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

M.A. Vasiliades; C.M. Damaskinos; P. Djinović; A. Pintar; A.M. Efstathiou

Catalysis Communications (May 2023)

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

M.A. Vasiliades,
C.M. Damaskinos,
P. Djinović,
A. Pintar,
A.M. Efstathiou

Affiliations

M.A. Vasiliades: Heterogeneous Catalysis Laboratory, Department of Chemistry, University of Cyprus, 1 University Ave., University Campus, 2109 Nicosia, Cyprus
C.M. Damaskinos: Heterogeneous Catalysis Laboratory, Department of Chemistry, University of Cyprus, 1 University Ave., University Campus, 2109 Nicosia, Cyprus
P. Djinović: Department of Inorganic Chemistry and Technology, National Institute of Chemistry, SI-1001 Ljubljana, Slovenia
A. Pintar: Department of Inorganic Chemistry and Technology, National Institute of Chemistry, SI-1001 Ljubljana, Slovenia
A.M. Efstathiou: Heterogeneous Catalysis Laboratory, Department of Chemistry, University of Cyprus, 1 University Ave., University Campus, 2109 Nicosia, Cyprus; Corresponding author.

Journal volume & issue: Vol. 178
p. 106674

Abstract

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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.

Published in Catalysis Communications

ISSN: 1566-7367 (Print); 1873-3905 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/catalysis-communications

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