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  1. No Access

    Article

    Synthesis of NASICON-Type Lithium Zirconium Phosphate

    The chemical transformations involved in the synthesis of the NASICON-type compound LiZr2(PO4)3 were studied by thermogravimetry and x-ray diffraction. The results demonstrate that, during heat treatment of a 3Zr...

    I. A. Stenina, Yu. A. Velikodnyi, V. A. Ketsko, A. B. Yaroslavtsev in Inorganic Materials (2004)

  2. No Access

    Article

    Complex phosphates with the NASICON structure (M x A2(PO4)3)

    Data on the synthesis and properties of NASICON complex phosphates M x A2(PO4)3 are summarized. The crystal chemistry and homology of these compounds are surveyed. The existence ...

    A. B. Yaroslavtsev, I. A. Stenina in Russian Journal of Inorganic Chemistry (2006)

  3. No Access

    Article

    Ion transport in MF-4SK cation-exchange membranes modified with acid zirconium phosphate

    An MF-4SK cation-exchange membrane has been modified to obtain composite materials containing acid zirconium phosphate particles. It is demonstrated by electron microscopy and X-ray diffraction that acid zirco...

    A. S. Shalimov, S. A. Novikova, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2006)

  4. No Access

    Article

    Silver magnesium molybdate and silver cobalt molybdate: Synthesis and ionic conductivity

    Impedance spectroscopy, X-ray powder diffraction, and electron microscopy are used to study silver magnesium and silver cobalt molybdates of composition Ag2A 2 II ...

    A. A. Il’ina, I. A. Stenina, G. V. Lysanova… in Russian Journal of Inorganic Chemistry (2006)

  5. No Access

    Article

    Proton conduction in indium hydrogensulfate and hydrous zirconia composites

    Solid composite proton electrolytes based on indium hydrogensulfate and hydrous zirconia are studied. A composite effect is observed in these systems: their proton conductivity is higher than in the starting c...

    E. Yu. Voropaeva, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2007)

  6. No Access

    Article

    Potassium magnesium and potassium cobalt molybdates: Synthesis and ion conductivity

    Potassium magnesium and potassium cobalt molybdates of composition K2M 2 II (MoO4)3 (M = Mg, Co) and the products of their heterovalent do** by scandium(III)...

    A. A. Il’ina, I. A. Stenina, A. G. Veresov… in Russian Journal of Inorganic Chemistry (2007)

  7. No Access

    Article

    Phase transitions in double molybdates K2M 2 II (MoO4)3 with M = Mg or Co

    Phase transitions and cation mobility in double molybdates K2M 2 II (MoO4)3 with M = Mg or Co and the products of their heterovalent do** with scandium(III) a...

    A. A. Il’ina, I. A. Stenina, E. P. Kharitonova… in Russian Journal of Inorganic Chemistry (2007)

  8. No Access

    Article

    Ionic conduction in a grafted layer of organosilicate materials based on the mesostructured silicates MCM-41 and SBA-15

    Mesostructured silicate materials with different pore sizes and grafted sulfonic groups have been synthesized and characterized by thermal analysis, IR spectroscopy, and impedance spectroscopy. The results ind...

    I. A. Stenina, I. V. Ponomarenko, A. G. Veresov, S. D. Kirik… in Inorganic Materials (2007)

  9. No Access

    Article

    Kinetics of H+/Na+ Ion Exchange on H1 ± xZr2 − xMx(PO4)3 (M = Y or Nb) NASICON Materials

    The thermodynamic parameters of ion exchange have been estimated for HZr2(PO4)3 · H2O and the products of its aliovalent do**. Ion exchange occurs via formation of the (H3O1 − xNax)Zr2(PO4)3 solid-solution seri...

    I. Yu. Pinus, I. A. Stenina, A. G. Veresov… in Russian Journal of Inorganic Chemistry (2008)

  10. No Access

    Article

    Effect of Precipitation pH and Heat Treatment on the Properties of Hydrous Zirconium Dioxide

    The effect of the precipitation pH and subsequent heat treatment is studied on the properties of hydrous zirconium dioxide precipitated by ammonia from nitrate solutions. Precipitation at pH ≤ 6 generates hydr...

