Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 214-216 |
| Number of pages | 3 |
| Journal | Journal of Electron Spectroscopy and Related Phenomena |
| Volume | 156-158 |
| DOIs | |
| Publication status | Published - 2007 May 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Radiation
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Spectroscopy
- Physical and Theoretical Chemistry
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Speciation of copper in plasma-melted slag. / Huang, Yu Chun; Wang, Hong-Paul; Huang, Hsin Liang; Huang, Yuh Jeen; Chang, Juu-En; Wei, Yu Ling.
In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 156-158, 01.05.2007, p. 214-216.Research output: Contribution to journal › Article
TY - JOUR
T1 - Speciation of copper in plasma-melted slag
AU - Huang, Yu Chun
AU - Wang, Hong-Paul
AU - Huang, Hsin Liang
AU - Huang, Yuh Jeen
AU - Chang, Juu-En
AU - Wei, Yu Ling
PY - 2007/5/1
Y1 - 2007/5/1
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
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 -