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  1. No Access

    Article

    Preparation of Polymetal Powder Systems Fe–Ni–Co–Al in Aqueous Solutions and Their Physical Characteristics

    The possibility of preparation of a polymetallic dispersed Fe–Ni–Co–Al system in aqueous solutions by a redox process between iron(III), nickel(II), cobalt(II) ions and aluminum microparticles in aqueous solut...

    A. F. Dresvyannikov, M. E. Kolpakov… in Russian Journal of Physical Chemistry A (2023)

  2. No Access

    Article

    Formation of a Heterogeneous Mixture of Metals during the Reduction of Ni(II) Ions on Titanium in Aqueous Solutions

    A bimetallic Ni–Ti system is obtained in an aqueous halide-containing solution via the reduction of Ni(II) ions on particles of metallic titanium. Electrochemical measurements show the process can be subdivide...

    A. F. Dresvyannikov, M. E. Kolpakov… in Russian Journal of Physical Chemistry A (2022)

  3. No Access

    Article

    Specific Features of the Formation of the Disperse Polymetallic System Fe–Al–Mo–W in Aqueous Solutions

    The coreduction of Fe(III), MoO\(_{4}^{{2 - }}\), and WO\(_{4}^{{2 - }}\) ions in chloride-containing aqueous solutions in the presence of 2-hydroxypropane-1,2,3-tricarboxylic acid on disperse aluminum suspended ...

    A. F. Dresvyannikov, M. E. Kolpakov… in Russian Journal of Physical Chemistry A (2020)

  4. No Access

    Article

    Deposition of Iron on the Surface of Titanium Microparticles

    An Fe–Ti bimetallic system has been prepared by reducing Fe(III) ions on metallic titanium particles in an aqueous solution. Scanning electron microscopy and Auger electron spectroscopy have been used to exami...

    A. F. Dresvyannikov, M. E. Kolpakov, E. A. Ermolaeva in Inorganic Materials (2020)

  5. No Access

    Article

    Preparation of a disperse Fe–Al–Mo system and production of bulk materials on its base

    We show the feasibility to prepare a disperse Fe–Al–Mo polymetal system by contact exchange in chloride-containing aqueous solutions. Reaction schemes are suggested to describe the processes that proceed on al...

    A. F. Dresvyannikov, M. E. Kolpakov… in Russian Journal of Inorganic Chemistry (2017)

  6. No Access

    Article

    Improvement of synthesis conditions of dispersed polymetallic Fe–Al–Mo systems in aqueous solutions

    Kinetic dependences describing the processes occurring on aluminum microparticles in aqueous solutions containing iron and molybdenum ions were determined. It was shown that the samples obtained contain iron, ...

    A. F. Dresvyannikov, M. E. Kolpakov… in Russian Journal of Applied Chemistry (2016)

  7. No Access

    Article

    Formation of the Fe—Cr—Al Polymetallic Systems with Developed Surface in Solutions

    The possibility of obtaining dispersed Fe—Cr—Al polymetallic systems by the method of contact exchange in chloride-containing aqueous solutions is determined. It is shown that the obtained systems have a branc...

    A. F. Dresvyannikov, M. E. Kolpakov… in Protection of Metals and Physical Chemistr… (2016)

  8. No Access

    Article

    Formation of a disperse Fe–Al–Cr system in aqueous solutions and its physical properties

    We have demonstrated the feasibility of producing a disperse Fe–Al–Cr polymetallic system through a contact exchange in chloride-containing aqueous solutions and investigated the processes that take place on a...

    A. F. Dresvyannikov, M. E. Kolpakov, E. A. Ermolaeva in Inorganic Materials (2016)

  9. No Access

    Article

    Optical properties of the surface transition-metal structures in fluoride ionic crystals and peculiarities of their formation during thermal diffusion

    The possibility of forming surface films with an elevated concentration of an impurity metal during high-temperature diffusion has been analyzed for a wide series of ionic crystals: LiF with Co, Ni, Mg, Ca, Ba...

    L. I. Bryukvina, S. N. Pidgurskiĭ, E. A. Ermolaeva in Optics and Spectroscopy (2008)

  10. No Access

    Article

    High-performance liquid chromatography of 5,7-dinitrobenzofurazan and nitrobenzodifurazan derivatives of aromatic amines

    The retention times of 5,7-dinitrobenzofurazan and nitrobenzodifurazan derivatives of aromatic amines in reversed-phase high-performance liquid chromatography on a column filled with Hypersil ODS correlate wit...

    M. I. Evgen’ev, I. I. Evgen’eva, F. S. Levinson… in Journal of Analytical Chemistry (2006)

  11. No Access

    Article

    Metallic films forming on the surface of alkali-halide crystals during thermal diffusion of intracrystalline immpurities

    It was detected for the first time that films consisting of a transition-metal-based structure form (via thermal diffusion of intracrystalline impurities) on the surface of alkali-halide (LiF, NaF) crystals ac...

    L. I. Bryukvina, E. A. Ermolaeva, S. N. Pidgurskiĭ… in Physics of the Solid State (2006)

  12. No Access

    Article

    Evaluation of the Effect of the Furazane Fragment on the NH Acidity of 4- and 5-Picrylaminobenzofurazanes in DMF and DMSO

    The products of the reactions of picryl chloride with isomeric aminobenzofurazanes in DMF and DMSO were studied by means of nonaquoeus potentiometric titration. The effect of the position of the furazane fragm...

    F. S. Levinson, S. A. Akimova, E. A. Ermolaeva… in Russian Journal of General Chemistry (2005)

  13. No Access

    Article

    Synthesis and Biological Activity of Arylaminosubstituted Nitrobenzodifurazans

    F. S. Levinson, M. I. Evgen'ev, E. A. Ermolaeva… in Pharmaceutical Chemistry Journal (2003)

  14. No Access

    Article

    Synthesis and Biological Activity of Substituted Benzodifurazans

    F. S. Levinson, M. I. Evgen'ev, E. A. Ermolaeva… in Pharmaceutical Chemistry Journal (2003)

  15. No Access

    Article

    Coloured polycaproamides and fibres based on them

    A. N. Bykov, L. N. Mizerovskii, E. A. Ermolaeva in Fibre Chemistry (1969)