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Effect of Ce/Zr Composition on Structure and Properties of Ce1−xZrxO2 Oxides and Related Ni/Ce1−xZrxO2 Catalysts for CO2 Methanation Full article

Journal Nanomaterials
, E-ISSN: 2079-4991
Output data Year: 2022, Volume: 12, Number: 18, Article number : 3207, Pages count : 16 DOI: 10.3390/nano12183207
Tags Ni/Ce1-xZrxO2 catalysts; mixed oxides; structure; microstructure; methanation; carbon dioxide
Authors Pakharukova Vera P. 1 , Potemkin Dmitriy I. 1 , Rogozhnikov Vladimir N. 1 , Stonkus Olga A. 1 , Gorlova Anna M. 1,2 , Nikitina Nadezhda A. 1,3 , Suprun Evgeniy A. 1 , Brayko Andrey S. 1 , Rogov Vladimir A. 1 , Snytnikov Pavel V. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Pr. Lavrentieva 5, 630090 Novosibirsk, Russia
2 Department of Natural Sciences, Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
3 Department of Chemistry, Moscow State University, Leninskie Gory St., 1, 119991 Moscow, Russia

Funding (1)

1 Russian Science Foundation 21-73-20075

Abstract: Ce1−xZrxO2 oxides (x = 0.1, 0.25, 0.5) prepared via the Pechini route were investigated using XRD analysis, N2 physisorption, TEM, and TPR in combination with density functional theory calculations. The Ni/Ce1−xZrxO2 catalysts were characterized via XRD analysis, SEM-EDX, TEM-EDX, and CO chemisorption and tested in carbon dioxide methanation. The obtained Ce1−xZrxO2 materials were single-phase solid solutions. The increase in Zr content intensified crystal structure strains and favored the reducibility of the Ce1−xZrxO2 oxides but strongly affected their microstructure. The catalytic activity of the Ni/Ce1−xZrxO2 catalysts was found to depend on the composition of the Ce1−xZrxO2 supports. The detected negative effect of Zr content on the catalytic activity was attributed to the decrease in the dispersion of the Ni0 nanoparticles and the length of metal–support contacts due to the worsening microstructure of Ce1−xZrxO2 oxides. The improvement of the redox properties of the Ce1−xZrxO2 oxide supports through cation modification can be negated by changes in their microstructure and textural characteristics.
Cite: Pakharukova V.P. , Potemkin D.I. , Rogozhnikov V.N. , Stonkus O.A. , Gorlova A.M. , Nikitina N.A. , Suprun E.A. , Brayko A.S. , Rogov V.A. , Snytnikov P.V.
Effect of Ce/Zr Composition on Structure and Properties of Ce1−xZrxO2 Oxides and Related Ni/Ce1−xZrxO2 Catalysts for CO2 Methanation
Nanomaterials. 2022. V.12. N18. 3207 :1-16. DOI: 10.3390/nano12183207 WOS Scopus РИНЦ ANCAN PMID OpenAlex
Dates:
Submitted: Aug 25, 2022
Accepted: Sep 10, 2022
Published print: Sep 15, 2022
Published online: Sep 15, 2022
Identifiers:
Web of science: WOS:000858748600001
Scopus: 2-s2.0-85138658864
Elibrary: 50357854
Chemical Abstracts: 2022:2513836
Chemical Abstracts (print): 180:225245
PMID: 36144993
OpenAlex: W4296052473
Citing:
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Scopus 8
Web of science 8
Elibrary 7
OpenAlex 9
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