2003
DOI: 10.1021/jp030091x
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Model Catalyst Studies on Vanadia Particles Deposited onto a Thin-Film Alumina Support. 2. Interaction with Carbon Monoxide

Abstract: The interaction of CO molecules with a model catalyst system formed by alumina-supported vanadia particles was studied utilizing infrared (IR) spectroscopy. A thin, well-ordered alumina film grown on the NiAl(110) alloy surface was used as a support oxide. The structural characterization of this model system has been performed previously by applying scanning tunneling microscopy, X-ray photoelectron spectroscopy, and IR spectroscopy. Exposure to CO at 90 K results in a complex adsorption behavior as a function… Show more

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Cited by 21 publications
(19 citation statements)
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“…10 where the vanadia is prepared by physical vapor deposition of vanadium in an oxygen ambient onto the surface of a silica film. The morphology of the film is granular indicating threedimensional growth of the vanadium oxide particles, which have been proven to be mainly V 2 O 3 particles exposing vanadyl groups at their surface [8][9][10][11]. In this sense they are similar to the single crystal V 2 O 3 (0001) surface.…”
Section: Resultsmentioning
confidence: 97%
See 1 more Smart Citation
“…10 where the vanadia is prepared by physical vapor deposition of vanadium in an oxygen ambient onto the surface of a silica film. The morphology of the film is granular indicating threedimensional growth of the vanadium oxide particles, which have been proven to be mainly V 2 O 3 particles exposing vanadyl groups at their surface [8][9][10][11]. In this sense they are similar to the single crystal V 2 O 3 (0001) surface.…”
Section: Resultsmentioning
confidence: 97%
“…To obtain a more direct insight into structure-reactivity relations supported vanadia systems have been prepared under ultrahigh vacuum conditions on silica, alumina, and ceria thin film supports [8][9][10][11][12][13][14][15][16]. Scanning tunneling microscopy has been used to show that under such conditions the vanadia does not wet the surfaces of silica and alumina even if those surfaces had been exposed to water beforehand.…”
Section: Introductionmentioning
confidence: 99%
“…The assignment of these spectral features is facilitated by comparison with the results on a supported vanadia system previously studied in detail [17,24,25]. For convenience, the bottom curve in Fig.…”
Section: Methodsmentioning
confidence: 99%
“…At the coverage of 1Å, a band centered at 986 cm -1 emerges, which grows in intensity with the coverage. The assignment of these spectral features is facilitated by comparison with the results on a supported vanadia system previously studied in detail (Magg et al 2003a(Magg et al , 2002(Magg et al , 2004. For convenience, the bottom curve in Figure 12a shows the spectrum obtained for the similarly prepared 3.5Å vanadia/alumina sample in the same experimental setup.…”
Section: Martin Schmal and Hans-joachim Freundmentioning
confidence: 99%