A Surface Defect-Promoted Ni Nanocatalyst with Simultaneously Enhanced Activity and Stability
He, S; Li, CM; Chen, H; Su, DS; Zhang, BS; Cao, XZ; Wang, BY; Wei, M; Evans, DG; Duan, X;曹兴忠; Wang BY(王宝义)
刊名CHEMISTRY OF MATERIALS
2013
卷号25期号:7页码:1040-1046
关键词Ni nanocatalyst surface defect low-temperature activation CO2 methanation layered double hydroxides
学科分类Chemistry; Materials Science
DOI10.1021/cm303517z
英文摘要How to achieve supported metal nanocatalysts with simultaneously enhanced activity and stability is of vital importance in heterogeneous catalysis and remains a challenging goal. In this work, a surface defect-promoted Ni nanocatalyst with a high dispersion and high particle density embedded on a hierarchical Al2O3 matrix was fabricated via a facile method involving an in situ reduction process, which exhibits excellent activity and stability simultaneously for the reaction of CO2 methanation. HRTEM, HAADF-STEM, EXAFS, and positron annihilation spectroscopy demonstrate the existence of abundant surface vacancy clusters that serve as active sites, accounting for the significantly enhanced low the temperature activity of the supported Ni nanoparticles. In addition, the anchoring effect from support gives rise to a high reaction stability, without sintering and/or aggregation of active species during long-term use.
收录类别SCI
WOS记录号WOS:000317438600004
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被引频次:61[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224100
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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He, S,Li, CM,Chen, H,et al. A Surface Defect-Promoted Ni Nanocatalyst with Simultaneously Enhanced Activity and Stability[J]. CHEMISTRY OF MATERIALS,2013,25(7):1040-1046.
APA He, S.,Li, CM.,Chen, H.,Su, DS.,Zhang, BS.,...&王宝义.(2013).A Surface Defect-Promoted Ni Nanocatalyst with Simultaneously Enhanced Activity and Stability.CHEMISTRY OF MATERIALS,25(7),1040-1046.
MLA He, S,et al."A Surface Defect-Promoted Ni Nanocatalyst with Simultaneously Enhanced Activity and Stability".CHEMISTRY OF MATERIALS 25.7(2013):1040-1046.
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