LiF─NaF─K2TiF6熔盐中Ti（Ⅳ）的电化学还原

ELECTROCHEMICAL REDUCTION OF Ti(Ⅳ) IN MOLTEN LiF NaF K 2TiF 6

用循环伏安法和卷积技术研究了ＬｉＦ－ＮａＦ低共熔体中，以Ｋ２ＴｉＦ６形式加入的Ｔｉ（Ⅳ）在铂电极上阴极还原机理，计算了各还原步骤所传递的电子数。结果表明，Ｔｉ（Ⅳ）的电化学还原机理为耦联均相歧化反应的三步骤电荷传递反应。

The mechanism of the cathode reduction of Ti(Ⅳ) at platinum electrode in the LiF NaF eutectic containing various concentrations of K 2TiF 6 has been investigated by means of cyclic voltammetry and convolution technique and the transferred electron numbers of each reduction step are calculated. The results show that the electrochemical reduction of Ti(Ⅳ) proceeds in three step charge transfer with a disproportionation reaction coupled with the first charge transfer: Ti(Ⅳ)+eTi(Ⅲ)→12Ti(Ⅳ)+12Ti(Ⅱ) \ \ Ti(Ⅲ)+eTi(Ⅱ) Ti(Ⅱ)+2eTi(0)