摘要
比较了Ti/SnO2 +SbOx/PbO2 电极与Ti/PbO2 电极在电解Mn2 +体系中的析氧极化曲线、Mn2 +的氧化极化曲线和电极寿命 ,发现加入中间层后的Ti/SnO2 +SbOx/PbO2 电极对Mn2 +的电氧化有更好的催化活性和较长的使用寿命 .用正交实验法探讨影响Mn2 +→Mn3 ++e电极过程的因素 ,找出以Ti/SnO2 +SbOx/PbO2 电极为阳极用无隔膜电解槽电解Mn2 +的最佳工艺条件 ,在此条件下的平均电流效率达 95 .6 % .
Polarization curves of oxygen evolution, polarization curves of Mn 2+ oxidation and the lifetime in the electrooxidation of manganese(II) between the Ti/SnO 2+SbO x/PbO 2 electrode and the Ti/PbO 2 electrode were compared, and the results demonstrated that the electrocatalytic activity and electrochemical stability of the Ti/SnO 2+SbO x/PbO 2 electrode were superior to the Ti/PbO 2 electrode. The optimum conditions for the electrooxidation of manganese(II) taking the Ti/SnO 2+SbO x/PbO 2 electrode as anode in non membrane cell were given by orthogonal experiment. Current efficiency under optimum conditions was maintained at around 95.6%.
基金
山东鲁北企业集团总公司研究经费!(CC2 90 1)
中国科学技术大学基地建设经费资助项目
关键词
电氧化
无隔膜电解槽
钛
锰离子
电极
氧化铅
the Ti/SnO 2+SbO x/PbO 2 electrode
electrooxidation of manganese(II)
non membrane cell
