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Effects of Na Addition, Pyridine Preadsorption, and Water Preadsorption on the Hydrogen Adsorption Property of Pt/SO4 2--ZrO2

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Abstract

Hydrogen adsorption was studied for Pt/SO4 2--ZrO2 samples modified with Na addition, pyridine preadsorption, and water preadsorption to elucidate the relation between the rate and capacity of hydrogen adsorption and the surface state. The surface states were monitored by XRD, IR, ammonia TPD, and measurement of catalytic activity for cyclohexane isomerization. All the modifications suppressed the hydrogen uptake. It was suggested that Lewis acid sites promote the hydrogen uptake by stabilizing spiltover hydrogen atoms.

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Authors and Affiliations

  1. Center for Advanced Research of Energy Technology, Hokkaido University, Sapporo, 060-6828, Japan

    Sugeng Triwahyono, Takashi Yamada & Hideshi Hattori

Authors
  1. Sugeng Triwahyono
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  2. Takashi Yamada
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  3. Hideshi Hattori
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Correspondence to Hideshi Hattori.

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Triwahyono, S., Yamada, T. & Hattori, H. Effects of Na Addition, Pyridine Preadsorption, and Water Preadsorption on the Hydrogen Adsorption Property of Pt/SO4 2--ZrO2 . Catalysis Letters 85, 109–115 (2003). https://doi.org/10.1023/A:1022185211477

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  • DOI: https://doi.org/10.1023/A:1022185211477

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