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Studies about the dispersion process and structure of impregnated CuO/ZrO 2 systems
Author(s) -
Yang PengCheng,
Cai XiaoHai,
Zhao LiYan,
Xie YouChang,
Xie Yaning,
Hu Tiandou,
Zhang Jing
Publication year - 2003
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1606
Subject(s) - extended x ray absorption fine structure , calcination , dispersion (optics) , cubic zirconia , monolayer , absorption (acoustics) , oxide , materials science , nitrate , inorganic chemistry , chemistry , crystallography , chemical engineering , analytical chemistry (journal) , absorption spectroscopy , catalysis , metallurgy , nanotechnology , optics , ceramic , composite material , organic chemistry , physics , engineering
Abstract The dispersion process and structure of impregnated CuO/ZrO 2 systems were studied by x‐ray diffraction (XRD) and extended x‐ray absorption fine structure (EXAFS). The results showed that, after being calcined at 773 K, monolayer dispersed cupric nitrate decomposed into monolayer dispersed cupric oxide on zirconia's surface. The dispersion threshold of CuO was related to its precursor, cupric nitrate. The surface‐dispersed Cu nearest coordination structure changed into about five equally long Cu–O bonds. Copyright © 2003 John Wiley & Sons, Ltd.