ID 109879
著者
オオタケ, ナオタカ Department of Chemical Science and Technology, Tokushima University|Anan Kasei Co. Ltd.
ヤマネ, ヨシキ 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
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
Cerium Oxide
Hydrothermal Synthesis
Specific Surface Area
Catalytic Dehydration
Ethanol
資料タイプ
学術雑誌論文
抄録
Morphological control can be used to improve the catalytic activity of cerium oxide (ceria, CeO2). In this study, ceria with a high specific surface area was synthesized via the hydrothermal reaction of ceric nitrate and was tested for the catalytic conversion of ethanol to ethylene. As a reference, ceria was also synthesized via a precipitation reaction of cerous nitrate using aqueous ammonia. The Japan reference catalyst JRC-CEO-1 also served as a reference. The specific surface area of the hydrothermally synthesized ceria was as high as that of JRC-CEO-1, but was much higher than that of either reference after calcination at 873 K. Thermogravimetric analysis and IR spectroscopy revealed that the cerias made by hydrothermal and precipitation reactions consisted of high-purity CeO2, whereas JRC-CEO-1 contained 1.5% decomposable functional groups (OH-, CO3 2-). For both ethanol conversion and ethylene selectivity in a catalytic dehydration reaction of ethanol, the activity of the hydrothermally developed ceria was higher than that for either reference. The reaction pathway for the dehydration reaction of ethanol over ceria showed that the specific surface area and the basicity of the Lewis basic sites of the ceria were influential properties. The high catalytic activity of the hydrothermally synthesized ceria was derived from its high specific surface area and high-purity CeO2.
掲載誌名
Journal of Chemical Engineering of Japan
ISSN
00219592
cat書誌ID
AA00709658
49
2
開始ページ
197
終了ページ
203
並び順
197
発行日
2016
備考
Copyright © 2016 The Society of Chemical Engineers, Japan
EDB ID
出典
Journal of Chemical Engineering of Japan (2016) Vol.49 No.2 p.197-203 (doi: 10.1252/jcej.15we125)
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