Electronic Modification Effects Induced by Fe in Pt-Ru-Fe Ternary Catalyst on the Electrooxidation of CO/H₂ and Methanol
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- Kim Taeyoon
- Department of Chemistry and Energy Engineering, Tokyo City University
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- Kobayashi Koichi
- Department of Chemistry and Energy Engineering, Tokyo City University Research Center for Energy and Environmental Science, Advance Research Laboratory, Tokyo City University
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- Take Tetsuo
- Department of Chemistry and Energy Engineering, Tokyo City University Research Center for Energy and Environmental Science, Advance Research Laboratory, Tokyo City University
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- Nagai Masayuki
- Department of Chemistry and Energy Engineering, Tokyo City University Research Center for Energy and Environmental Science, Advance Research Laboratory, Tokyo City University
書誌事項
- タイトル別名
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- Electronic Modification Effects Induced by Fe in Pt-Ru-Fe Ternary Catalyst on the Electrooxidation of CO/H<sub>2</sub> and Methanol
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Electro-oxidation of CO/H2 and methanol was performed over a carbon supported Pt-Ru-Fe ternary alloy catalyst prepared via the conventional NaBH4 reduction method. Physicochemical and electrochemical measurements were used to elucidate the respective roles of Ru and Fe in the ternary catalyst, revealing synergistic effects in the Pt-Ru-Fe catalyst on the electro-oxidation of CO/H2 and methanol. The methanol oxidation activity of Pt3Ru2Fe/C was ca. 2.5 times higher than that of PtRu/C at 0.45 V vs. RHE as a result of enhanced CO tolerance. The enhanced CO tolerance of the Pt-Ru-Fe ternary alloy catalysts was derived from the reaction between the high mobility, weakly adsorbed CO on the Pt site that was electronically modified by alloying with Fe and adsorbed water species on the Ru site. This combination of features produced an improvement in the electro-oxidation of CO/H2 and methanol at lower potential. On the basis of the data, it was proposed that the addition of a water activator such as Ru is indispensible in the design of multicomponent alloy catalysts for methanol oxidation, and the additional effect derived from an electronic modifier is an important factor for improving the CO and methanol oxidation activity of the catalyst containing the water activator.
収録刊行物
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- Journal of Oleo Science
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Journal of Oleo Science 61 (3), 127-134, 2012
公益社団法人 日本油化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679069944960
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- NII論文ID
- 130001882216
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- NII書誌ID
- AA11503337
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- COI
- 1:STN:280:DC%2BC383lvFyqtw%3D%3D
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- ISSN
- 13473352
- 13458957
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- NDL書誌ID
- 023424957
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- PubMed
- 22362143
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可