Attributes | Values |
---|
rdf:type
| |
rdfs:seeAlso
| |
Description
| - Alumina-supported mixed bimetallic Rh-V thin films, with the overall thickness of 0.8 ML, were prepared under the ultrahigh vacuum (UHV) conditions and characterized with respect to their electronic and CO adsorption properties. X-ray photoelectron spectroscopy (XPS) was utilized to characterize electronic changes accompanying bimetallic Rh-V interaction and interaction between metal and polycrystalline gamma-Al(2)O(3) substrate. The chemisorption properties were probed by temperature-programmed desorption spectroscopy (TPD) of CO molecules. The electronic and chemisorption properties of the mixed layers were compared with pure Rh and V layers grown on the same gamma-Al(2)O(3) substrate and with a model bimetallic Rh-V system prepared by V deposition on a polycrystalline Rh foil. By varying the preparation conditions, we observed a strong dependence of the studied properties on the position of the V atoms. The presence of V atoms on the surface led to a fast deactivation, while vanadium presented under the surface resulted in a weakening of CO-metal surface bond, a change in the proportion of the adsorption side species, and an increase of CO dissociation. (C) 2011 Elsevier B. V. All rights reserved.
- Alumina-supported mixed bimetallic Rh-V thin films, with the overall thickness of 0.8 ML, were prepared under the ultrahigh vacuum (UHV) conditions and characterized with respect to their electronic and CO adsorption properties. X-ray photoelectron spectroscopy (XPS) was utilized to characterize electronic changes accompanying bimetallic Rh-V interaction and interaction between metal and polycrystalline gamma-Al(2)O(3) substrate. The chemisorption properties were probed by temperature-programmed desorption spectroscopy (TPD) of CO molecules. The electronic and chemisorption properties of the mixed layers were compared with pure Rh and V layers grown on the same gamma-Al(2)O(3) substrate and with a model bimetallic Rh-V system prepared by V deposition on a polycrystalline Rh foil. By varying the preparation conditions, we observed a strong dependence of the studied properties on the position of the V atoms. The presence of V atoms on the surface led to a fast deactivation, while vanadium presented under the surface resulted in a weakening of CO-metal surface bond, a change in the proportion of the adsorption side species, and an increase of CO dissociation. (C) 2011 Elsevier B. V. All rights reserved. (en)
|
Title
| - XPS and TPD investigation of CO adsorption on mixed Rh-V layers supported by gamma-alumina
- XPS and TPD investigation of CO adsorption on mixed Rh-V layers supported by gamma-alumina (en)
|
skos:prefLabel
| - XPS and TPD investigation of CO adsorption on mixed Rh-V layers supported by gamma-alumina
- XPS and TPD investigation of CO adsorption on mixed Rh-V layers supported by gamma-alumina (en)
|
skos:notation
| - RIV/00216208:11320/11:10108201!RIV12-GA0-11320___
|
http://linked.open...avai/riv/aktivita
| |
http://linked.open...avai/riv/aktivity
| - P(GD202/09/H041), S, Z(MSM0021620834)
|
http://linked.open...iv/cisloPeriodika
| |
http://linked.open...vai/riv/dodaniDat
| |
http://linked.open...aciTvurceVysledku
| |
http://linked.open.../riv/druhVysledku
| |
http://linked.open...iv/duvernostUdaju
| |
http://linked.open...titaPredkladatele
| |
http://linked.open...dnocenehoVysledku
| |
http://linked.open...ai/riv/idVysledku
| - RIV/00216208:11320/11:10108201
|
http://linked.open...riv/jazykVysledku
| |
http://linked.open.../riv/klicovaSlova
| - Carbon monoxide; Vanadium; Rhodium; Temperature programmed desorption; X-ray photoelectron spectroscopy; Model catalyst (en)
|
http://linked.open.../riv/klicoveSlovo
| |
http://linked.open...odStatuVydavatele
| |
http://linked.open...ontrolniKodProRIV
| |
http://linked.open...i/riv/nazevZdroje
| |
http://linked.open...in/vavai/riv/obor
| |
http://linked.open...ichTvurcuVysledku
| |
http://linked.open...cetTvurcuVysledku
| |
http://linked.open...vavai/riv/projekt
| |
http://linked.open...UplatneniVysledku
| |
http://linked.open...v/svazekPeriodika
| |
http://linked.open...iv/tvurceVysledku
| - Matolín, Vladimír
- Píš, Igor
- Nehasil, Václav
|
http://linked.open...ain/vavai/riv/wos
| |
http://linked.open...n/vavai/riv/zamer
| |
issn
| |
number of pages
| |
http://bibframe.org/vocab/doi
| - 10.1016/j.apsusc.2011.09.025
|
http://localhost/t...ganizacniJednotka
| |