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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 % .
The oxygen evolution polarization curve, oxidation polarization curve and electrode life of Ti / SnO2 + SbOx / PbO2 electrode and Ti / PbO2 electrode in the electrolysis Mn2 + system were compared. It is found that Ti / SnO2 + SbOx / PbO2 electrode has better catalytic activity and longer service life for Mn2 + electrooxidation.Orthogonal experiment was used to investigate the factors that affect the Mn2 + → Mn3 + + e electrode process and to find out the factors of Ti / SnO2 + SbOx / PbO2 electrode is the best condition for Mn2 + electrolysis without diaphragm cell. Under this condition, the average current efficiency reaches 95.6%.