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Naslov:CO[sub]2 activation over nanoshaped CeO[sub]2 decorated with nickel for low-temperature methane dry reforming
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)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
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
Ključne besede:surface carbonates, in situ characterization, Ni XANES, Ni EXAFS, spectator species, CeO2 nanoshapes, CO2 activation
Št. strani:17 str.
Številčenje:1
PID:20.500.12556/RUNG-7500 Novo okno
COBISS.SI-ID:114743555 Novo okno
ISSN pri članku:1944-8252
DOI:10.1021/acsami.2c05221 Novo okno
NUK URN:URN:SI:UNG:REP:ZRF0YW9F
Datum objave v RUNG:13.07.2022
Število ogledov:1554
Število prenosov:0
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Gradivo je del revije

Naslov:ACS applied materials & interfaces
Skrajšan naslov:ACS Appl. Mater. Interfaces

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