海水温度对电解制氯效率的影响研究

通过循环伏安法、极化曲线测试及电解效率试验,研究了温度对钌铱锡金属氧化物阳极电解效率的影响以及产生的原因。金属氧化物阳极的电流效率会随温度的升高表现出先升高后略微降低直至基本不变。随温度的升高阳极表面活性点数目逐渐增加,同时析氯电位析氧电位、发生改变;而在低温下两者之间的差距较小。这是低温下电解效率较低的主要原因。

Research on the influence of seawater temperature on the efficiency of production of chlorine by electrolysis

The influence of seawater temperature on the electrolytic efficiency of Ru-Ir-Sn metal oxide anodes and its mechanism are studied by cyclic vohammetry, polarization curve and electrolytic efficient test. The results indicate that with the rising of seawater temperature, the electrolysis efficiency of metal oxide anodes increases and then slightly decreases and tends to steady. Meanwhile, the number of the electrochemical active sites on the anodes surface increases. The chlorine and oxygen evolution potential also have a posi- tive shift at low temperature. And with the decreasing of seawater temperature, the chorine evolution potential is closed to the oxygen e- volution potential, which is the main cause of the poor electrolytic efficiency at low temperature.