2-甲基吡啶的槽内式间接电氧化  

In-Cell Indirect Electrooxidation of 2-Picoline

作　　者：李克昌[1] 曹学静[1] 张恒彬[1] 张玉敏[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》2007年第9期1747-1750,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20373020)资助.

摘　　要：在质子交换膜为隔膜的电解槽内,以2-甲基吡啶为原料,以Cr2O27-/Cr3+为媒质,采用间接电氧化法研究了合成2-吡啶甲酸的反应条件.实验结果表明,硫酸浓度、硫酸铬浓度、反应温度、2-甲基吡啶浓度和阳极电位对产率、转化率、选择性和电流效率均有影响.通过变化规律的研究,找到了各个影响因素的最佳条件为:硫酸浓度为6.0mol/L,反应温度为60℃,硫酸铬浓度为0.15mol/L,2-甲基吡啶浓度为0.1mol/L,阳极电位为1.50V.In the electrolytic cell with proton exchange membrane as a diaphragm, the reaction conditions for preparing 2-pyridinecarboxylic acid from 2-picoline via indirect electrooxidation with Cr2O7^2-/Cr^3＋ as a mediator were studied, the results show that concentrations of H2SO4, Cr2 （ SO4 ）3 and 2-picoline, reaction temperature and anode potential have an important influence on yield, conversion, selectivity and current efficiency.The optimal conditions ara as follows： H2SO4 concentration 6. 0 mol/L, reaction temperature 60 ℃, Cr2 （SO4）3 concentration 0. 15 mol/L, 2-Picoline concentration 0. 1 mol/L, anode potential 1.50V.

关 键 词：2-甲基吡啶 2-吡啶甲酸 CrO2-/Cr^3+ 间接电氧化 

分 类 号：O646[理学—物理化学]