不同电极材料和不同酸介质对3-甲基吡啶电氧化的影响  

Effect of Different Electrode Materials and Different Acid Media on Electrooxidation of 3-Picoline

作　　者：张玉敏[1] 张恒彬[1] 曹学静[1] 徐玉玲[1] 李克昌[1] 

机构地区：[1]吉林大学化学学院,长春130021

出　　处：《高等学校化学学报》2005年第12期2323-2326,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20373020);吉林省自然科学基金(批准号:20020643-2)资助

摘　　要：在以质子交换膜为隔膜的电解池内,通过3-甲基吡啶在PbO2/Ti、SnO2/Ti、石墨和MnO2/Ti电极上的电氧化研究发现,在硫酸溶液中,PbO2电极是催化活性最高的工作电极.通过3-甲基吡啶在硫酸、高氯酸、磷酸和乙酸介质中的电氧化研究发现,对于PbO2电极,硫酸是最适合的介质.利用循环伏安实验和恒电位电解实验,研究了电氧化条件和电催化活性,比较了各种条件下的电流效率和选择性.In an electrolytic cell with a 3-picoline at PbO2/Ti, SnO2/Ti, graphi proton exchange membrane, it was found from the electrooxidation of te and MnO2/Ti electrodes that PbO2/Ti is a electrode material with the highest catalysis activity in aqueous solution of sulfuric acid. It was found from electrooxidation of 3-picoline in sulfuric, perchloric, phosphoric and acetic acid media that sulfuric acid is a most satisfied medium for PbOJTi electrode. The electrooxidation conditions and electrocatalytic activity were studied with cyclic voltammetry and potentiostatic electrolytic experiments, the current efficiency and the selectivity under various conditions were compared.

关 键 词：3-甲基吡啶 烟酸 酸介质 阳极材料 电氧化 

分 类 号：O646[理学—物理化学] O626.32[理学—化学]