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ID 114386
著者
霜田, 直宏 Seikei University|Tokushima University 徳島大学 教育研究者総覧
Yoshimura, Ryo Seikei University
Nukui, Takahiro Seikei University
Satokawa, Shigeo Seikei University
キーワード
Ammonia Decomposition
Nickel
Cobalt
Alumina Support
Alloying Effect
資料タイプ
学術雑誌論文
抄録
The development of a base metal catalyst which shows high performance for the ammonia (NH3) decomposition have been conducted. For the Ni and Co based catalysts using α-Al2O3 as a support, the performance of the single metal catalysts was lower than that of the γ-Al2O3 supported catalysts. However, its performance was greatly improved by using a binary metal catalyst system. Based on the XRD analysis, it was found that Ni and Co supported on α-Al2O3 were alloyed. TEM observation confirmed that the metal particle size in the α-Al2O3 supported Ni-Co catalyst is smaller than that of the single metal catalysts (Ni/α-Al2O3 or Co/α-Al2O3). Furthermore, in-situ XRD and H2-TPR measurements revealed that the Ni-Co alloy forms during the reduction process. The optimum mixing ratio of Ni and Co components was 1:1, and the optimum pre-reduction temperature before the performance test was 600 °C. Studies on the differences of support oxides proved that the improvement effect by alloying can be similarly obtained with the SiO2 supported catalyst, indicating that the catalyst using the support with less interaction between the active metal and the support is more likely to obtain the performance improvement effect by alloying.
掲載誌名
Journal of Chemical Engineering of Japan
ISSN
00219592
cat書誌ID
AA00709658
出版者
The Society of Chemical Engineers, Japan
52
5
開始ページ
413
終了ページ
422
発行日
2019-05-20
備考
著者英表記誤記あり (誤)Takahiro Nikui→(正)Takahiro Nukui
EDB ID
出版社版DOI
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