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Catalytic Activity of Highly Dispersed Systems PdО/Mn0.20Ce0.80O2–δ and PdО/M0.05Mn0.15Ce0.80O2–δ, where M = Cu, Bi, in Complete Oxidation of Methane

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Abstract

Highly dispersed solid solutions Mn0.20Ce0.80O2–δ and M0.05Mn0.15Ce0.80О2–δ, where M = Cu, Bi, were prepared by coprecipitation followed by heat treatment. The materials were characterized by X-ray diffraction analysis, energy-dispersive X-ray spectroscopy, low-temperature nitrogen adsorption, transmission electron microscopy, and gas chromatography. The compounds prepared exhibit high activity in complete oxidation of methane. The solid solutions show promise as palladium supports. The 0.5% PdО/Mn0.20Ce0.80O2–δ and 0.5% PdО/Cu0.05Mn0.15Ce0.80O2–δ samples synthesized surpass in the catalytic activity the reference catalyst 0.5 PdО/γ-Al2O3. Thus, it is appropriate to use the complex oxide formulations as supports of the active component.

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ACKNOWLEDGMENTS

The authors are grateful to the Center for Shared Use of the Mendeleev University of Chemical Technology of Russia for studying the elemental composition of the samples.

Funding

The study was performed within the framework of the government assignment of the Ministry of Science and Higher Education of the Russian Federation (FSSM-2023-0004: Scientific Principles of Catalysis of Promising Redox Reactions of Selective Transformation of Hydrocarbons and Oxygen-Containing Organic Substrates by Systems Based on Transition Metals).

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology of Russia, 125047, Moscow, Russia

    E. Yu. Liberman, E. A. Simakina, T. V. Kon’kova, V. N. Grunskii, A. D. Stoyanova & A. V. Denisenko

  2. AO NIIgrafit, 111524, Moscow, Russia

    B. S. Kleusov

Authors
  1. E. Yu. Liberman
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  2. B. S. Kleusov
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  3. E. A. Simakina
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  4. T. V. Kon’kova
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  5. V. N. Grunskii
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  6. A. D. Stoyanova
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  7. A. V. Denisenko
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Contributions

E.Yu. Liberman and V.N. Grunskii: concept of the study, formulation of the research goals, analysis of the experimental results; E.A. Simakina and A.D. Stoyanova: synthesis of the samples; B.S. Kleusov: X-ray diffraction analysis; T.V. Kon’kova: determination of structural characteristics; A.V. Denisenko: determination of catalytic activity.

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The authors declare that they have no conflict of interest.

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Translated from Zhurnal Prikladnoi Khimii, No. 2, pp. 162–168, February, 2023 https://doi.org/10.31857/S0044461823020044

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Liberman, E.Y., Kleusov, B.S., Simakina, E.A. et al. Catalytic Activity of Highly Dispersed Systems PdО/Mn0.20Ce0.80O2–δ and PdО/M0.05Mn0.15Ce0.80O2–δ, where M = Cu, Bi, in Complete Oxidation of Methane. Russ J Appl Chem 96, 156–161 (2023). https://doi.org/10.1134/S1070427223020053

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