The polymerization of acetylene on supported metal clusters
The polymerization of acetylene was studied by thermal programmed reaction on model catalysts consisting of size-selected Ag, Rh, and Pd atoms and Pdn (1 ≤ n ≤ 30) clusters on well-characterized MgO(111) thin films. In a single-pass heating cycle experiment, benzene, butadiene, and butane were ca...
Збережено в:
| Дата: | 2006 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2006
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120894 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | The polymerization of acetylene on supported metal clusters / S. Gilb, M. Arenz, U. Heiz // Физика низких температур. — 2006. — Т. 32, № 11. — С. 1441–1448. — Бібліогр.: 31 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | The polymerization of acetylene was studied by thermal programmed reaction on model
catalysts consisting of size-selected Ag, Rh, and Pd atoms and Pdn (1 ≤ n ≤ 30) clusters on
well-characterized MgO(111) thin films. In a single-pass heating cycle experiment, benzene,
butadiene, and butane were catalyzed with different selectivities as function of cluster size:
palladium and rhodium atoms selectively produce benzene, and the highest selectivity for
butadiene is observed for Pd₆, whereas Pd₂₀ reveals the highest selectivity for butane. Ag atoms
are inert. These results provide an atom-by-atom observation of the selectivity of small cluster
catalysts. |
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