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

doi:10.1016/j.ijhydene.2022.09.055

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

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	38635-38643
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	91
DOIs	https://doi.org/10.1016/j.ijhydene.2022.09.055
Publication status	Published - Nov 15 2022

All Science Journal Classification (ASJC) codes

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2022.09.055

Cite this

@article{ab343f0d06cb4d54a2185a3d5cc9d724,

title = "Improved catalytic stability of Pt/TiO2 catalysts for methylcyclohexane dehydrogenation via selenium addition",

abstract = "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.",

author = "Hiroya Ito and Kazumasa Oshima and Tsuyoshi Yamamoto and Ting, {Kah Wei} and Takashi Toyao and Takeharu Sugiyama and Yuzuru Kato and Kentaro Morita and Asuka Ohashi and Masahiro Kishida",

note = "Publisher Copyright: {\textcopyright} 2022 Hydrogen Energy Publications LLC",

year = "2022",

month = nov,

day = "15",

doi = "10.1016/j.ijhydene.2022.09.055",

language = "English",

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journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Improved catalytic stability of Pt/TiO2 catalysts for methylcyclohexane dehydrogenation via selenium addition

AU - Ito, Hiroya

AU - Oshima, Kazumasa

AU - Yamamoto, Tsuyoshi

AU - Ting, Kah Wei

AU - Toyao, Takashi

AU - Sugiyama, Takeharu

AU - Kato, Yuzuru

AU - Morita, Kentaro

AU - Ohashi, Asuka

AU - Kishida, Masahiro

PY - 2022/11/15

Y1 - 2022/11/15

N2 - 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.

AB - 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.

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EP - 38643

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

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