Ti/SnO_2-MnO_x-RuO_2/MnO_2电极的制备及其析氧、析氯性能  

Preparation of Ti/SnO_2-MnO_x-RuO_2/MnO_2 Electrode and Its Property of Oxygen and Chlorine Evolution

作　　者：李艳红[1,2] 王三反[1,2] 李志伟[1] 张学敏[1,2] LI Yan-hong;WANG San-fan;LI Zhi-wei;ZHANG Xue-min(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Engineering Research Center for Cold and Arid Regions Water Resource Comprehensive Utilization, Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]兰州交通大学寒旱区水资源综合利用教育部工程研究中心,甘肃兰州730070

出　　处：《兰州交通大学学报》2018年第1期103-106,112,共5页Journal of Lanzhou Jiaotong University

摘　　要：为了改善金属氯化物溶液电解过程中产生的氯气污染问题,采用热分解法制备了以钛为基体、SnO_2-MnO_xRuO_2为中间层、MnO_2为活性层的电极.应用极化曲线法和Tafel曲线分析法测定了电极在25℃、1moL·L^(-1)的H_2SO_4溶液和NaCl溶液中的析氧与析氯电位.在25℃,电流密度为500 A·m^(-2)条件下,用0.5 mol·L^(-1)的H_2SO_4为电解液,测试电极寿命.试验表明:该电极的析氯电位比析氧电位低0.03V,因此,电解过程中会产生部分氧气,减少了氯气的产生量.电极快速寿命测试结果表明,该电极的寿命为8h.In order to improve the problem of chlorine gas pollution generated in the electrolytic process of metal chloride solution,this paper adopted thermal decomposition method to prepare the electrode with titanium as the substrate,SnO2-MnOx-RuO2 as the middle layer and MnO2 as the active layer.The oxygen and chlorine evolution potentials of electrode at 25℃,1 mol/L sulfuric acid solution and sodium chloride solution were determined by using polarization curve method and the Tafel curve analysis.The life of the electrode was tested at 25℃,with current density being 500 A·m-2,and with 0.5 mol·L-1 sulfuric acid being the electrolyte.Results show that the chlorine potential of the electrode is lower than the oxygen potential by 0.03V,so the electrolysis process produces a certain amount of oxygen and reduces the output of chlorine gas.The results of fast life-test of electrode show that the life of the electrode is 8 h.

关 键 词：析氧极化曲线 析氯极化曲线 Tafel曲线 电极寿命 

分 类 号：TQ050.4[化学工程]