| Naslov: | CO[sub]2 activation over nanoshaped CeO[sub]2 decorated with nickel for low-temperature methane dry reforming |
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| Avtorji: | ID Lorber, Kristijan, KI (Avtor)
ID Zavašnik, Janez, IJS (Avtor)
ID Arčon, Iztok, UNG (Avtor)
ID Huš, Matej, KI (Avtor)
ID Teržan, Janvit, KI (Avtor)
ID Likozar, Blaž, KI (Avtor)
ID Djinović, Petar, KI (Avtor) |
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| Datoteke: |
Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u.  |
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | UNG - Univerza v Novi Gorici
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| Opis: | Dry reforming of methane (DRM) is a promising way to
convert methane and carbon dioxide into H2 and CO (syngas). CeO2
nanorods, nanocubes, and nanospheres were decorated with 1−4 wt % Ni.
The materials were structurally characterized using TEM and in situ
XANES/EXAFS. The CO2 activation was analyzed by DFT and
temperature-programmed techniques combined with MS-DRIFTS. Synthesized CeO2 morphologies expose {111} and {100} terminating facets,
varying the strength of the CO2 interaction and redox properties, which
influence the CO2 activation. Temperature-programmed CO2 DRIFTS
analysis revealed that under hydrogen-lean conditions mono- and bidentate
carbonates are hydrogenated to formate intermediates, which decompose
to H2O and CO. In excess hydrogen, methane is the preferred reaction
product. The CeO2 cubes favor the formation of a polydentate carbonate
species, which is an inert spectator during DRM at 500 °C. Polydentate covers a considerable fraction of ceria’s surface, resulting in
less-abundant surface sites for CO2 dissociation |
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| Ključne besede: | surface carbonates, in situ characterization, Ni XANES, Ni EXAFS, spectator species, CeO2 nanoshapes, CO2 activation |
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| Št. strani: | 17 str. |
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| Številčenje: | 1 |
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| PID: | 20.500.12556/RUNG-7500 |
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| COBISS.SI-ID: | 114743555 |
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| ISSN pri članku: | 1944-8252 |
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| DOI: | 10.1021/acsami.2c05221 |
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| NUK URN: | URN:SI:UNG:REP:ZRF0YW9F |
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| Datum objave v RUNG: | 13.07.2022 |
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| Število ogledov: | 1419 |
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| Število prenosov: | 0 |
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| Metapodatki: |     |
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