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Study of the relationship between microstructure and performance for NOx storage catalysts
Li, X; Meng, M; Lin, P; Fu, Y; Hu, T; Xie, Y; Zhang, J; Hu TD(胡天斗); Xie YN(谢亚宁); Zhang J(张静)
2002
发表期刊CHEMICAL ENGINEERING RESEARCH & DESIGN
卷号80期号:A2页码:#REF!
通讯作者Meng, M (reprint author), Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China.
文章类型Article
摘要A series of Pt/BaAl2O4-Al2O3 NOx storage catalysts were prepared using the coprecipitation-impregnation method. XRD, XANES and EXAFS were used to characterize the microstructure of barium and platinum species in the samples. Barium exists in the forms of BaAl2O4 and BaCO3 crystallites. With the decreasing of calcination-temperature and barium content, the dispersion of BaAl2O4 phases becomes higher in the samples. In comparison with platinum standard compounds, the magnitude of the Pt-Pt coordination is significantly decreased, and the coordination distance is also shortened by about 0.01 nm. Platinum mainly exists as small atomic clusters, which possess a high dispersion, while some Pt (+4) species still present in the samples. A high dispersion of platinum and barium can greatly enhance the catalyst to store NOx.
关键词NOx Pt/BaAl2O4-Al2O3 storage EXAFS XANES
学科领域Engineering
DOI10.1205/026387602753501915
收录类别SCI
WOS类目Engineering, Chemical
WOS记录号WOS:000174561800008
引用统计
被引频次:14[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/311005/226815
专题多学科研究中心
推荐引用方式
GB/T 7714
Li, X,Meng, M,Lin, P,et al. Study of the relationship between microstructure and performance for NOx storage catalysts[J]. CHEMICAL ENGINEERING RESEARCH & DESIGN,2002,80(A2):#REF!.
APA Li, X.,Meng, M.,Lin, P.,Fu, Y.,Hu, T.,...&张静.(2002).Study of the relationship between microstructure and performance for NOx storage catalysts.CHEMICAL ENGINEERING RESEARCH & DESIGN,80(A2),#REF!.
MLA Li, X,et al."Study of the relationship between microstructure and performance for NOx storage catalysts".CHEMICAL ENGINEERING RESEARCH & DESIGN 80.A2(2002):#REF!.
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