离子液体中1,5-二硝基蒽醌电还原的研究

Electrochemical Reduction of 1,5-Dinitroanthraquinone in Ionic Liquid : EMimBF_4

采用循环伏安法、稳态极化曲线法和恒电位电解法研究了离子液体EMimBF4中1,5-二氨基蒽醌在微铂电极上的电还原特性.实验结果表明:在EMimBF4中,随着1,5-二氨基蒽醌和水的浓度变化,循环伏安曲线的峰电位和峰电流呈现复杂的变化规律;温度的变化也对循环伏安曲线的峰电位和峰电流产生一定的影响.1,5-二硝基蒽醌在铂电极上的电还原反应为单分子12电子5步骤电化学过程,其主要产物为1,5-二氨基蒽醌.

The electroreduction performance and mechanism of 1, 5-dinitroanthraquinone in ionic liquid： EMimBF4 are studied by means of polarization curve, cyclic vohammetry and constant potential electrolysis. Experimental results show that the concentration of 1,5-dinitroanthraquinone and of water in EMimBF4 has complicated influence on the peak potential and peak current of cyclic voltagram. Temperatures also have an effect on the peak potential and peak current of cyclic voltagram. The mechanism investigated by cyclic voltammetry and constant-potential electrolysis is one molecule and five steps electrochemical process transfering 12e. The main product is 1,5-diaminoanthraquinone.