Improved catalytic stability of Pt/TiO2 catalysts for methylcyclohexane dehydrogenation via selenium addition

Hiroya Ito, Kazumasa Oshima, Tsuyoshi Yamamoto, Kah Wei Ting, Takashi Toyao, Takeharu Sugiyama, Yuzuru Kato, Kentaro Morita, Asuka Ohashi, Masahiro Kishida

研究成果: ジャーナルへの寄稿学術誌査読

10 被引用数 (Scopus)

抄録

To improve the catalytic activity of Pt catalysts for methylcyclohexane (MCH) dehydrogenation, which is utilized for hydrogen transportation, the effects of the addition of Se on the performance of Pt/TiO2 catalysts were investigated. In Se/Pt/TiO2 catalysts, even a small amount of Se addition (Se/Pt = 0.01) improved the catalyst stability. Se was highly dispersed on the Pt/TiO2 surface, without volatilizing in a reducing atmosphere at temperatures below 450 °C, and did not form an alloy with Pt. The analysis of adsorption-desorption characteristics revealed that the addition of Se promoted the desorption of products, including the main product, toluene. Moreover, an electron donation effect from Se to Pt was observed by FT-IR measurement after the reduction. The desorption characteristic caused by the electron donation effect suppressed the deterioration of the catalyst and allowed stable catalytic activity toward the MCH dehydrogenation reaction.

本文言語英語
ページ(範囲)38635-38643
ページ数9
ジャーナルInternational Journal of Hydrogen Energy
47
91
DOI
出版ステータス出版済み - 11月 15 2022

!!!All Science Journal Classification (ASJC) codes

  • 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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