期刊名称：Universitatea Politehnica din Timisoara. Buletinul Stiintific. Seria Chimie si Ingineria Mediului
印刷版ISSN：1224-6018
出版年度：2008
卷号：53(67)
期号：01-02
出版社：Universitatea Politehnica din Timisoara
摘要：The previous studies shows that the KMnO4 regeneration used in chemical oxidation of chinoxaline to form the pyrazine-2,3-dicarboxylic acid is possible on platinum in chinoxaline absence or his presence and on nickel electrode. The purpose of this paper is investigation of the KMnO4 regeneration process on copper electrode. The studies was made by cyclic voltammetry at a concentrations of support electrolyte (KOH ) of about 5 to 10%, at 25-40ºC temperature, KMnO4 concentration until 6·10-2 M and maximum concentration of quinoxaline until 2.61·10-2 M in electrolite solution. On copper electrode it’s possible the process of oxidation of Mn6+ to Mn7+. Anodic regeneration of Mn7+ is favoured by rise of : KOH concentration, temperature, Mn7+ and Mn6+ concentration, quinoxaline.
关键词：electrochemistry, cyclic voltammetry, quinoxaline, pirazine-2,3-dicarboxilic acid, cooper electrode
