摘要
探究双膜三室工艺中不同影响因素对阴阳格室电解锰和二氧化锰产量及电流效率的影响。分别从溶液浓度、电解温度、pH、电流密度、添加剂含量及极板材质方面进行了考察。实验表明,双膜三室工艺中,控制溶液中Mn^2+质量浓度35~41g/L、电解温度35~37℃、阴极pH=7.0~7.2、阳极酸浓度2.5mol/L、阴极电流密度350~400 A/m^2、阳极电流密度800 A/m^2、阴极添加剂SeO2质量浓度0.03~0.04 g/L、阴极板采用不锈钢板、阳极板采用钛涂二氧化铅板条件下,阴极电流效率高于70%,阳极1 L电解液中二氧化锰产量高于40 g。
The effects of different factors,such as solution concentration,electrolysis temperature,pH,current density,additive content and plate material on the output and current efficiency of electrolytic manganese and manganese dioxide in the anode and cathode cell were investigated.The results showed that in the process of double membrane and three compartment electrolysis,the mass concentration of Mn^2+in the solution was controlled between at 35~41 g/L,electrolytic temperature was in the range of 35~37℃,cathode pH was 7.0~7.2.Anodic acid concentration was 2.5 mol/L,and cathode current density was 350~400 A/m^2.Anode current density was 800 A/m^2,SeO2 was used as cathode additive with a mass concentration of 0.03~0.04 g/L.Under the condition that the cathode plate was made of stainless steel plate and the anode plate was made of titanium coated lead dioxide plate,the anode and cathode had high yield.The current efficiency was higher than 70%,and the output of manganese dioxide in anode 1 L electrolyte was higher than 40 g.
作者
关文学
王三反
GUAN Wenxue;WANG Sanfan(School of Environmental and Municipal Engineering,L anzhou Jiaotong University,Lanzhou 730070,Gansu,China;Engineering Research Center of Ministry of Education for Comprehensive Utilization of Water Resources in Cold and Drought Areas,Lanzhou 730070,Gansu,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2020年第3期573-578,共6页
Fine Chemicals
基金
国家自然科学基金项目(21466019)。
关键词
离子交换膜
电解锰
电解二氧化锰
电流效率
双膜三室
有机电化学与工业
ion exchange membrane
electrolytic manganese
electrolytic manganese dioxide
current efficiency
double membranes and three compartment
electro-organic chemistry and industry
