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

被引：64
|
作者：
Nakano, Atsushi [1 ]
Manabe, Shota [1 ]
Higo, Takuma [1 ]
Seki, Hirofumi [1 ]
Nagatake, Satoshi [1 ]
Yabe, Tomohiro [1 ]
Ogo, Shuhei [1 ]
Nagatsuka, Tomomi [2 ]
Sugiura, Yukihiro [2 ]
Iki, Hideshi [2 ]
Sekine, Yasushi [1 ]
机构：
[1] Waseda Univ, Dept Appl Chem, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan
[2] JX Nippon Oil & Energy Corp, Cent Tech Res Lab, Naka Ku, 8 Chidori Cho, Yokohama, Kanagawa 2310815, Japan
来源：
APPLIED CATALYSIS A-GENERAL | 2017年 / 543卷
关键词：
Organic hydride; Dehydrogenation of methylcyclohexane; Mn addition; Methane formation; Unsaturated coordination of Pt; HYDROGEN STORAGE; ROOM-TEMPERATURE; COKING BEHAVIOR; PTRE CATALYSTS; YIELD PATTERNS; KINETICS; PT-RE/AL2O3; AROMATICS; HYDRIDES; CRYSTAL;
D O I：
10.1016/j.apcata.2017.06.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：75 / 81
页数：7
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