TPD-MS and spectroscopic studies of Cr(acac)3 binding at silica and alumina surface
The mechanism of binding of Cr(acac)3 molecules at active sites of the surface of silica and alumina supports has been studied by temperature programmed desorption mass spectrometry (TPD-MS), UV-vis and IR spectroscopy. It has been found out that surface hydroxyl groups are responsible for binding o...
Збережено в:
| Видавець: | Інститут хімії поверхні ім. О.О. Чуйка НАН України |
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| Дата: | 2010 |
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут хімії поверхні ім. О.О. Чуйка НАН України
2010
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| Назва видання: | Поверхность |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/39327 |
| Теги: |
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| Цитувати: | TPD-MS and spectroscopic studies of Cr(acac)3 binding at silica and alumina surface / L. Davydenko, B. Mischanchuk, V. Pokrovskiy, I. Babich, Yu. Plyuto // Поверхность. — 2010. — Вип. 2(17). — С. 119-128. — Бібліогр.: 20 назв. — англ. |
Репозиторії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The mechanism of binding of Cr(acac)3 molecules at active sites of the surface of silica and alumina supports has been studied by temperature programmed desorption mass spectrometry (TPD-MS), UV-vis and IR spectroscopy. It has been found out that surface hydroxyl groups are responsible for binding of Cr(acac)3 molecules only in the case of silica support due to hydrogen bonding with acetylacetonate ligand. In contrast, the binding of Cr(acac)3 molecules at the alumina surface can be due to donor-acceptor interaction of π-electrons of acetylacetonate ligands with Al↑3+ sites. |
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