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本文研究了有锡锑中间层的二氧化锰阳极的电化学性能和在电合成氯酸钠中的应用。在电流密度为１０Ａ／ｄｍ２、温度为４０℃时，阳极析氯电位为１.３９６Ｖ（Ｓ、Ｃ、Ｅ）；阳极析氧电位为 １．５１０Ｖ（Ｓ、Ｃ、Ｅ）．用析氧、析氯极化曲线探讨了温度、电流密度对析氧量的影响。同时还探讨了锡锑中间层二氧化锰阳极在氯酸钠合成中的工艺条件。在 ｉ＝１０～１５Ａ／ｄｍ２，ｉｃ＜７Ａ／ｌ，ｔ＝９０℃，ｐＨ＝５．６～６．５时，电流效率可达８４％，槽压为３．０５～３．３５Ｖ。 在强化寿命测试中，阳极电流密度为１００Ａ／ｄｍ２，在９０±５℃、１ＭＨ２ＳＯ４溶液中，涂有锡锑中间层的二氧化锰阳极的强化寿命为无中间层二氧化锰阳极的５．３倍。在７０±５℃加５％ＨＣｌ的饱和ＮａＣｌ溶液中，为８．４倍。
In this paper, the electrochemical performance of manganese dioxide anode with tin-antimony intermediate layer and its application in electrosynthesis of sodium chlorate were investigated. At a current density of 10 A / dm2 and a temperature of 40 ° C, the chlorine evolution potential of the anode was 1.396 V (S, C, E). The anodic oxygen evolution potential was 1.510 V (S, C, E). The effects of temperature and current density on the oxygen evolution rate were discussed by analyzing the polarization curves of oxygen and chlorine. At the same time, the process conditions of the synthesis of sodium chlorate in tin-antimony intermediate layer manganese dioxide anode were also discussed. At i = 10 ~ 15A / dm2, ic <7A / l, t = 90 ℃, pH = 5.6 ~ 6.5, the current efficiency can reach 84% and the cell pressure is 3.05 ~ 3.35V. In the enhanced life test, the anode current density of 100A / dm2, at 90 ± 5 ℃, 1MH2SO4 solution, antimony-doped manganese dioxide anode intermediate layer of manganese dioxide anode life without strengthening the anode 5.3 Times In 70 ± 5 ℃ plus 5% HCl in saturated NaCl solution, 8.4 times.