ID 109878
著者
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
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.
杉山, 茂 Department of Advanced Materials, Institute of Technology and Science, Tokushima University|Department of Resource Circulation Engineering, Center for Frontier Research of Engineering, Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
キーワード
Oxidative Dehydrogenation
Isobutane
MCM-41
Acid Treatment
Template Ion Exchange
資料タイプ
学術雑誌論文
抄録
Mesoporous silicas have shown promise as materials for solid catalysts or catalyst supports due to their unique characteristics. Metal-doped mesoporous silicas are known to be catalytically active in the oxidative dehydrogenation (ODH) of isobutane. However, heavy-metal-free mesoporous silicas have not been studied closely for their use as catalysts. In the present study, MCM-41 (#41 Mobil composition of matter) was acid-treated to enhance its catalytic activity, although pure MCM-41 was confirmed as catalytically inactive for the ODH of isobutane (isobutene yield = 0.9%). The pH of a slurry of as-synthesized MCM-41 was changed during acid treatment. A pH adjustment to 6.5 resulted in great improvement in catalytic activity (isobutene yield = 6.1%), but a pH adjustment to 4.5 resulted in insufficient improvement (isobutene yield = 4.5%). It was confirmed via XRD and N2 adsorption-desorption measurement that the pH adjustment to 4.5 degraded the ordered structure of MCM-41. This degradation would be a crucial factor that would render acid treatment less effective. In addition to the acid treatment, Al doping to MCM-41 was conducted. Al doping also greatly enhanced the acidity and catalytic activity of MCM-41.
掲載誌名
Journal of Chemical Engineering of Japan
ISSN
00219592
cat書誌ID
AA00709658
49
2
開始ページ
152
終了ページ
160
並び順
152
発行日
2016
備考
Copyright © 2016 The Society of Chemical Engineers, Japan
EDB ID
303593
出典
Journal of Chemical Engineering of Japan (2016) Vol.49 No.2 p.152-160 (doi: 10.1252/jcej.15we155)
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
理工学系