REGULARITIES OF THE FORMATION OF SELENIUM POWDERS WHEN POLARIZING COPPER ELECTRODES BY AN INDUSTRIAL ALTERNATING CURRENT VARIABLE IN SELENIUM IONS CONTAINED HYDROCHLORIC COPPER (II) SOLUTION

Abstract

The laws of the formation of selenium powders investigated for the first time by the polarization of industrial alternating current of copper electrodes in selenium (IV) - ions contained copper (II) hydrochloric acid solution. It is shown for the first time that selenium powders are formed on the copper electrodes which polarized by industrial alternating current. It was shown that powders are formed both on the surface of the electrodes and in the space of the electrolyte. It was established that during electrolysis in hydrochloric acid, black colored copper selenide and red colored amorphous selenium are formed on the surface of copper plates, while only red amorphous selenium powders are formed in the electrolyte volume. During polarization of copper electrodes by alternating current, copper (I) ions are formed in the anode half-period, and copper (II) ions are reduced to copper (I) in the cathode half-period and they reduced selenium (IV) ions in the solution volume by the chemical way, as a result of which obtained high current efficiency seleniumpowders. Also in this article presents the results of microscopic and x-ray phase analyzes of the obtained powders

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