DEVELOPMENT OF ELECTROCHEMICAL METHODS FOR PRODUCTION OF PURE THALLIUM

Authors

  • Yenlik Zh. USSIPBEKOVA Al-Farabi Kazakh National University, Faculty of Chemstry and Chemical Technology, 71 Al-Farabi av., 050040 Almaty, Kazakhstan https://orcid.org/0000-0001-8367-1800
  • Gulziya A. SEILKHANOVA Al-Farabi Kazakh National University, Faculty of Chemstry and Chemical Technology, 71 Al-Farabi av., 050040 Almaty, Kazakhstan. *Corresponding author: g_seilkhanova@mail.ru https://orcid.org/0000-0002-9939-8316
  • Andrey V. BEREZOVSKIY Al-Farabi Kazakh National University, Faculty of Chemstry and Chemical Technology, 71 Al-Farabi av., 050040 Almaty, Kazakhstan
  • Andrey P. KURBATOV Al-Farabi Kazakh National University, Faculty of Chemstry and Chemical Technology, 71 Al-Farabi av., 050040 Almaty, Kazakhstan https://orcid.org/0000-0003-1883-310X
  • Michael K. NAURYZBAEV Al-Farabi Kazakh National University, Faculty of Chemstry and Chemical Technology, 71 Al-Farabi av., 050040 Almaty, Kazakhstan

DOI:

https://doi.org/10.24193/subbchem.2021.1.01

Keywords:

thallium, glassy carbon, discharge ionization, refining, thallium oxide, reduction, polarity reversal, electrolysis.

Abstract

In this work, the electrochemical studies were carried out to improve the purity of rough thallium. The results were obtained by the rough thallium refining through the anodic deposition of thallium oxide (Tl2O3), followed by its reduction to Tl+ by hydroxylamine and repeated electrolysis. At the same time, platinum anode material was replaced with glassy carbon material to reduce economic costs in production. It was found that the addition of ammonium thiocyanate after the dissolution of thallium oxide(III) in nitric acid promotes the inhibition of re-formation of thallium oxide at the anode, as well as more complete oxidation of trivalent thallium to a monovalent state. The thallium obtained in this way is characterized by a purity of 99.96%. Based on the obtained experimental data the principal schemes for obtaining pure thallium are proposed.

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Published

2021-03-30

How to Cite

USSIPBEKOVA, Y. Z., SEILKHANOVA, G. A., BEREZOVSKIY, A. V., KURBATOV, A. P., & NAURYZBAEV, M. K. (2021). DEVELOPMENT OF ELECTROCHEMICAL METHODS FOR PRODUCTION OF PURE THALLIUM. Studia Universitatis Babeș-Bolyai Chemia, 66(1), 9–21. https://doi.org/10.24193/subbchem.2021.1.01

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