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LAPSE:2023.24330

Structural, Textural, and Catalytic Properties of Ni-CexZr1−xO2 Catalysts for Methane Dry Reforming Prepared by Continuous Synthesis in Supercritical Isopropanol

Svetlana Pavlova, Marina Smirnova, Aleksei Bobin, Svetlana Cherepanova, Vasily Kaichev, Arcady Ishchenko, Aleksandra Selivanova, Vladimir Rogov, Anne-Cécile Roger, Vladislav Sadykov

March 28, 2023

Abstract
A series of 5%Ni-CexZr1−xO2 (x = 0.3, 0.5, 0.7) catalysts has been prepared via one-pot solvothermal continuous synthesis in supercritical isopropanol and incipient wetness impregnation of CexZr1−xO2 obtained by the same route. The textural, structural, red-ox, and catalytic properties in methane dry reforming (MDR) of Ni-modified Ce-Zr oxides synthesized by two routes have been compared. It was shown by XRD, TEM, and Raman spectroscopy that the method of Ni introduction does not affect the phase composition of the catalysts, but determines the dispersion of NiO. Despite a high dispersion of NiO and near-uniform distribution of Ni within Ce-Zr particles observed for the one-pot catalysts, they have shown a lower activity and stability in MDR as compared with impregnated ones. This is a result of a low Ni concentration in the surface layer due to segregation of Ce and decoration of nickel nanoparticles with support species.

Record ID

LAPSE:2023.24330

Keywords

Ce-Zr oxide, methane dry reforming, Ni loading, synthesis in supercritical isopropanol

Subject

Materials

Suggested Citation

Pavlova S, Smirnova M, Bobin A, Cherepanova S, Kaichev V, Ishchenko A, Selivanova A, Rogov V, Roger AC, Sadykov V. Structural, Textural, and Catalytic Properties of Ni-CexZr1−xO2 Catalysts for Methane Dry Reforming Prepared by Continuous Synthesis in Supercritical Isopropanol. (2023). LAPSE:2023.24330

Author Affiliations

Pavlova S: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia
Smirnova M: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia
Bobin A: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia
Cherepanova S: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia
Kaichev V: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia
Ishchenko A: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia
Selivanova A: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Rogov V: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia
Roger AC: Institute of Chemistry and Processes for Energy, Environment and Health, University of Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg, France [ORCID]
Sadykov V: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia; Department of Natural Sciences, Novosibirsk state University, Pirogova street 1, 630090 Novosibirsk, Russia [ORCID]

Journal Name

Energies

Volume

Issue

Article Number

E3728

Year

2020

Publication Date

2020-07-20

DOI:

https://doi.org/10.3390/en13143728