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Surface Structure of Pt–Ni–Cr/C Catalysts

  • IN COMMEMORATION OF ACADEMICIAN V.V. LUNIN: SELECTED CONTRIBUTIONS FROM HIS STUDENTS AND COLLEAGUES
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Abstract

The composition and structure of the surface phases of catalysts based on Pt, Ni, and Cr (platinum, bi- and trimetallic) supported on a Sibunit carrier are studied via TEM and EDS. The structure of the catalysts before and after reductive hydrogenation are compared. It is found that the metal in the Pt/C system is in a highly dispersed state, mainly in an oxidized form. In bimetallic and ternary catalysts, the surface contains metallic and oxide components; on the surface of Pt–Ni catalyst, the metal phase is more pronounced than with Ni–Cr and Pt–Ni–Cr. Nickel-based catalysts contain large metal particles (up to 30 nm). After reductive hydrogenation, an increase in dispersion and a reduction in the crystallinity of metal particles is observed in all of the studied systems.

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ACKNOWLEDGMENTS

This work was a development of the ideas of Valery Vasil’evich Lunin, Academician of the Russian Academy of Sciences, in the field of physical chemistry and heterogeneous catalysis. The authors are grateful to Prof. Lunin, a fine gentleman, scientist, and teacher.

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Authors and Affiliations

  1. Department of Chemistry, Moscow State University, 119991, Moscow, Russia

    T. V. Bogdan, A. N. Kalenchuk, S. V. Maksimov & V. I. Bogdan

  2. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119334, Moscow, Russia

    T. V. Bogdan, A. N. Kalenchuk & V. I. Bogdan

Authors
  1. T. V. Bogdan
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  2. A. N. Kalenchuk
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  3. S. V. Maksimov
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  4. V. I. Bogdan
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Correspondence to T. V. Bogdan.

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Bogdan, T.V., Kalenchuk, A.N., Maksimov, S.V. et al. Surface Structure of Pt–Ni–Cr/C Catalysts. Russ. J. Phys. Chem. 95, 523–529 (2021). https://doi.org/10.1134/S0036024421030067

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  • DOI: https://doi.org/10.1134/S0036024421030067

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