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题名: Atomic level tuning of the catalytic properties: Doping effects of 25-atom bimetallic nanoclusters on styrene oxidation
作者: Li, Gao1, 2;  Jin, Rongchao1
关键词: Gold nanoclusters ;  Doping ;  Silver ;  Copper ;  Catalytic oxidation
刊名: CATALYSIS TODAY
发表日期: 2016-12-01
DOI: 10.1016/j.cattod.2015.11.019
卷: 278, 页:187-191
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
英文摘要: Atomically precise bimetallic MxAu25-x(SR)(18) (M=Cu and Ag, R= CH2CH2Ph) nanoclusters are investigated as oxide-supported catalysts for the catalytic oxidation of styrene. Their catalytic properties are compared with the case of homogold Au-25(SR)(18) nanocluster. The oxide-supported MxAu25-x(SR)(18) catalysts give rise to 42-82% conversion of styrene at 70 degrees C using (diacetoxyiodo)benzene (PhI(OAc)2) as the oxidant. The Ag and Cu dopants are found to modulate both the activity (i.e., conversion of styrene) and the selectivity to styrene epoxide or benzaldehyde (major products). The AgxAu25-x(SR)(18) clusters exhibit higher activity and benzaldehyde selectivity than the homogold cluster, while the CuxAu25-x(SR)(18) clusters primarily enhance the selectivity to benzaldehyde without significantly changing the activity. The results provide insights into the factors that influence the catalytic activity and selectivity in styrene oxidation. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: GOLD NANOPARTICLES ;  PROPENE EPOXIDATION ;  AU-25 NANOCLUSTERS ;  AU ;  CLUSTERS ;  PD ;  ALCOHOLS ;  NANORODS ;  HYDROGEN ;  SITES
语种: 英语
WOS记录号: WOS:000388778000002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150440
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Li, Gao,Jin, Rongchao. Atomic level tuning of the catalytic properties: Doping effects of 25-atom bimetallic nanoclusters on styrene oxidation[J]. CATALYSIS TODAY,2016,278:187-191.
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