重铬酸钠电催化合成中阳极液在电极上的电化学研究

Electrochemical Study of Anolyte on Anode for Electro-catalysis Synthesis of Sodium Dichromate

报道了一种电催化合成重铬酸纳的绿色新技术.用循环伏安法研究了电催化合成过程阳极液铬酸钠溶液在电极上的电化学性能.确定了不同温度下电荷传递系数、扩散系数、电极反应速率常数,初步讨论了温度的影响.求得了电极反应活化能.表明了该电极具有很稳定的电化学性能,电极反应是主要受扩散控制的不可逆反应.

A new green technology for preparation of sodium dichromate with an electro-catalysis synthesis method is reported.The electrochemical behaviour of sodium chromate solution on the anode is studied with cyclic voltammetry.The electron transfer coefficient,diffusion coefficient,and rate constant of the electrode reaction are determined,and the effects of temperature on them are preliminarily discussed.The activation energy of electrode reaction is calculated.It is indicated that the anode possesses a very stable electrochemical behaviour and the electrode reaction is an irreversible diffusion-controlled reaction.