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学科主题: 物理化学
题名: Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions
作者: Cai, Jiaying1, 2;  Ma, Hong1;  Zhang, Junjie1, 2;  Song, Qi1;  Du, Zhongtian1;  Huang, Yizheng1;  Xu, Jie1
通讯作者: 徐杰
关键词: 5-hydroxymethylfurfural ;  biomass ;  gold ;  nanostructures ;  oxidation
刊名: CHEMISTRY-A EUROPEAN JOURNAL
发表日期: 2013-10-11
DOI: 10.1002/chem.201301735
卷: 19, 期:42, 页:14215-14223
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: DNL06
项目归属: DNL0601
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
资助者: 1,1
研究领域[WOS]: Chemistry
英文摘要: Au nanoclusters with an average size of approximately 1nm size supported on HY zeolite exhibit a superior catalytic performance for the selective oxidation of 5-hydroxymethyl-2-furfural (HMF) into 2,5-furandicarboxylic acid (FDCA). It achieved >99% yield of 2,5-furandicarboxylic acid in water under mild conditions (60 degrees C, 0.3MPa oxygen), which is much higher than that of Au supported on metal oxides/hydroxide (TiO2, CeO2, and Mg(OH)(2)) and channel-type zeolites (ZSM-5 and H-MOR). Detailed characterizations, such as X-ray diffraction, transmission electron microscopy, N-2-physisorption, and H-2-temperature-programmed reduction (TPR), revealed that the Au nanoclusters are well encapsulated in the HY zeolite supercage, which is considered to restrict and avoid further growing of the Au nanoclusters into large particles. The acidic hydroxyl groups of the supercage were proven to be responsible for the formation and stabilization of the gold nanoclusters. Moreover, the interaction between the hydroxyl groups in the supercage and the Au nanoclusters leads to electronic modification of the Au nanoparticles, which is supposed to contribute to the high efficiency in the catalytic oxidation of HMF to FDCA.
关键词[WOS]: 2,5-FURANDICARBOXYLIC ACID ;  SELECTIVE OXIDATION ;  CATALYTIC-ACTIVITY ;  METAL-CLUSTERS ;  LACTIC-ACID ;  AU ;  SURFACE ;  CHEMICALS ;  WATER ;  NANOPARTICLES
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000325488900033
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119344
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, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Cai, Jiaying,Ma, Hong,Zhang, Junjie,et al. Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions[J]. CHEMISTRY-A EUROPEAN JOURNAL,2013,19(42):14215-14223.
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