NaCl-KCl-Na<sub>2</sub>WO<sub>4</sub>共融体系的方波伏安法分析

NaCl-KCl-Na₂WO₄共融体系的方波伏安法分析

摘要: 采用三电极体系，应用方波伏安法分析NaCl-KCl-Na₂WO₄共融体系的电化学特性，重点研究了钨（Ⅵ）离子的电化学行为，结果表明：W（Ⅵ）→W（Ⅳ）还原过程的特征峰与W（Ⅳ）→W的特征峰发生相互重叠，W（Ⅵ）离子的还原过程分2步，即：W（Ⅵ）→W（Ⅳ）→W，其中第1步W（Ⅵ）→W（Ⅳ）过程可逆，第2步W（Ⅳ）→W过程不可逆.

Abstract: Characteristics of NaCl -KCl -Na2WO4 communion system was analyzed by three -electrode system and square wave voltammetry, focusing on the electrochemical behavior of the tungsten ion (VI). The results show that the characteristic peak of reduction process of W (Ⅵ)→W (Ⅳ) and W (Ⅳ)→W is overlapping, and the reduction process of tungsten ion (VI) is divided into two steps, that is W (Ⅵ)→W (Ⅳ)→W, of which the first step is reversible, while the second step, W (IV)→W, is irreversible.