Hydrogenation reaction of Co3Ti alloy under high pressure and high temperature

Hiroyuki Saitoh, Masahiro Morimoto, Tetsu Watanuki, Toyoto Sato, Shigeyuki Takagi, Shin ichi Orimo

研究成果: Article査読

1 被引用数 (Scopus)

抄録

To synthesize a novel titanium-containing hydride, a Co3Ti alloy with a Cu3Au-type structure was hydrogenated at 9 GPa and 900 °C. Structural changes under high pressure were monitored via in situ synchrotron radiation x-ray diffraction at BL14B1, SPring-8. The in-situ measurement reveals that novel hydride Co3TiH~4 is formed at 9 GPa and 900 °C. When the sample was depressurized at room temperature, the formed hydride decomposed to (the previously reported) Co3TiH~1 at a pressure of ~1 GPa. Co3TiH~1 was recovered at ambient conditions and decomposed gradually into the Co3Ti alloy. Co3TiH~4 is thermodynamically stable only at pressures above 1 GPa.

本文言語English
ページ(範囲)33675-33680
ページ数6
ジャーナルInternational Journal of Hydrogen Energy
45
58
DOI
出版ステータスPublished - 2020 11 27
外部発表はい

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • 凝縮系物理学
  • エネルギー工学および電力技術

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