Selected Paper : Formation of Ru Shell on Co/Al₂O₃ by Galvanic Deposition Method and Its High Catalytic Performance for Three-Way Conversion
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説明
<jats:title>Abstract</jats:title> <jats:p>A supported Ru catalyst was prepared by a galvanic deposition (GD) of Ru on Co particles supported on Al2O3 (Ru/Co-GD). The structure and chemical state of Ru/Co-GD was characterized by using a pulsed CO chemisorption technique, STEM-EDS, XAFS, XPS, CO adsorption FT-IR spectroscopy, and temperature-programed reduction (TPR) method. It is indicated that Ru/Co-GD forms Ru shell on Co nanoparticles. Such a unique structure was not formed on Ru/Co/Al2O3 prepared by a conventional sequential impregnation method (Ru/Co-seq). The Ru shell of Ru/Co-GD showed higher reducibility than Ru species of Ru/Co-seq as well as higher than Ru/Al2O3. Owing to the Ru shell having high reducibility, Ru/Co-GD showed enhanced catalytic activity for NO–C3H6 reaction. In addition, Co oxide on Ru/Co-GD exhibited high catalytic activity for CO and C3H6 oxidation. As a result, Ru/Co-GD showed superior performance for NO–C3H6–CO–O2 reaction compared to the conventional catalysts. The Ru shell structure also contributed to the suppression of Ru vaporization.</jats:p>
収録刊行物
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 89 (8), 914-921, 2016-08
Tokyo : Chemical Society of Japan
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詳細情報 詳細情報について
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- CRID
- 1523106605450625536
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- NII論文ID
- 130006770686
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- NII書誌ID
- AA00580132
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- ISSN
- 00092673
- 13480634
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- NDL書誌ID
- 027533944
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- en
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- NDL 雑誌分類
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- ZP1(科学技術--化学・化学工業)
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