ЭЛЕКТРОХИМИЧЕСКИЕ ИССЛЕДОВАНИЯ РЕДОКС-ПРОЦЕССОВ В ЖЕЛЕЗОСОДЕРЖАЩИХ ВОДНЫХ РАСТВОРАХ

Ольга КОВАЛЕВА Научно-исследовательский центр прикладной и экологической химии

Abstract

The results are presented of polarization studies conducted in the conditions of mechanical renovation of Pt and graphite microelectrodes’ surface by cutting the thin layer directly in the studied solutions. The research carried out in the broad potentials area made it possible to establish the potentials corresponding to the running of electrode reactions Fe(III)eFe(II), Fe(II) 2eFe0 and 2Н+ + 2е →Н2. It was shown that the fi rst of these reactions which ensures the iron-coating electrolytes regeneration, proceeds within the potential range of about ~ 1 V, with the current yield close to 100 %. This enables to prevent the discharges of used iron electrolytes, providing instead the electrochemical regeneration of their composition and stable operation conditions, in order to obtain the good quality iron coatings.