| 草酸电还原过程中的铅阴极表面状态变化研究 |
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| 引用本文： | 朱珠,张新胜,王爱菊.草酸电还原过程中的铅阴极表面状态变化研究[J].曲阜师范大学学报,2009,35(2):79-82. |
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| 作者姓名： | 朱珠 张新胜 王爱菊 |
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| 作者单位： | 华东理工大学联合反应所,200237,上海市
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| 摘 要： | 在饱和草酸溶液中运用双阶跃计时库仑技术研究草酸电解过程中电极表面吸附过程，以此探讨电极失活问题。研究发现在新鲜铅电极表面表现为产物乙醛酸（R）的吸附，但随着恒电流电解的进行电极表面逐渐地表现为反应物（O）的吸附。反应物的直接吸附不利于电荷转移，电极表面呈现钝化现象，电解电流效率也相应下降．
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| 关 键 词： | 双阶跃计时库仑法 草酸 电还原 铅电极 吸附 |
The Study of the Surface State of the Lead Cathode in the Electrolytic Reduction of Oxalic Acid |
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| ZHU Zhu,ZHANG Xin-sheng,YANG Hao.The Study of the Surface State of the Lead Cathode in the Electrolytic Reduction of Oxalic Acid[J].Journal of Qufu Normal University(Natural Science),2009,35(2):79-82. |
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| Authors: | ZHU Zhu ZHANG Xin-sheng YANG Hao |
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| Affiliation: | State Key Laboratory of Chemical Engineering;East China University of Science and Technology;200237;Shanghai;PRC |
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| Abstract: | To study the problem of electrode deactivation a double potential-step chronocoulometric method is applied in the study of adsorption on electrode surface in the progress of oxalic acid electrolysis.It is known that the product glyoxylic acid(R) adsorbed on the fresh electrode surface.While with the galvanostatic electrolysis the reactant oxalic acid(O) adsorbing gradually on the electrode surface is proved.The direct adsorption of reactant goes against the charge transfer,which lead to the passivation of t... |
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| Keywords: | double potential-step chronocoulometry oxalic acid electroreduction surface of lead electrode adsorption |
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