Structural, Textural, and Catalytic Properties of Ni-Ce x Zr 1?x O 2 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 and Vladislav Sadykov
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Svetlana Pavlova: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Marina Smirnova: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Aleksei Bobin: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Svetlana Cherepanova: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Vasily Kaichev: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Arcady Ishchenko: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Aleksandra Selivanova: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Vladimir Rogov: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia
Anne-Cécile Roger: Institute of Chemistry and Processes for Energy, Environment and Health, University of Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg, France
Vladislav Sadykov: Boreskov Institute of Catalysis, prosp. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia

Energies, 2020, vol. 13, issue 14, 1-20

Abstract: A series of 5%Ni-Ce x Zr 1−x O 2 (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 Ce x Zr 1−x O 2 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.

Keywords: methane dry reforming; Ce-Zr oxide; synthesis in supercritical isopropanol; Ni loading (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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