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  1. No Access

    Article

    Features of Copper(II) Oxide Synthesis in Combustion Reactions with Glycine and Citric Acid

    Effect of citric acid (φ = 0.5–1.3) and glycine (φ = 0.5; 0.7–0.9) ratio on the rate of combustion reactions, phase composition, and particle size of CuOx powder obtained from copper nitrate solution under condit...

    V. D. Zhuravlev, L. V. Ermakova… in Russian Journal of Inorganic Chemistry (2022)

  2. No Access

    Article

    LiAlO2 Prepared by Nitrates-Free Synthesis for Carbon Capture by MCFCs

    Pure crystalline phase of alpha lithium aluminate, a state-of-the-art matrix support material, was directly prepared by two nitrates-free methods at 650°C. The sol-gel method included pyrolysis of a colloidal ...

    A. S. Tolkacheva, N. M. Porotnikova… in Refractories and Industrial Ceramics (2021)

  3. No Access

    Article

    Applicability of gas-phase isotope exchange method for investigation of porous materials

    Oxygen transport in ceramic oxide materials has been actively explored over the past decades. This is due to the desire to design high-temperature electrochemical devices for energy conversion. The research of...

    N. M. Porotnikova, M. V. Ananyev in Journal of Solid State Electrochemistry (2021)

  4. No Access

    Article

    Carbothermal Synthesis, Properties, and Structure of Ultrafine SiC Fibers

    This paper briefly reports the results of the carbothermal synthesis of SiC from natural graphite and quartz in a reactor with a self-organizing protective CO–SiO atmosphere and in argon at a temperature betwe...

    A. S. Lebedev, A. V. Suzdal’tsev, V. N. Anfilogov, A. S. Farlenkov… in Inorganic Materials (2020)

  5. No Access

    Article

    Solution Combustion Synthesis of ZnO Using Binary Fuel (Glycine + Citric Acid)

    Solution combustion synthesis (SCS) of zinc oxide was performed using a binary fuel, glycine and citric acid. It was established that combustion occurs due to oxidation of zinc nitrate–glycine complexes. Citri...

    Sh. M. Khaliullin, V. D. Zhuravlev… in International Journal of Self-Propagating … (2019)

  6. No Access

    Article

    Alumina–silica glass–ceramic sealants for tubular solid oxide fuel cells

    In this work, we synthesized the glasses of the SiO2–Al2O3–CaO–Na2O–MgO–K2O–B2O3–Y2O3 system and investigated their thermal properties under changes in the ratios between the components in both modifying (MgO/CaO...

    N. S. Saetova, D. A. Krainova, A. V. Kuzmin… in Journal of Materials Science (2019)

  7. No Access

    Article

    Oxygen isotope exchange in praseodymium nickelate

    Oxygen surface exchange kinetics and diffusion were studied in Pr2NiO4 + δ (PNO) by the isotope exchange method with gas phase equilibration in the temperature range of 600–800 °C and oxygen pressure range of 0.3...

    N. M. Porotnikova, A. V. Khodimchuk… in Journal of Solid State Electrochemistry (2018)

  8. No Access

    Article

    Oxygen isotope exchange between the gas-phase and the electrochemical cell O2, Pt | YSZ | Pt, O2 under conditions of applied potential difference

    The kinetics of oxygen isotope exchange between gas-phase oxygen and the electrochemical cell O2, Pt | ZrO2 + 10 mol % Y2O3 (YSZ) | Pt, O2 with applied potential difference (ΔU = ±1.2 V) is studied in the tempera...

    A. V. Khodimchuk, M. V. Anan’ev, V. A. Eremin… in Russian Journal of Electrochemistry (2017)

  9. No Access

    Article

    Phase equilibria, water dissolution, and peculiarities of charge transfer in Ca-doped La2Zr2O7–α

    A series of oxides La2 - x Ca x Zr2O7–α (x = 0.00, 0.05, 0.10, 0.15, 0.20) is synthesized. It is found that in samples with the calcium content x ...

