TY - JOUR
T1 - Speciation of copper in plasma-melted slag
AU - Huang, Yu Chun
AU - Wang, H. Paul
AU - Huang, Hsin Liang
AU - Huang, Yuh Jeen
AU - Chang, Juu En
AU - Wei, Yu Ling
N1 - Funding Information:
The financial support of the Taiwan National Science Council and National Synchrotron Radiation Research Center (NSRRC) is gratefully acknowledged. We also thank Prof. Y.W. Yang and Dr. J.-F. Lee of the NSRRC for their helps in the EXAFS experiments.
PY - 2007/5
Y1 - 2007/5
N2 - Speciation of copper in the laboratory waste incineration ashes and plasma-melted slag has been studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXFAS) spectroscopies. The component-fitted XANES spectra show that main copper species in the bottom and fly ashes are CuO (9-45%), Cu(OH)2 (25-40%) and nanosize CuO (30-35%). During the plasma melting process at 1773 K, about 97% of Cu2S in the slag is observed possibly due to sulfurization and self-reduction of CuO at high temperatures. By EXAFS, we also found that copper in the bottom and fly ashes possessed Cu{single bond}O bond distances of 1.97 and 1.99 Å with coordination numbers (CNs) of 2.1 and 2.3, respectively. In the slag, the bond distance of Cu-S is 2.3 Å with a CN of 3.8.
AB - Speciation of copper in the laboratory waste incineration ashes and plasma-melted slag has been studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXFAS) spectroscopies. The component-fitted XANES spectra show that main copper species in the bottom and fly ashes are CuO (9-45%), Cu(OH)2 (25-40%) and nanosize CuO (30-35%). During the plasma melting process at 1773 K, about 97% of Cu2S in the slag is observed possibly due to sulfurization and self-reduction of CuO at high temperatures. By EXAFS, we also found that copper in the bottom and fly ashes possessed Cu{single bond}O bond distances of 1.97 and 1.99 Å with coordination numbers (CNs) of 2.1 and 2.3, respectively. In the slag, the bond distance of Cu-S is 2.3 Å with a CN of 3.8.
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U2 - 10.1016/j.elspec.2006.11.056
DO - 10.1016/j.elspec.2006.11.056
M3 - Article
AN - SCOPUS:34247120075
VL - 156-158
SP - 214
EP - 216
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
SN - 0368-2048
ER -