Nanoscale bimetallic catalysts: are they really bimetallic? |
| |
| Authors: | L. Guczi D. Bazin Z. Schay I. Kovács |
| |
| Affiliation: | 1. Department of Surface Chemistry and Catalysis, Institute of Isotope and Surface Chemistry, CRC HAS, PO Box 77, H-1525 Budapest, Hungary;2. LURE, Université Paris XI, Bât 209D, 91405, Orsay, France |
| |
| Abstract: | The existence of bimetallic particles (and their reducibility and location on/or in the support) in Ru–Co/NaY and Pt–Co/NaY samples has been studied by in situ X-ray adsorption spectroscopy (XAS). It is established that in Ru–Co/NaY the monometallic clusters maintain their identity, whereas in Pt–Co/NaY the existence of small bimetallic particles can be established. In both cases the results are supported by other techniques, such as XPS and temperature-programmed reduction. Copyright © 2002 John Wiley & Sons, Ltd. |
| |
| Keywords: | in situ XAS Pt–Co/NaY Ru–Co/NaY bimetallic nanoparticles |
|
|
