2019 Volume 60 Issue 3 Pages 400-404
Perovskite is an inevitable phase formed in the cathode during electrolytic deoxidation using titanium dioxide as the raw material by FFC process. Here, titanium suboxides (Ti3O5, Ti2O3 and TiO) are used as the raw materials to study whether perovskite can be avoided in the process. The results show that there is not perovskite formed during electrolysis using TiO and perovskite is appeared in the cathode when Ti3O5 and Ti2O3 are used as the raw materials. Perovskite is formed by combining Ca2+ in the molten CaCl2 with the cathode materials after the voltage is applied between the electrodes. Perovskite is mainly produced by electrochemical deoxidation process and amount of it gradually decreases with oxygen content decreasing in the cathode.