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题名: Silica-supported Au-Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols
作者: Li, Wanjun1, 2;  Wang, Aiqin1;  Liu, Xiaoyan1;  Zhang, Tao1
关键词: Gold ;  Copper ;  Au-Cu ;  Au-Ag ;  Synergetic effect ;  Alcohol oxidation
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2012-08-08
DOI: 10.1016/j.apcata.2012.05.014
卷: 433, 页:146-151
收录类别: SCI ;  CCR
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: Silica-supported Au-Cu and Au-Ag alloy nanoparticles were synthesized, characterized, and tested for the aerobic oxidation of alcohols. The results showed that Au-Cu alloy catalyst exhibited good activity and selectivity to aldehydes for a variety of structurally diverse alcohols and a strong synergistic effect was found between Au and Cu. In contrast, Au-Ag alloy catalysts were less active and selective for the oxidation of alcohols although they have very similar particle sizes to the Au-Cu alloy catalysts. Besides the chemical compositions, the pretreatment conditions were found to affect significantly the catalytic performances, and the reduction treatment is necessary for obtaining a high activity and selectivity, suggesting Au-Cu alloy is the active phase. Moreover, the catalyst could be reused if only the catalyst after the reaction was subjected to reduction treatment. (C) 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: OXIDANT-FREE DEHYDROGENATION ;  AEROBIC OXIDATION ;  HETEROGENEOUS CATALYST ;  MOLECULAR-OXYGEN ;  MESOPOROUS SUPPORT ;  CO OXIDATION ;  MIXED OXIDES ;  MG-AL ;  GOLD ;  CLUSTERS
语种: 英语
WOS记录号: WOS:000307321400019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138031
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Li, Wanjun,Wang, Aiqin,Liu, Xiaoyan,et al. Silica-supported Au-Cu alloy nanoparticles as an efficient catalyst for selective oxidation of alcohols[J]. APPLIED CATALYSIS A-GENERAL,2012,433:146-151.
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