Abstract

The standard rate constants of charge transfer for the Ti(IV)/Ti(III) redox couple in the KCl–KF(10 wt %)–K₂TiF₆ melt are determined by cyclic voltammetry. The activation energy of charge transfer is calculated. The influence of strongly polarizing cations Mg²⁺, Ca²⁺, Sr²⁺, and Ba²⁺ on the charge transfer kinetics in the Ti(IV)/Ti(III) redox couple when the cations are introduced into the initial melt is studied. A linear dependence of the rate constants of charge transfer on the ionic potentials of the alkaline earth metal cations is found.

中文翻译：

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碱土金属阳离子存在下KCl–KF–K 2 TiF 6熔体中Ti（IV）/ Ti（III）氧化还原对的电化学行为

摘要

通过循环伏安法测定KCl–KF（10 wt％）– K ₂ TiF ₆熔体中Ti（IV）/ Ti（III）氧化还原对的电荷转移的标准速率常数。计算电荷转移的活化能。当阳离子引入初始熔体中时，强极化阳离子Mg 2 ⁺，Ca 2 ⁺，Sr ²⁺和Ba ²⁺对Ti（IV）/ Ti（III）氧化还原对中电荷转移动力学的影响是研究。发现电荷转移的速率常数与碱土金属阳离子的离子电势成线性关系。