    I. A. Stenina, E. Yu. Voropaeva, A. G. Veresov… in Russian Journal of Inorganic Chemistry (2008)

  11. No Access

    Article

    Kinetics of H+/Na+ solid-phase ion exchange on iron(III) hydrogen sulfate

    The kinetics of solid-phase reaction between iron(III) hydrogen sulfate and sodium chloride was studied by thermal analysis followed by analysis of leaving gases. The exchange kinetics are described by the sof...

    Yu. A. Karavanova, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2008)

  12. No Access

    Article

    Heat-treatment induced evolution of the morphology and microstructure of zirconia prepared from chloride solutions during

    The properties of hydrous zirconia prepared from ZrOCl2 solutions were studied as functions of precipitation pH and subsequent heat treatment. Precipitation at pH ≤ 6 yields hydrous zirconia containing excess sor...

    I. A. Stenina, E. Yu. Voropaeva, T. R. Brueva… in Russian Journal of Inorganic Chemistry (2008)

  13. No Access

    Article

    Transport properties of hydrous-silica-modified MF-4SK membranes

    Composites are manufactured on the basis of MF-4SK perfluorinated cation-exchange membranes modified with hydrous silica nanoparticles 2–5 nm in size. Modification improves the ionic conductivity and diffusion...

    E. Yu. Voropaeva, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2008)

  14. No Access

    Article

    Transport properties of MF-4SK membranes modified with inorganic dopants

    Proton transport in MF-4SK perfluorinated sulfo cationic membranes modified by silica and zirconium hydrogen phosphate were studied using pulsed-field gradient NMR and impedance spectroscopy. At high water con...

    E. Yu. Voropaeva, E. A. Sanginov, V. I. Volkov… in Russian Journal of Inorganic Chemistry (2008)

  15. No Access

    Article

    Cation mobility in systems based on high-molecular-weight sulfonic acids and polyaniline

    Conduction properties and intermolecular interactions in systems based on high-molecular-weight sulfonic acids (poly(4-styrenesulfonic), poly(2-acrylamidomethylpropane-sulfonic), and perfluorosulfonic (MF-4SC)...

    I. A. Stenina, A. A. Il’ina, I. Yu. Pinus, V. G. Sergeev… in Russian Chemical Bulletin (2008)

  16. No Access

    Article

    Ion transport in MF-4SK membranes modified with hydrous zirconia

    Composites based on perfluorinated cation-exchange membranes MF-4SK with embedded hydrous zirconia were synthesized. The composites have higher proton conductivity, lower diffusion permeability, and higher ion...

    E. Yu. Voropaeva, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2008)

  17. No Access

    Article

    Cationic mobility in Li3−2x Nb x Fe2−x (PO4)3 complex phosphates

    Synthesis and ionic conductivity of Li3−2x Nb x Fe2−x (PO4)3 complex phosphates were studied by X-ray powder diffraction and imped...

    A. R. Shaikhlislamova, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2008)

  18. No Access

    Article

    Ion transport in MF-4SK membranes modified with hydrous zirconium hydrogen phosphate

    Composites based on perfluorinated cation-exchange membranes MF-4SK with embedded zirconium hydrogen phosphate were synthesized using various precursors. Physicochemical interfacial interactions were discovere...

    A. S. Shalimov, A. I. Perepelkina, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2009)

  19. No Access

    Article

    Synthesis and ionic conductivity of silver magnesium zirconium molybdates

    The silver magnesium zirconium molybdate Ag4Mg2Zr(MoO4), undoped and aliovalently doped with yttrium and aluminum, has been characterized by impedance spectroscopy, X-ray diffraction, and IR spectroscopy. The mat...

    A. A. Il’ina, I. A. Stenina, G. V. Lysanova, A. B. Yaroslavtsev in Inorganic Materials (2009)

  20. No Access

    Article

    Phase transformations and cation mobility in Li3 − 2x Nb x In2 − x (PO4)3 complex phosphates

    Cation mobility in Li3 − 2x Nb x In2 − x (PO4)3 complex phosphates was studied by impedance spectroscopy, calorimetry, and 7Li NMR...

    A. R. Shaikhlislamova, I. A. Stenina… in Russian Journal of Inorganic Chemistry (2009)

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