羟基新戊醛在Ti/Sb_2O_5-SnO_2电极上的电氧化研究  

Electrooxidation of Hydroxypivalaldehyde at Ti/Sb_ 2O_ 5-SnO_ 2 Electrode

作　　者：余建国[1] 曹学静[1] 张恒彬[1] 张玉敏[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》2006年第10期1945-1948,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：在以质子交换膜为隔膜的电解槽内,以硫酸为支持电解质,羟基新戊醛为原料,在Ti/Sb2O5-SnO2电极上直接电氧化制取羟基新戊酸.线性扫描伏安曲线显示,加入羟基新戊醛使氧化电流密度明显提高,表明Ti/Sb2O5-SnO2电极对羟基新戊醛氧化有电催化作用.通过恒电位电解实验研究羟基新戊醛浓度、pH、温度及阳极电位对生成羟基新戊酸选择性和电流效率的影响,结果表明,pH对选择性和电流效率影响最大.Electrooxidation of hydroxypivalaldehyde was studied at a Ti/Sb2 O5 -SnO2 electrode using sulfuric acid as a supporting electrolyte in an electrolytic cell with a proton exchange membrane. The linear scan voltammograms showed the current densities at the same electrode potential increased obviously after hydroxypivalaldehyde was added, this fact indicates that the electrode has an electrocatalytic activity to hydroxypivalaldehyde oxidation. Using potentiostatic electrolysis method, the effects of hydroxypivalaldehyde concentration, pH, temperature and anode potential on the selectivity and the current efficiency of the hydroxypivalaldehyde electrooxidation were investigated, it can be found that the effect of pH is the most obvious.

关 键 词：羟基新戊醛 羟基新戊酸 电氧化 Ti/Sb2O5-SnO2电极 

分 类 号：O646[理学—物理化学]