REACTION MECHANISM OF DIRECT ELECTROCHEMICAL REDUCTION OF TITANIUM DIOXIDE IN MOLTEN CALCIUM CHLORIDE

摘要

The reaction mechanism of electrochemical reduction of TiO2 in molten CaCl2 was studied systematically by means of cyclic voltammetry, chronoamperometry and A.C impedance techniques in temperature range of 1073 K to 1133 K. The reduction reaction of TiO2 was found to be the two-step process: TiO2 is reduced to the intermediate product TiO, and then to pure Ti.