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  1. No Access

    Article

    Activation of Nickel Oxide Catalysts Modified with Cobalt, Cerium, Manganese, and Zirconium

    The activation of a series of catalysts with the general formula Ni0.9M0.1O (M = Co, Ce, Mn, and Zr) synthesized by coprecipitation and the effect of modifying additives on the phase composition and structure of ...

    M. D. Mikhnenko, T. N. Afonasenko, V. A. Rogov, O. A. Bulavchenko in Kinetics and Catalysis (2023)

  2. No Access

    Article

    Effect of Calcination Temperature on the Properties of Mn–Zr–Ce Catalysts in the Oxidation of Carbon Monoxide

    The effect of the calcination temperature of MnOх–ZrO2–CeO2 catalysts on their structural properties and activity in the reaction of CO oxidation has been studied. Triple oxide systems with the cation ratio Mn : ...

    T. N. Afonasenko, D. V. Glyzdova, V. P. Konovalova, A. A. Saraev… in Kinetics and Catalysis (2022)

  3. No Access

    Article

    OPERANDO X-RAY DIFFRACTION ANALYSIS OF THE MnOx–ZrO2 CATALYST DURING OXIDATION OF PROPANE

    A series of MnOx–ZrO2 catalysts is prepared by coprecipitation with variation of the calcinationtemperature from 400 °C to 800 °C. It is shown that the catalyst calcined at 650-700 °C exhibits the highest activit...

    O. A. Bulavchenko, Z. S. Vinokurov, V. P. Konovalova… in Journal of Structural Chemistry (2022)

  4. No Access

    Article

    STUDY OF THERMAL CO-DECOMPOSITION OF MANGANESE AND CERIUM OXALATES IN AIR AND IN INERT MEDIA

    Controlled thermal decomposition of oxalate salts is a promising method for the preparation of highly dispersed materials. In this work, co-decomposition of Mn and Ce salts is studied upon variations of the ca...

    O. A. Bulavchenko, Z. S. Vinokurov, O. A. Nikolaeva… in Journal of Structural Chemistry (2021)

  5. No Access

    Article

    The Structure of Mixed Mn–Co Oxide Catalysts for CO Oxidation

    A series of Mn5Co1Ox catalysts calcined at different temperatures in the range of 400–800 °C were synthesized by coprecipitation of manganese and cobalt nitrates and tested in the oxidation of CO. The specific su...

    O. A. Bulavchenko, T. N. Afonasenko, S. S. Sigaeva… in Topics in Catalysis (2020)

  6. No Access

    Article

    Acetylene Hydrogenation to Ethylene in a Hydrogen-Rich Gaseous Mixture on a Pd/Sibunit Catalyst

    The reaction of the gas-phase hydrogenation of acetylene on a Pd/Sibunit catalyst was studied depending on the H2 : C2H2 molar ratio, the process temperature, and the presence of carbon monoxide. It was shown tha...

    D. A. Shlyapin, D. V. Glyzdova, T. N. Afonasenko, V. L. Temerev… in Kinetics and Catalysis (2019)

  7. No Access

    Article

    Phase Transformations in the Mn–Ga–O System Depending on the Preparation Conditions

    Manganese-gallium samples with cation ratios Mn:Ga = 1:2, 1.5:1.5, and 2:1 are synthesized by coprecipitation with subsequent annealing in air in a temperature range 600–1200 °C. Powder XRD, TEM, and BET metho...

    O. S. Venediktova, O. A. Bulavchenko, T. N. Afonasenko… in Journal of Structural Chemistry (2018)

  8. No Access

    Article

    High-Temperature X-Ray Diffraction Investigation of the Decomposition Process in Manganese-Gallium Spinel Mn1.5Ga1.5O4

    The stability of spinel-type mixed Mn1.5Ga1.5O4 oxide prepared in an inert medium (1000 °C, Ar) is studied by thermogravimetry and high-temperature X-ray diffraction in air in a wide temperature range 30–1000 °C....

    O. S. Venediktova, O. A. Bulavchenko, P. G. Tsyrulnikov… in Journal of Structural Chemistry (2018)

  9. No Access

    Article

    Effect of the Calcination Temperature and Composition of the MnOx–ZrO2 System on Its Structure and Catalytic Properties in a Reaction of Carbon Monoxide Oxidation

    The effect of the calcination temperature and composition of the MnOx–ZrO2 system on its structural characteristics and catalytic properties in the reaction of CO oxidation was studied. According to X-ray diffrac...

    T. N. Afonasenko, O. A. Bulavchenko, T. I. Gulyaeva… in Kinetics and Catalysis (2018)

  10. No Access

    Article

    Synthesis and properties of γ-Ga2O3–Al2O3 solid solutions

    The textural and structural properties of mixed oxides Ga2O3–Al2O3, obtained via impregnating γ-Al2O3 with a solution of Ga(NO3)3 and subsequent heat treatment, are studied. According to the results from X-ray po...

