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

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5739-5743
Number of pages5
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number9
DOIs
Publication statusPublished - May 2011

Fingerprint

Silica
Nickel
nickel
silicon dioxide
Adsorption
Hydrogen
temperature dependence
adsorption
hydrogen
Multicarrier modulation
Temperature
Doping (additives)
temperature

Keywords

  • Hydrogen adsorption
  • MCM-41
  • Nickel
  • Spillover effect
  • Temperature dependence

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Temperature dependence of hydrogen adsorption properties of nickel-doped mesoporous silica. / Yamamoto, Yoshifumi; Nawa, Nozomi; Nishimoto, Shunsuke; Kameshima, Yoshikazu; Matsuda, Motohide; Miyake, Michihiro.

In: International Journal of Hydrogen Energy, Vol. 36, No. 9, 05.2011, p. 5739-5743.

Research output: Contribution to journalArticle

Yamamoto, Yoshifumi ; Nawa, Nozomi ; Nishimoto, Shunsuke ; Kameshima, Yoshikazu ; Matsuda, Motohide ; Miyake, Michihiro. / Temperature dependence of hydrogen adsorption properties of nickel-doped mesoporous silica. In: International Journal of Hydrogen Energy. 2011 ; Vol. 36, No. 9. pp. 5739-5743.
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