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Study of the Interaction between Components at Different Stages of Preparing Ru–Rb/Sibunit Catalysts for the Decomposition of Ammonia

  • CHEMICAL KINETICS AND CATALYSIS
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Abstract

The interaction between the components of a Ru–Rb/Sibunit catalyst for the decomposition of ammonia is studied via XAFS spectroscopy, X-ray diffraction with synchrotron radiation, and high-resolution transmission electron microscopy. The porous structure of the samples is examined at the stages of preparation. A set of measures reveals the presence of ruthenium in the catalyst (mainly in the metallic state) and the absence of joint phases of ruthenium and rubidium. It is found that rubidium is in an oxidized state in the catalyst in the form of compounds in direct contact with particles of active component and comparable in size to the latter, and as small clusters found mainly in the structure of carbon support.

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ACKNOWLEDGMENTS

Our physicochemical studies were performed on equipment at the Omsk regional shared resource center, Siberian Branch, Russian Academy of Sciences.

Funding

This work was performed as part of a State Task for the Boreskov Institute of Catalysis under the National Academy of Sciences’ Program of Basic Research for 2013–2020, directive V.46, project no. V.46.2.5 (registration no. АААА-А17-117021450096-8).

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Authors and Affiliations

  1. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Center for New Chemical Technologies, 644040, Omsk, Russia

    K. N. Iost, V. A. Borisov, V. L. Temerev, Yu. V. Surovikin, M. V. Trenikhin, D. A. Shlyapin & P. G. Tsyrul’nikov

  2. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    N. S. Smirnova

  3. Omsk State Technical University, 644050, Omsk, Russia

    V. A. Borisov & M. V. Trenikhin

  4. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    V. V. Kriventsov, Ya. V. Zubavichus & E. Yu. Gerasimov

  5. National Research Center Kurchatov Institute, 123182, Moscow, Russia

    E. V. Khramov

Authors
  1. K. N. Iost
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  2. N. S. Smirnova
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  3. V. A. Borisov
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  4. V. L. Temerev
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  5. Yu. V. Surovikin
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  6. V. V. Kriventsov
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  7. E. V. Khramov
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  8. Ya. V. Zubavichus
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  9. M. V. Trenikhin
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  10. E. Yu. Gerasimov
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  11. D. A. Shlyapin
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  12. P. G. Tsyrul’nikov
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Corresponding authors

Correspondence to K. N. Iost or V. A. Borisov.

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Translated by A. Bannov

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Iost, K.N., Smirnova, N.S., Borisov, V.A. et al. Study of the Interaction between Components at Different Stages of Preparing Ru–Rb/Sibunit Catalysts for the Decomposition of Ammonia. Russ. J. Phys. Chem. 94, 2201–2208 (2020). https://doi.org/10.1134/S0036024420110114

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  • DOI: https://doi.org/10.1134/S0036024420110114

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