A transient isotopic study for investigating important design parameters of NiCo/Ce0.75Zr0.25O2-δ catalyst for the dry reforming of methane

Autor: M.A. Vasiliades, C.M. Damaskinos, P. Djinović, A. Pintar, A.M. Efstathiou
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Catalysis Communications, Vol 178, Iss , Pp 106674- (2023)
Druh dokumentu: article
ISSN: 1873-3905
DOI: 10.1016/j.catcom.2023.106674
Popis: The effects of metal loading and particle size of NiCo alloy deposited on Ce0.75Zr0.25O2-δ carrier on the carbon reaction paths of dry reforming of methane at 750 °C with respect to the observed long-term activity profiles was elucidated. Small NiCo nanoparticles (7.8 nm) showed progressive deactivation as opposed to the larger ones (43 nm) which exhibited self-regeneration. Towards this goal, appropriate transient kinetic isotopic experiments (use of 18O2 and 13CO2) and other catalyst characterization studies (transient isothermal reduction, XPS, HAADF-STEM-EDX) were conducted. This work paves the way for the design of highly active and coke-resistant reducible metal oxides-supported NiCo.
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