| Автор | Y Y Tong |
| Автор | G A Martin |
| Автор | J J van der Klink |
| Дата выпуска | 1994-09-05 |
| dc.description | Theoretical results in the literature for an Rh film indicate that the Fermi level local density of states (E<sub>F</sub> LDOS) at a fixed (small) distance from the atomic planes increases upon coverage with 1/4 monolayer of atomic Li. This should change the response of the surface to incoming reactants, and might be an important factor in the 'promotion' effect of alkalis in catalysis on transition metals. Experimental data on <sup>195</sup>Pt NMR parameters measured on Pt catalysts can, under certain assumptions, be analysed to obtain the average E<sub>F</sub> LDOS at a given type of Pt site (surface, subsurface, bulk). Such an analysis is applied here to Pt catalysts promoted with alkali salts. It is shown that the average E<sub>F</sub> LDOS at surface sites increases by 10-15%. At other sites no detectable changes occur. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | <sup>195</sup>Pt NMR observation of local density of states enhancement on alkali-promoted Pt catalyst surfaces |
| Тип | lett |
| DOI | 10.1088/0953-8984/6/36/001 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | L533 |
| Последняя страница | L538 |
| Аффилиация | Y Y Tong; Inst. de Phys. Exp., Ecole Polytech. Federale de Lausanne, Switzerland |
| Аффилиация | G A Martin; Inst. de Phys. Exp., Ecole Polytech. Federale de Lausanne, Switzerland |
| Аффилиация | J J van der Klink; Inst. de Phys. Exp., Ecole Polytech. Federale de Lausanne, Switzerland |
| Выпуск | 36 |
