2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 3. Fehrmann Intl. Symp. / Molten Salt and Ionic Liquid

Editors:F. Kongoli, M. Haumann, P. Wasserscheid, T. Welton, M. Gaune-Escard, A. Angell, A. Riisager
Publisher:Flogen Star OUTREACH
Publication Year:2018
Pages:154 pages
ISBN:978-1-987820-86-7
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
CD-SIPS2018_Volume1
CD shopping page

    Electrochemical Behaviour of Molybdenum Oxide and its Compounds in Carbamide Melts

    Sergei Devyatkin1; Svetlana Kochetova2;
    1INSTITUTE OF GENERAL AND INORGANIC CHEMISTRY, Kiev, Ukraine; 2V.I. VERNADSKY INSTITUTE OF GENERAL AND INORGANIC CHEMISTRY OF THE NATIONAL ACADEMY OF SCIENCES OF UKRAINE, Kyiv, Ukraine;
    Type of Paper: Regular
    Id Paper: 18
    Topic: 13

    Abstract:

    Carbamide melts have found applications as electrolytes for electrochemical treatment of metals [1]. The possibility of electrodeposition of refractory metals from carbamide melts at 1350°С has been examined for molybdenum as an example. When studying the electrochemical behaviour of molybdenum oxide and its compounds (MoO<sub>3</sub>, Li<sub>2</sub>MoO<sub>4</sub>, Na<sub>2</sub>MoO<sub>4</sub>, K<sub>2</sub>MoO<sub>4</sub> or CaMoO<sub>4</sub>) in molten carbamide, it can be concluded that maximum limiting currents are typical of the system (NH<sub>2</sub>)2CO-Na<sub>2</sub>MoO<sub>4</sub>. Micron Mo coatings on nickel cathodes and metallic Mo powder have been obtained by the electrolysis of the molten system (NH<sub>2</sub>)<sub>2</sub>CO-Na<sub>2</sub>MoO at current densities of 10-20 mA/cm<sup>2</sup>.

    Keywords:

    Electrochemical; Molten salt; Molybdenum;

    References:

    [1] Klochko M.A., Strelnikov A.A. 1960. Study of electrical conductivity and viscosity in the
    system ammonium nitrate – urea. In: Russian Journal of Inorganic Chemistry. Volume
    10. p. 2483-2490.
    [2] Tumanova N.Kh., Devyatkin C.V. Boiko O.I. 2004. Refractory metals electrochemistry
    in ion and ion–organic melts. In: Ukrainian Chemical Journal. Volume 7/8. p. 78-84.

    Full Text:

    Click here to access the Full Text

    Cite this article as:

    Devyatkin S and Kochetova S. (2018). Electrochemical Behaviour of Molybdenum Oxide and its Compounds in Carbamide Melts. In F. Kongoli, M. Haumann, P. Wasserscheid, T. Welton, M. Gaune-Escard, A. Angell, A. Riisager (Eds.), Sustainable Industrial Processing Summit SIPS2018 Volume 3. Fehrmann Intl. Symp. / Molten Salt and Ionic Liquid (pp. 135-138). Montreal, Canada: FLOGEN Star Outreach