Electronic Structure of Magnesia-Ceria Model Catalysts, CO(2) Adsorption, and CO(2) Activation: A Synchrotron Radiation Photoelectron Spectroscopy Study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10108229" target="_blank" >RIV/00216208:11320/11:10108229 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/jp200382y" target="_blank" >http://dx.doi.org/10.1021/jp200382y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jp200382y" target="_blank" >10.1021/jp200382y</a>

Result language
angličtina
Original language name
Electronic Structure of Magnesia-Ceria Model Catalysts, CO(2) Adsorption, and CO(2) Activation: A Synchrotron Radiation Photoelectron Spectroscopy Study
Original language description
We have studied the electronic properties of single crystal based ceria and magnesia-ceria model catalysts, the CO(2), adsorption, and the CO(2)-induced reoxidation of these systems by synchrotron radiation photoelectron spectroscopy (SR-PES). All modelsystems were prepared starting from a fully stoichiometric and well-ordered CeO(2)(111) film grown on Cu(111). Different magnesia-ceria mixed oxide films were prepared by physical vapor deposition (PVD) of magnesium, oxygen treatment, and subsequent annealing. The preparation procedure was varied to obtain samples with different oxidation state, structure, and surface composition. Different carbon-containing species were identified, including surface carbonates formed in the vicinity of Mg(2+) and Ce(3+/4+) and surface carboxylates. The presence of Mg(2+) was observed to strongly enhance carbonate formation but suppress the formation of carboxylates. Changes in the oxidation state of ceria upon CO(2) exposure were monitored with highest
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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