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

doi:10.1016/j.apcata.2017.06.017

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^*

^*Corresponding author for this work

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

36 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 MnO_x.

Original language	English
Pages (from-to)	75-81
Number of pages	7
Journal	Applied Catalysis A: General
Volume	543
DOIs	https://doi.org/10.1016/j.apcata.2017.06.017
Publication status	Published - 2017

Keywords

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

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2017.06.017

Cite this

@article{bc42c2d8748040a9ab230ed802c7bcdb,

title = "Effects of Mn addition on dehydrogenation of methylcyclohexane over Pt/Al2O3 catalyst",

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.",

keywords = "Dehydrogenation of methylcyclohexane, Methane formation, Mn addition, Organic hydride, Unsaturated coordination of Pt",

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

note = "Funding Information: A part of this work was supported by Cross-ministerial Strategic Innovation Promotion Program (SIP) – Energy Carriers project, the Cabinet Office of Japan and JST. Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

doi = "10.1016/j.apcata.2017.06.017",

language = "English",

volume = "543",

pages = "75--81",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier",

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T1 - Effects of Mn addition on dehydrogenation of methylcyclohexane over Pt/Al2O3 catalyst

AU - Nakano, Atsushi

AU - Manabe, Shota

AU - Higo, Takuma

AU - Seki, Hirofumi

AU - Nagatake, Satoshi

AU - Yabe, Tomohiro

AU - Ogo, Shuhei

AU - Nagatsuka, Tomomi

AU - Sugiura, Yukihiro

AU - Iki, Hideshi

AU - Sekine, Yasushi

N1 - Funding Information: A part of this work was supported by Cross-ministerial Strategic Innovation Promotion Program (SIP) – Energy Carriers project, the Cabinet Office of Japan and JST. Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017

Y1 - 2017

N2 - 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.

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.

KW - Dehydrogenation of methylcyclohexane

KW - Methane formation

KW - Mn addition

KW - Organic hydride

KW - Unsaturated coordination of Pt

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DO - 10.1016/j.apcata.2017.06.017

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