Cluster models for oxidized coal surface and their electrochemical properties
The effect has been considered of oxidization of SKNo coals on the mechanism of reaction of current free  forming stationary potentials (Esp) and reduction of  Men+ metals ions of copper (Cu, Ag, Au) sub-group. Basing on an analysis of reference and experimental data, and a...
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| Datum: | 2008 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | Russisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2008
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| Online Zugang: | https://surfacezbir.com.ua/index.php/surface/article/view/266 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
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Surface| Zusammenfassung: | The effect has been considered of oxidization of SKNo coals on the mechanism of reaction of current free  forming stationary potentials (Esp) and reduction of  Men+ metals ions of copper (Cu, Ag, Au) sub-group. Basing on an analysis of reference and experimental data, and also on studies on electron structure of model clusters of oxidized SKNo coals by semiempirical methods of quantum chemistry (AM1 and RM3), the processes of forming Esp potential and reduction of Men+ have been shown to be  determined  at the small oxidization degrees (for SEK of 0.2…1.0 mg-eg/g) by electron-donor (by work of electron output from coal matrix, ionization potential, Fermi level, energies values of EHOMO) properties and are orbital-controlled , while those great oxidization (for SEK of 1.2…3.0 mg-eg/g ) –are controlled  by physical and chemical properties of functional oxygen-containing groups and are charge-controlled. |
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