    E. P. Antonova, M. V. Ananyev, A. S. Farlenkov… in Russian Journal of Electrochemistry (2017)

  10. No Access

    Article

    Effect of acceptor substitution in perovskites La1–x A x MnO3 ± δ (A = Ca, Sr, Ba) on the kinetics of interaction of gas-phase oxygen

    The kinetics of interaction of gas-phase oxygen with oxygen of perovskite-like manganites La1 - x A x MnO3 ± δ (A = Ca, Sr, Ba) at a temperature o...

    N. M. Porotnikova, M. V. Ananyev, V. A. Eremin… in Russian Journal of Electrochemistry (2016)

  11. No Access

    Article

    Oxygen isotope exchange and electrical conductivity of CaZr1–x Sc x O3–x/2

    The effect of scandium content in CaZr1–x Sc x O3–x/2 on electrical conductivity and oxygen exchange kinetics was investigated. The electrical conductivit...

    E. P. Antonova, M. V. Ananyev, N. M. Porotnikova… in Journal of Solid State Electrochemistry (2016)

  12. No Access

    Article

    Determination of the surface of dendritic electrolytic zinc powders and evaluation of its fractal dimension

    The area of dendritic deposits of zinc deposits prepared by electrolysis from zincate electrolyte, which contained 0.3 mol/dm3 ZnO and 4 mol/dm3 NaOH, is determined. The application of electrochemical methods has...

    T. N. Ostanina, V. M. Rudoi, V. S. Nikitin… in Russian Journal of Non-Ferrous Metals (2016)

  13. No Access

    Article

    Specific features of preparation of dense ceramic based on barium zirconate

    In the present work the BaZr0.8Y0.2O3 − δ samples were synthesized by traditional ceramic (solid-state method), citrate-nitrate methods as well as co-precipitation of hydroxides. Among them, the citrate-nitrate c...

    Yu. G. Lyagaeva, D. A. Medvedev, A. K. Demin, T. V. Yaroslavtseva… in Semiconductors (2014)

  14. No Access

    Article

    Oxygen isotope exchange in the LSM-YSZ composite under the conditions of long-term tests

    The stability of the properties of the composite 40 vol % La0.6Sr0.4MnO3 − δ-60 vol % Zr0.83Y0.17O1.92 (LSM-YSZ) held for 1000 h at a temperature of 800°C and an oxygen pressure of 1.01 kPa and changes in its mic...

    N. M. Porotnikova, M. V. Ananyev, V. A. Eremin… in Russian Journal of Electrochemistry (2014)

  15. No Access

    Article

    Effect of defect structure of lanthanum manganite on oxygen exchange kinetics and diffusion

    The method of oxygen isotopic exchange was used to study the oxygen exchange kinetics and diffusion in the LaMnO3 + δ oxide at the temperatures of 600–850°C and in the range of oxygen pressures of 133.3–9332.4 Pa...

    N. M. Porotnikova, M. V. Anan’ev, E. Kh. Kurumchin in Russian Journal of Electrochemistry (2011)

  16. No Access

    Article

    Catalase activity of coarse-grained and nanosized oxide tungsten bronzes obtained by electrolysis of molten salts

    Nanocrystalline samples of K x Li y WO3 with hexagonal structure obtained by electrodeposition of molten salts were several times more active in...

    S. V. Vakarin, A. A. Melyaeva, O. L. Semerikova… in Russian Chemical Bulletin (2011)

  17. No Access

    Article

    Options for adjustment of microstructure and conductivity of cathodic substrates of La(Sr)MnO3

    The electrodes of solid-oxide fuel cells (SOFCs) must be characterized by high conductivity to decrease ohmic losses and sufficient porosity to provide high gas diffusion rate. In the cases, when the SOFC elec...

    A. A. Kurteeva, N. M. Bogdanovich, D. I. Bronin… in Russian Journal of Electrochemistry (2010)

  18. No Access

    Article

    Effect of oxygen nonstoichiometry on kinetics of oxygen exchange and diffusion in lanthanum-strontium cobaltites

    The method of isotopic exchange was used to study the kinetics of oxygen exchange and diffusion in complex oxides of La1 − x Sr x Co1 − y ...

    M. V. Ananyev, E. Kh. Kurumchin, N. M. Porotnikova in Russian Journal of Electrochemistry (2010)