Abstract
Equilibrium potentials of antimony in the KCl–PbCl2–SbCl3 melt are measured by the EMF method as a function of the temperature and the content of antinomy chloride. Empirical equations of isotherms and polytherms of equilibrium potentials of antimony are obtained. The arbitrary standard potentials of antimony in the molten mixture of potassium and lead chlorides are calculated. The changes in the Gibbs energy at the formation of antimony trichloride from elements in the melt under study are calculated. The separation factors of metals from alloys are assessed. These results suggest that the processes of separation of lead and antimony in chloride melts hold much promise.
Similar content being viewed by others
REFERENCES
Borisoglebskii, Yu.V., Galevskii, G.V., Mintsis, M.Ya., and Sirazutdinov, G.A., Metallurgiya alyuminiya (Metallurgy of Aluminum), Novosibirsk: Nauka, Sibirian Branch of RAS, 1999.
Zaikov, Yu.P., Shurov, N.I., and Suzdal’tsev, A.V., Vysokotemperaturnaya elektrokhimiya kal’tsiya, Ekaterinburg: RIO UrO RAN, 2013.
Boyd, S. and Taylor, C., Chemical fundamentals and applications of molten salts, In: Molten Salt Reactors and Thorium Energy, Dolan, T.J., Ed., Amsterdam: Elsevier, 2017, p. 29. https://doi.org/10.1016/B978-0-08-101126-3.00003-8
Omel’chuk, A.A., Electrorefining of heavy nonferrous metals in molten electrolytes, Russ. J. Electrochem., 2010, vol. 46, p. 680.
Omel’chuk, A.A., Thin-layered electrolysis in molten electrolytes, Russ. J. Electrochem., 2007, vol. 43, p. 1060.
Arkhipov, P., Zaykov, Yu., Khalimullina, Yu., and Kholkina, A., Electrolytic refining of lead molten chloride electrolytes, Int. J. Technol., 2017, vol. 8, p. 572.
Arkhipov, P.A., Zaikov, Yu.P., and Khalimullina, Yu.R., RF Patent 2522920, 2014.
Delimarskii, Yu.K. and Markov, B.F. Elektrokhimiya rasplavlennykh solei (Electrochemistry of Molten Salts), Moscow: Metallurgizdat, 1960.
Delimarskii, Yu.K. and Zarubitskiy, O.G., Elektroliticheskoe rafinirovanie tyazhelykh metallov v ionnykh rasplavakh (Electrolytic Refining of Heavy Metals in Ionic Melts), Moscow: Metallurgy, 1975.
Laitinen, H.A. and Lui, C.H., An electromotive force series in molten lithium chloride-potassium chloride eutectic, J. Am. Chem. Soc., 1958, vol. 80, p. 1015.
Baraboshkin, A.N., Elektrokristallizatsiya metallov iz rasplavlennykh solei (Electrocrystallization of Metals from Molten Salts), Moscow: Nauka, 1976.
Smirnov, M.V., Elektrodnye potentsialy v rasplavlennykh khloridakh (Electrode Potentials in Chloride Melts), Moscow: Nauka, 1973.
Rabinovich, V.A. and Khavin, Z.Ya., Kratkii khimicheskii spravochnik (Concise Handbook on Chemistry), Leningrad: Khimiya, 1977.
Zaikov, Yu.P., Arkhipov, P.A., Plekhanov, K.A., Ashikhin, V.V., and Khalimullina, Yu.R., Thermodynamic characteristics of the Pb–Sb alloys, Russ. J. Non-Ferrous Metals, 2007, vol. 48, p. 92.
Lebedev, V.A., Izbiratel’nost’ zhidkometallicheskikh elektrodov v rasplavlennykh galogenidakh (Selectivity of Liquid Metal Electrodes in Molten Halides), Chelyabinsk: Metallurgy, 1993.
Lantratov, M.F. and Alabyshev, A.F., Activity of lead chlorine in solutions with alkali and alkali-earth metal chlorides, Zh. Prikl. Khim., 1953, vol. 26, no. 3, p. 263.
Khlimullina, Yu. R., Zaikov, Yu. P., Arkhipov, P.A., Ashikhin, V.V., Skopov, G.V., Kholkina, A.S., and Molchanova, N.G., Equilbrium potentials of Pb‑Bi alloys in KCl–PbCl2 melt, Rasplavy, 2010, no. 5, p. 32.
ACKNOWLEDGMENTS
This study was partly carried out with the use of equipment of the Center of Collective Use “Composition of Substances” at the Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences and also of the joint laboratory of the Ural Federal University and the Institute of High-Temperature Electrochemistry “High Temperature Devices for Distributional Electrochemical Energetics”.
Author information
Authors and Affiliations
Corresponding authors
Ethics declarations
The authors declare the absence of conflict of interests.
Additional information
Translated by T. Safonova
Rights and permissions
About this article
Cite this article
Arkhipov, P.A., Kholkina, A.S., Zaikov, Y.P. et al. Electrode Potentials of Antimony in the Mixture of Potassium and Lead Chlorides. Russ J Electrochem 56, 82–86 (2020). https://doi.org/10.1134/S1023193520010024
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1023193520010024