Study of the local structure of supported nanostructural platinum catalysts |
| |
| Authors: | I É Beck V V Kriventsov D P Ivanov E P Yakimchuk B N Novgorodov V I Zaikovskii V I Bukhtiyarov |
| |
| Institution: | 1.G. K. Boreskov Institute of Catalysis, Siberian Division,Russian Academy of Sciences,Novosibirsk,Russia;2.Novosibirsk State University,Novosibirsk,Russia |
| |
| Abstract: | The possibility of controlling the state of platinum deposited on the support surface via minor changes in the catalyst preparation procedure is demonstrated using a series of highly dispersed Pt/γ-Al2O3 catalysts with different particle size of the active component. Dispersity, local structure and electronic state of supported platinum were examined by a combination of high resolution transmission electron microscopy and X-ray absorption spectroscopy (EXAFS/XANES). It was shown that various platinum species can be obtained on the surface of the support: bulk or surface Pt(II) or Pt(IV) oxides, mixed metal-oxide structures, bulk particles of metallic platinum, and two-dimensional surface Pt0 particles strongly interacting with the support. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
