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学科主题: 物理化学
题名: Au-Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols
作者: Li WJ(李婉君) ;  Wang AQ(王爱琴) ;  Zhang T(张涛)
会议名称: GOLD 2009(The 5th international conference on gold science, technology and its applications)
会议日期: 2009-7-25
出版日期: 2009-07-25
会议地点: 德国
其他题名: Au-Cu合金纳米粒子高效催化醇的选择氧化反应研究
通讯作者: Tao Zhang
部门归属: 十五室
主办者: 世界金协会,海德堡大学
摘要: Recently, catalysis by gold nanoparticles has become one of the most studied topics in chemistry. The research on gold catalysis focuses on fundamental aspects of gold particles (e.g., size or shape effect, cluster-support interaction, etc.) on one hand, and exploring new reactions on the other hand. Among various reactions catalyzed by gold, selective oxidation of alcohols has attracted much attention because it affords a green process (atmospheric pressure, oxygen as the oxidant) for manufacture of aldehydes or ketones from alcohols. In the present work, small and uniform Au-Cu alloy nanoparticles were prepared on commercial silica support[2] and used as catalysts for the aerobic oxidation of a broad range of structurally different alcohols. As shown in Table 1, variation in the molar ratio of gold to copper led to different selectivities to benzaldehyde when benzyl alcohol was used as the substrate (entries 1-5). Especially, when Au/Cu = 1/1, both the conversion of benzyl alcohol and the selectivity to benzaldehyde are close to 100%, showing the synergetic effect between gold and copper. For the selective oxidation of other alcohols, the Au1Cu1/SiO2 also gave rise to a greatly enhanced selectivity compared to silica-supported pure gold catalyst. A variety of characterization techniques including XRD, HRTEM, UV-Vis, and FT-IR were employed to confirm the formation of Au-Cu alloy phase and to reveal the reaction mechanism of alcohol oxidation.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113524
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Li WJ,Wang AQ,Zhang T. Au-Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols[C]. 见:GOLD 2009(The 5th international conference on gold science, technology and its applications). 德国. 2009-7-25.
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