| 職名 |
教授 |
| researchmap研究者コード |
B000300963 |
| researchmap機関 |
岡山理科大学 |
Nanoparticulate Pt-Catalyzed Hydrogenation of Yb Films: Towards Hydrides with Higher Hydrogen Compositions
Toshihiro Yoshizumi, Keigo Koshiba, Satoru Kitsunai, Teru Yoshizawa, Osamu Nakamura, Masamichi Sakai (corr-auth)
It is more difficult to synthesize β-phase ytterbium trihydride (β-YbH3−δ) under moderate conditions than other rare-earth metal trihydrides because it requires a valence change from a fully occupied
shell (
) in Yb2+ to an unclosed shell (
) in Yb3+. We synthesized β-YbH3−δ at ambient pressure through hydrogenation of a Yb film capped with platinum (Pt) nanoparticle (NP) catalysts. In addition, Pt NP capping enabled us to synthesize α-phase Yb dihydride (α-YbH2±δ) at room temperature. The difficulty of trihydrogenating Yb to β-YbH3−δ is explained by kinetic analyses based on temperature and time dependences of molar fractions of α-YbH2±δ and β-YbH3−δ. Pt NP capping can be used to synthesize other hydrogen-rich rare-earth metal hydrides under ambient pressure and lower temperatures.
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