Temperature dependence of hydrogen adsorption properties of nickel-doped mesoporous silica

Yoshifumi Yamamoto, Nozomi Nawa, Shunsuke Nishimoto, Yoshikazu Kameshima, Motohide Matsuda, Michihiro Miyake

研究成果査読

11 被引用数 (Scopus)

抄録

The temperature dependence of the hydrogen adsorption properties of nickel-doped mesoporous silica (MCM-41) synthesized by a direct hydrothermal method was investigated by measuring the amount of hydrogen adsorbed at pressures up to 100 kPa at 298, 373, and 473 K. Nickel-doped MCM-41 adsorbed more hydrogen than undoped MCM-41 and metallic nickel at ≈298/0, 373/0, and 473 K/0 kPa due to chemical adsorption enhanced by the highly dispersed nickel particles. Chemical adsorption increased with increasing nickel content and adsorption temperature, suggesting the presence of adsorption sites. The nickel doping also brought the spillover effect, which enhances the physical adsorption of hydrogen. The spillover effect was enhanced at high nickel contents and adsorption temperatures.

本文言語English
ページ(範囲)5739-5743
ページ数5
ジャーナルInternational Journal of Hydrogen Energy
36
9
DOI
出版ステータスPublished - 5月 2011

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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