Electronic Structure of Magnesia-Ceria Model Catalysts, CO(2) Adsorption, and CO(2) Activation: A Synchrotron Radiation Photoelectron Spectroscopy Study
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Electronic Structure of Magnesia-Ceria Model Catalysts, CO(2) Adsorption, and CO(2) Activation: A Synchrotron Radiation Photoelectron Spectroscopy Study
Popis výsledku v původním jazyce
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
Název v anglickém jazyce
Electronic Structure of Magnesia-Ceria Model Catalysts, CO(2) Adsorption, and CO(2) Activation: A Synchrotron Radiation Photoelectron Spectroscopy Study
Popis výsledku anglicky
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
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BM - Fyzika pevných látek a magnetismus
OECD FORD obor
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Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2011
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Physical Chemistry C
ISSN
1932-7447
e-ISSN
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Svazek periodika
115
Číslo periodika v rámci svazku
17
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
9
Strana od-do
8716-8724
Kód UT WoS článku
000289824200032
EID výsledku v databázi Scopus
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