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このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/10119/13506

タイトル: Bimetallic PdCu Nanoparticle Catalyst Supported on Hydrotalcite for Selective Aerobic Oxidation of Benzyl Alcohol
著者: Nishimura, Shun
Yoshida, Nao
Ebitani, Kohki
キーワード: Bimetallic PdCu catalyst
Selective aerobic oxidation
Benzyl alcohol
発行日: 2015
出版者: Materials Research Society
誌名: MRS Proceedings
巻: 1760
DOI: 10.1557/opl.2015.58
抄録: To decrease the amount of precious metal usage for Pd-catalyzed aerobic alcohol oxidation, various amount of Cu-contained Pd bimetallic nanoparticle-supported solid base hydrotalcite catalyst (Pd_xCu_y-PVP/HTs) were prepared and applied for aerobic benzyl alcohol oxidation. It was found that the addition of Cu atoms into Pd in the range of 0-40% provided a similar or a little superior activity to that of Pd_<100>-PVP catalyst, whereas a large quantity of co-existence Cu (>40%) gradually decreased their activity of the catalyst. The aerobic benzyl alcohol oxidation over Pd_<80>Cu_<20>-PVP/HT served 77% yield and 95% selectivity towards benzaldehyde at 313 K for 5 h in toluene under O_2 flow. X-ray adsorption spectroscopy (XAS) studies and scanning transmission electron microscopy-high angle annuar dark field (STEM-HAADF) with energy dispersive X-ray spectroscopy (EDS) analyses suggested that Cu atoms doping into Pd(0) NP influenced not only localized nanostructure but also oxidation state around Pd atoms. We suggested that substitution of precious metal with small amount of transition metals such as Cu lead to geometric/electronic changes in active sites would be one of nice strategies for reducing the cost for the catalyst in the oxidation process.
Rights: Copyright (C) 2015 Materials Research Society. Shun Nishimura, Nao Yoshida, Kohki Ebitani, MRS Proceedings, 1760, 2015, DOI:10.1557/opl.2015.58. http://dx.doi.org/10.1557/opl.2015.58
URI: http://hdl.handle.net/10119/13506
資料タイプ: publisher
出現コレクション:c11-1. 会議発表論文 (Conference Papers)


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