Effects of Mn addition on dehydrogenation of methylcyclohexane over Pt/Al2O3 catalyst

Atsushi Nakano, Shota Manabe, Takuma Higo, Hirofumi Seki, Satoshi Nagatake, Tomohiro Yabe, Shuhei Ogo, Tomomi Nagatsuka, Yukihiro Sugiura, Hideshi Iki, Yasushi Sekine

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Methylcyclohexane (MCH) is a prospective hydrogen carrier candidate. Although Pt/Al2O3 catalyst shows high conversion for dehydrogenation of MCH at 623 K, methane formation and deactivation caused by coke deposition are issues over the catalyst. Results of this study demonstrate that Mn addition to Pt/Al2O3 brought higher selectivity and stability for dehydrogenation of MCH than with Pt/Al2O3 alone. Although Pt and Mn do not form an alloy structure, Pt and Mn form an adjacent structure, and the unsaturated coordination of Pt which promotes methane formation and deactivation decreased. Pt-Mn/Al2O3 shows high catalytic performance by virtue of the coverage of such sites by MnOx.

Original languageEnglish
Pages (from-to)75-81
Number of pages7
JournalApplied Catalysis A: General
Volume543
DOIs
Publication statusPublished - 2017 Aug 5

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Dehydrogenation
Methane
Catalysts
Coke
Hydrogen
methylcyclohexane

Keywords

  • Dehydrogenation of methylcyclohexane
  • Methane formation
  • Mn addition
  • Organic hydride
  • Unsaturated coordination of Pt

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Effects of Mn addition on dehydrogenation of methylcyclohexane over Pt/Al2O3 catalyst. / Nakano, Atsushi; Manabe, Shota; Higo, Takuma; Seki, Hirofumi; Nagatake, Satoshi; Yabe, Tomohiro; Ogo, Shuhei; Nagatsuka, Tomomi; Sugiura, Yukihiro; Iki, Hideshi; Sekine, Yasushi.

In: Applied Catalysis A: General, Vol. 543, 05.08.2017, p. 75-81.

Research output: Contribution to journalArticle

Nakano, Atsushi ; Manabe, Shota ; Higo, Takuma ; Seki, Hirofumi ; Nagatake, Satoshi ; Yabe, Tomohiro ; Ogo, Shuhei ; Nagatsuka, Tomomi ; Sugiura, Yukihiro ; Iki, Hideshi ; Sekine, Yasushi. / Effects of Mn addition on dehydrogenation of methylcyclohexane over Pt/Al2O3 catalyst. In: Applied Catalysis A: General. 2017 ; Vol. 543. pp. 75-81.
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AU - Nakano, Atsushi

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AU - Higo, Takuma

AU - Seki, Hirofumi

AU - Nagatake, Satoshi

AU - Yabe, Tomohiro

AU - Ogo, Shuhei

AU - Nagatsuka, Tomomi

AU - Sugiura, Yukihiro

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AU - Sekine, Yasushi

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AB - Methylcyclohexane (MCH) is a prospective hydrogen carrier candidate. Although Pt/Al2O3 catalyst shows high conversion for dehydrogenation of MCH at 623 K, methane formation and deactivation caused by coke deposition are issues over the catalyst. Results of this study demonstrate that Mn addition to Pt/Al2O3 brought higher selectivity and stability for dehydrogenation of MCH than with Pt/Al2O3 alone. Although Pt and Mn do not form an alloy structure, Pt and Mn form an adjacent structure, and the unsaturated coordination of Pt which promotes methane formation and deactivation decreased. Pt-Mn/Al2O3 shows high catalytic performance by virtue of the coverage of such sites by MnOx.

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