【摘要】 采用循环伏安法和记时电流法研究800～860℃下TiO₂电极在CaCl₂熔盐中还原过程的反应机理及还原电极电势与温度的关系。TiO₂电极在CaCl₂熔盐中的循环伏安曲线、SEM和微区元素成分分析结果表明,可以通过电化学方法由TiO₂制取金属钛。对TiO₂电极在CaCl₂熔盐中的时间-电流曲线的计算表明,TiO₂的还原是逐级进行的,TiO₂先还原为TiO,TiO再还原为Ti。温度升高,两个还原步骤的还原电极电势都降低。更多还原

【Abstract】 Reaction mechanism of reduction TiO2 into Ti in molten CaCl2 salt, and the relationships of reduction potential with temperature are studied by Cyclic Voltammetry and Chronoamperometry in the range of 800℃-860℃ . The results of V- A curves, SEM and micro- area elemental analysis show that TiO2 can be reduced to Ti by molten salt electrolysis, and the reduction is conducted in two steps, firstly TiO2 is reduced to TiO, then TiO is reduced to Ti. The reduction potentials in both steps are decreased with the increase of the temperature.更多还原