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Nanoscale bimetallic catalysts: are they really bimetallic?
Author(s) -
Guczi L.,
Bazin D.,
Schay Z.,
Kovács I.
Publication year - 2002
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1255
Subject(s) - bimetallic strip , x ray absorption spectroscopy , x ray photoelectron spectroscopy , nanoscopic scale , catalysis , materials science , adsorption , chemical engineering , chemistry , nanotechnology , absorption spectroscopy , physics , organic chemistry , optics , engineering
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.