Dehydrogenation of Methylcyclohexane over Pt/TiO2 Catalyst

Satoshi Nagatake, Takuma Higo, Shuhei Ogo, Yukihiro Sugiura, Ryo Watanabe, Choji Fukuhara, Yasushi Sekine

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Methylcyclohexane (MCH) is expected as a hydrogen carrier. Dehydrogenation of MCH was conducted over supported Pt catalysts at 623 K. Pt/TiO2 showed high stability for dehydrogenation and good resistance for coke formation. The partial pressure dependence of MCH, toluene, and H2 was investigated for Pt/TiO2 and Pt/Al2O3 catalysts, which showed different tendencies for toluene partial pressure. The reaction order of toluene partial pressure for Pt/TiO2 was almost zero, but that for Pt/Al2O3 was a negative value. Toluene inhibited the Pt/Al2O3 catalytic activity, but that of Pt/TiO2 was unaffected. The SMSI effect was confirmed on Pt/TiO2 by CO chemisorption measurement. Pt on TiO2 became an electron-rich state compared to Pt0 because of the electron donation from TiOx, and the toluene adsorption to Pt on TiO2 was weakened.

Original languageEnglish
Pages (from-to)54-60
Number of pages7
JournalCatalysis Letters
Volume146
Issue number1
DOIs
Publication statusPublished - 2016 Jan 1

Fingerprint

Toluene
Dehydrogenation
Catalysts
Partial pressure
Electrons
Carbon Monoxide
Chemisorption
Catalyst supports
Coke
Hydrogen
Catalyst activity
methylcyclohexane
Adsorption

Keywords

  • Dehydrogenation
  • Electronic state
  • Methylcyclohexane
  • Organic hydride
  • Pt/TiO

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Dehydrogenation of Methylcyclohexane over Pt/TiO2 Catalyst. / Nagatake, Satoshi; Higo, Takuma; Ogo, Shuhei; Sugiura, Yukihiro; Watanabe, Ryo; Fukuhara, Choji; Sekine, Yasushi.

In: Catalysis Letters, Vol. 146, No. 1, 01.01.2016, p. 54-60.

Research output: Contribution to journalArticle

Nagatake, Satoshi ; Higo, Takuma ; Ogo, Shuhei ; Sugiura, Yukihiro ; Watanabe, Ryo ; Fukuhara, Choji ; Sekine, Yasushi. / Dehydrogenation of Methylcyclohexane over Pt/TiO2 Catalyst. In: Catalysis Letters. 2016 ; Vol. 146, No. 1. pp. 54-60.
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AB - Methylcyclohexane (MCH) is expected as a hydrogen carrier. Dehydrogenation of MCH was conducted over supported Pt catalysts at 623 K. Pt/TiO2 showed high stability for dehydrogenation and good resistance for coke formation. The partial pressure dependence of MCH, toluene, and H2 was investigated for Pt/TiO2 and Pt/Al2O3 catalysts, which showed different tendencies for toluene partial pressure. The reaction order of toluene partial pressure for Pt/TiO2 was almost zero, but that for Pt/Al2O3 was a negative value. Toluene inhibited the Pt/Al2O3 catalytic activity, but that of Pt/TiO2 was unaffected. The SMSI effect was confirmed on Pt/TiO2 by CO chemisorption measurement. Pt on TiO2 became an electron-rich state compared to Pt0 because of the electron donation from TiOx, and the toluene adsorption to Pt on TiO2 was weakened.

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