Enhanced reactivity of Pt nanoparticles supported on ceria thin films during ethylene dehydrogenation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10108249" target="_blank" >RIV/00216208:11320/11:10108249 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/c0cp00345j" target="_blank" >http://dx.doi.org/10.1039/c0cp00345j</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c0cp00345j" target="_blank" >10.1039/c0cp00345j</a>
Alternative languages
Result language
angličtina
Original language name
Enhanced reactivity of Pt nanoparticles supported on ceria thin films during ethylene dehydrogenation
Original language description
The adsorption and reaction of ethylene on Pt/CeO(2-x)/Cu(111) model catalysts were studied by means of high resolution photoelectron spectroscopy (HR-PES) in conjunction with resonant photoemission spectroscopy (RPES). The dehydrogenation mechanism is compared to the HR-PES data obtained on a Pt(111) single crystal under identical conditions. It was found that the Pt nanoparticle system shows a substantially enhanced reactivity and several additional reaction pathways. In sharp contrast to Pt(111), partial dehydrogenation of ethylene on the supported Pt nanoparticles already starts at temperatures as low as 100 K. Similar to the single crystal surface, dehydrogenation occurs via the isomer ethylidene (CHCH(3)) and then mainly via ethylidyne (CCH(3)).In the temperature region between 100 and 250 K there is strong evidence for spillover of hydrocarbon fragments to the ceria support. In addition, splitting of ethylene to C(1) fragments is more facile than on Pt(111), giving rise to the
Czech name
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Czech description
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Classification
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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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Chemistry Chemical Physics
ISSN
1463-9076
e-ISSN
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Volume of the periodical
13
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
253-261
UT code for WoS article
000285099800029
EID of the result in the Scopus database
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