Maxim Zabilsky (Avtor), Iztok Arčon (Avtor), Petar Djinović (Avtor), Elena Tchernychova (Avtor), Albin Pintar (Avtor)

Povzetek

We performed in‐situ XAS study of N 2 O decomposition over CuO/CeO 2 catalysts. The Cu K‐edge and Ce L 3 ‐edge XANES and EXAFS analyses revealed the dynamic and crucial role of Cu 2+ /Cu + and Ce 4+ /Ce 3+ ionic pairs during the catalytic reaction. We observed the initial formation of reduced Cu + and Ce 3+ species during activation in helium atmosphere at 400 °C, while concentration of these species decreased significantly during steady‐state nitrous oxide degradation reaction (2500 ppm N 2 O in He at 400 °C). In‐situ EXAFS analysis further revealed a crucial role of copper‐ceria interface in this catalytic reaction. We observed dynamic changes in average number of Cu‐Ce scatters under reaction conditions, indicating an enlarging the interface between both copper and ceria phases, where electron and oxygen transfer occurs.

Ključne besede

in-situ XAS;Cu EXAFS;CuO/CeO2 nanorod catalys;N2O decomposition;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UNG - Univerza v Novi Gorici
UDK: 54
COBISS: 49314307 Povezava se bo odprla v novem oknu
ISSN: 1867-3880
Št. ogledov: 1579
Št. prenosov: 0
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

URN: URN:SI:UNG
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: str. 1814-1823
Letnik: ǂVol. ǂ13
Zvezek: ǂiss. ǂ7
Čas izdaje: 2021
DOI: 10.1002/cctc.202001829
ID: 12520182