A kinetic and quantum chemical studt on hydrogen peroxide decomposition over carbon, palladium, and palladium-carbon clusters
Activation (k30°С) and thermodynamic (Ea, A0) characteristics been measured of the H2O2 decomposition reaction oxer coal and Pd/C-catalysts have been found to here the greed catalytic activity, palladium being situated on outer surface or within subsurface layers of coal granular The H2O2 decomposit...
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| Дата: | 2018 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | Російська |
| Опубліковано: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2018
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| Онлайн доступ: | https://surfacezbir.com.ua/index.php/surface/article/view/324 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
Репозитарії
Surface| Резюме: | Activation (k30°С) and thermodynamic (Ea, A0) characteristics been measured of the H2O2 decomposition reaction oxer coal and Pd/C-catalysts have been found to here the greed catalytic activity, palladium being situated on outer surface or within subsurface layers of coal granular The H2O2 decomposition reaction has been shown to k controlled by an entropy factor and to occur in similar type reactive complexes it “catalyst - H2O2”, as independent on palladium presence or absence on coal granule. Quantum chemical calculations on the electronic structures of Cn Pdn (n=2-33), and PdnC96 clusters simulated for coal, palladium, and Pd/C-catalysts have shown the decomposition process to depend on cluster sizes and to take place at n>9. In Pd4C96 cluster, electronic systems of C96 and Pd4 are joint what results in increasing donor-acceptor properties of Pd4C96 and those of Pd/C- catalysts what explains experimentally observed for such systems increasing their catalytical activity. |
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