エヒロ, タクヤ Department of Chemical Science and Technology, Tokushima University
イタガキ, アイ Department of Chemical Science and Technology, Tokushima University
ミス, ヒサノブ Department of Chemical Science and Technology, Tokushima University
倉科, 昌 Department of Life System, Institute of Technology and Science, Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
中川, 敬三 Department of Advanced Materials, Institute of Technology and Science, Tokushima University|Department of Resource Circulation Engineering, Center for Frontier Research of Engineering, Tokushima University KAKEN研究者をさがす
加藤, 雅裕 Department of Advanced Materials, Institute of Technology and Science, Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
カトウ, ユウキ Otake Research Laboratories, Mitsubishi Rayon Co. Ltd.
ニノミヤ, ワタル Otake Research Laboratories, Mitsubishi Rayon Co. Ltd.
MCM-41 (#41 Mobil Composition of Matter) is a favorable material for heterogeneous reactions because of its unique porous structure. However, the catalytic activity of MCM-41 for the oxidative dehydrogenation (ODH) of isobutane to isobutene is known to be quite low. In the present study, a metal-doping method was employed to improve this catalytic activity. Doping of Cr, Co, Ni, or Mo into MCM-41 resulted in a great improvement in the catalytic activity. Since chromium-doped MCM-41 (Cr-MCM-41) showed the greatest catalytic activity among these catalysts, its redox property was further analyzed via XPS, XAFS and H2-TPR techniques. The XPS spectrum of Cr-MCM-41 suggested that it has Cr3+ and Cr6+ species on its surface. Also, a pre-edge peak due to Cr6+ species was confirmed in the XANES spectrum of Cr-MCM-41. In H2-TPR measurement, Cr-MCM-41 was more reducible than crystalline Cr2O3, which showed low catalytic activity for the ODH of isobutane. The reducible Cr6+ species on Cr-MCM-41 contributed to an improvement in the catalytic activity of MCM-41.
Journal of Chemical Engineering of Japan
Copyright © 2016 The Society of Chemical Engineers, Japan
Journal of Chemical Engineering of Japan (2016) Vol.49 No.2 p.136-143 (doi: 10.1252/jcej.15we106)
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