    T. N. Afonasenko, N. N. Leont’eva, V. P. Talzi… in Russian Journal of Physical Chemistry A (2017)

  11. No Access

    Article

    Pd/Ga2O3–Al2O3 catalysts for the selective liquid-phase hydrogenation of acetylene to ethylene

    The structure of Ga2O3–Al2O3 supports and Pd/Ga2O3–Al2O3 catalysts and the performance of these catalysts in liquid-phase acetylene hydrogenation have been investigated. The deposition of Ga(NO3)3 onto Al2O3 by i...

    T. N. Afonasenko, N. S. Smirnova, V. L. Temerev, N. N. Leont’eva… in Kinetics and Catalysis (2016)

  12. No Access

    Article

    Effect of the mechanical activation of a mixture of MnCO3 · mMn(OH)2 · nH2O and AlOOH as a stage of the preparation of a MnO x -Al2O3 catalyst on its phase composition and catalytic activity in CO oxidation

    The effect of the mechanical activation of a mixture of MnCO3 · mMn(OH)2 · nH2O and AlOOH as a stage in the preparation of a MnO x -Al2O3 catalyst on the characteristics of the r...

    T. N. Afonasenko, O. A. Bulavchenko, O. A. Knyazheva… in Kinetics and Catalysis (2015)

  13. No Access

    Article

    MnO x -Al2O3 catalysts for deep oxidation prepared with the use of mechanochemical activation: The effect of synthesis conditions on the phase composition and catalytic properties

    The catalytic activity of alumina-manganese catalysts in the oxidation of CO was studied. The MnO x -Al2O3 catalysts were prepared by an extrusion method with the introduction of...

    O. A. Bulavchenko, T. N. Afonasenko, P. G. Tsyrul’nikov… in Kinetics and Catalysis (2014)

  14. No Access

    Article

    (CuO-CeO2)/glass cloth catalysts for selective CO oxidation in the presence of H2: The effect of the nature of the fuel component used in their surface self-propagating high-temperature synthesis on their properties

    The potential of surface self-propagating high-temperature synthesis (SSHS) for obtaining (CuO-CeO2)/glass cloth catalysts is demonstrated. The dependence of the structural and catalytic properties of the catalys...

    T. N. Afonasenko, P. G. Tsyrul’nikov, T. I. Gulyaeva… in Kinetics and Catalysis (2013)

  15. No Access

    Article

    Selective oxidation of carbon monoxide in hydrogen-containing gas on CuO-CeO2/Al2O3 catalysts prepared by surface self-propagating thermal synthesis

    The CuO-CeO2/Al2O3 catalysts for the selective oxidation of CO in hydrogen-containing mixtures were prepared by surface self-propagating thermal synthesis (SSTS) with the use of cerium nitrate Ce(NO3)3, the ammon...

    T. N. Afonasenko, D. A. Shlyapin, N. N. Leont’eva, T. I. Gulyaeva… in Kinetics and Catalysis (2011)

  16. No Access

    Article

    Liquid-phase hydrogenation of acetylene on the Pd/sibunit catalyst in the presence of carbon monoxide

    The liquid-phase catalytic hydrogenation of acetylene into ethylene in the presence of CO over palladium supported on the graphite-like material Sibunit has been investigated. Carbon monoxide is an effective m...

    N. B. Shitova, D. A. Shlyapin, T. N. Afonasenko, E. N. Kudrya… in Kinetics and Catalysis (2011)

  17. No Access

    Article

    Chemical and structural transformations in manganese aluminum spinel of the composition Mn1.5Al1.5O4 during heating and cooling in air

    Single phase cubic spinel of the composition Mn1.5Al1.5O4 is synthesized. Its crystal structure refinement shows that 0.4Mn+0.6Al are in the octahedral sites and 0.7Mn+0.3Al are in the tetrahedral sites. High tem...

    O. A. Bulavchenko, S. V. Tsybulya, P. G. Tsyruls’nikov… in Journal of Structural Chemistry (2010)

  18. No Access

    Article

    High-temperature X-ray study of the formation and delamination of manganese-alumina spinel Mn1.5Al1.5O4

    The behavior of the manganese-alumina system with Mn:Al = 1:1 on heating in air and vacuum was studied. The starting samples were mixtures of β-Mn3O4, α-Mn2O3, and γ-Al2O3. On heating to 950°C in air, the samples...

    O. A. Bulavchenko, S. V. Tsybulya, S. V. Cherepanova… in Journal of Structural Chemistry (2009)

  19. No Access

    Article

    State of palladium in palladium-aluminosilicate catalysts as studied by XPS and the catalytic activity of the catalysts in the deep oxidation of methane

    Palladium catalysts based on Siralox and AS aluminosilicate supports for the deep oxidation of methane were studied. With the use of XRD analysis, it was found that they were heterophase systems consisting of ...

    P. G. Tsyrul’nikov, T. N. Afonasenko, S. V. Koshcheev… in Kinetics and Catalysis (2007)