IHEP OpenIR
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)
2013
Source PublicationCHEMISTRY OF MATERIALS
ISSN0897-4756
EISSN1520-5002
Volume25Issue:7Pages:1040-1046
AbstractHow 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.
KeywordNi nanocatalyst surface defect low-temperature activation CO2 methanation layered double hydroxides
Subject AreaChemistry; Materials Science
DOI10.1021/cm303517z
Indexed BySCI
Language英语
WOS IDWOS:000317438600004
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/224100
Collection中国科学院高能物理研究所
Recommended Citation
GB/T 7714
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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