摘要
采用稳态极化法和不同温度下稳态极化曲线法研究了酸性介质中顺丁烯二酸在锡电极上阴极还原的动力学过程,计算了相关的动力学参数,结果表明:顺丁烯二酸在锡电极上的交换电流密度i0为0.0024 A/cm2,传递系数α为0.288,表观活化能为19.266 kJ/mol,低于顺丁烯二酸在铅电极上电还原反应的表观活化能,证明顺丁烯二酸在锡电极上更容易被还原。
The dynamics of electrochemical reduction of maleic acid on tin electrode in acid medium was studied and the corresponding dynamic parameters were determined according to the results of steady-state polarization curves under different temperatures. It showed that the exchange current density was 0.0024 A/cm2 and the transfer coefficient α was 0.288 on tin electrode. The apparent activation energy of the electroreduction of maleic acid was19.266 kJ/mol on tin electrode which was lower than that on lead electrode. It was proved that the reduction of maleie acid on tin electrode was more easily than on lead electrode.
出处
《浙江化工》
CAS
2012年第10期15-18,共4页
Zhejiang Chemical Industry
关键词
顺丁烯二酸
锡电极
电化学还原
稳态极化
动力学参数
Maleic acid
Tin electrode
electroreduction
steady-state polarization
dynamic parameter
