ID 109877
Author
Ehiro, Takuya Department of Chemical Science and Technology, Tokushima University
Itagaki, Ai Department of Chemical Science and Technology, Tokushima University
Misu, Hisanobu Department of Chemical Science and Technology, Tokushima University
Kurashina, Masashi Department of Life System, Institute of Technology and Science, Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Nakagawa, Keizo 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 Search Researchers
Katoh, Masahiro Department of Advanced Materials, Institute of Technology and Science, Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Katou, Yuuki Otake Research Laboratories, Mitsubishi Rayon Co. Ltd.
Ninomiya, Wataru Otake Research Laboratories, Mitsubishi Rayon Co. Ltd.
Sugiyama, Shigeru Department of Advanced Materials, Institute of Technology and Science, Tokushima University|Department of Resource Circulation Engineering, Center for Frontier Research of Engineering, Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
Oxidative Dehydrogenation
Isobutane
Isobutene
MCM-41
Metal-Doping
Content Type
Journal Article
Description
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 Title
Journal of Chemical Engineering of Japan
ISSN
00219592
NCID
AA00709658
Volume
49
Issue
2
Start Page
136
End Page
143
Sort Key
136
Published Date
2016
Remark
Copyright © 2016 The Society of Chemical Engineers, Japan
EDB ID
Published Source
Journal of Chemical Engineering of Japan (2016) Vol.49 No.2 p.136-143 (doi: 10.1252/jcej.15we106)
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Author
departments
Science and Technology