Characterization of a Pd–Fe Bimetallic Model Catalyst Full article
Journal |
Surface Science
ISSN: 0039-6028 |
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Output data | Year: 2007, Volume: 601, Number: 10, Pages: 2105-2116 Pages count : 13 DOI: 10.1016/j.susc.2007.02.023 | ||
Tags | Aluminum oxide, FMR, IRAS, Iron, Model catalyst, Palladium, TPD, XPS | ||
Authors |
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Abstract:
Small bimetallic Pd–Fe particles supported on a well ordered alumina film grown on NiAl (1 1 0) were studied focusing on the geometric, electronic, adsorption, as well as magnetic properties. The morphology, growth mode and surface composition were investigated by combining scanning tunneling microscopy (STM), temperature-programmed desorption (TPD) and infrared spectroscopy (IRAS) using CO as a probe molecule. Information on the electronic properties of the bimetallic systems was obtained by means of X-ray photoelectron spectroscopy (XPS). These measurements were amended by in situ ferromagnetic resonance spectroscopy to address the magnetic properties of the bimetallic particles. The subsequent deposition of the metals at 300 K varying the order of metal deposition resulted in two distinct bimetallic systems. Pd deposited on existing Fe particles forms a shell, however, FMR and XPS suggest that intermixing of Pd and Fe occurs to some extent. For the reverse order, a larger amount of Fe is required to coat Pd particles, due to the strong tendency of Pd to segregate to the surface of the particles.
Cite:
Felicissimo M.P.
, Martyanov O.N.
, Risse T.
, Freund H-J.
Characterization of a Pd–Fe Bimetallic Model Catalyst
Surface Science. 2007. V.601. N10. P.2105-2116. DOI: 10.1016/j.susc.2007.02.023 WOS Scopus РИНЦ
Characterization of a Pd–Fe Bimetallic Model Catalyst
Surface Science. 2007. V.601. N10. P.2105-2116. DOI: 10.1016/j.susc.2007.02.023 WOS Scopus РИНЦ
Dates:
Submitted: | Oct 20, 2006 |
Accepted: | Feb 14, 2007 |
Published online: | Feb 28, 2007 |
Published print: | May 15, 2007 |
Identifiers:
Web of science | WOS:000247090500005 |
Scopus | 2-s2.0-34247895394 |
Elibrary | 12201085 |
Chemical Abstracts | 2007:518208 |
Chemical Abstracts (print) | 146:529001 |
OpenAlex | W2089826509 |