Ti/nano TiO_2-ZrO_2修饰电极电催化还原马来酸制备丁二酸  

Ti/nano TiO_2-ZrO_2 Electrode with High Catalytic Activity for Electrocatalytic Reduction of Maleic Acid to Succinic Acid

作　　者：徐迈[1] 王凤武[1] 魏亦军[1] 朱其永[1] 方文彦[1] 朱传高[1] 

机构地区：[1]淮南师范学院化学与化工系,淮南232001

出　　处：《化学学报》2012年第12期1407-1411,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(No.21176099);安徽省高校优秀青年人才基金(No.2011SQRL138)资助项目~~

摘　　要：采用溶胶-凝胶法制备高活性Ti基纳米TiO2-ZrO2膜电极.通过X射线衍射分析表明,纳米TiO2-ZrO2粉体呈微-纳二级结构.扫描电子显微镜测试表明,颗粒平均尺寸约为30 nm.通过循环伏安和恒电流电解技术研究发现,Ti/nanoTiO2-ZrO2电极对马来酸电催化还原制备丁二酸的活性要高于Ti/nanoTiO2电极,反应过程受扩散控制.以钛基氧化钌电极为阳极,Ti/nano TiO2-ZrO2膜电极为阴极进行恒电流电解实验.结果表明,控制电流密度20 mA cm-2,温度60℃,丁二酸的产率达到96%.A highly active Ti/nano TiO2-ZrO2 film modified electrode used for electrocatalytic reduction of maleic acid was achieved by sol-gel method. Nano TiO2-ZrO2 particles with the mono-dispersion structure and the diameter of about 30 nm were observed by XRD and SEM. By cyclic voltammetry and galvanostatic electrolysis experiments in maleic acid＋ 1.0 mol·L 1 H2SO4, the Ti/nano TiOz-ZrO2 film modified electrode was found to be much more electrocatalytive than the conventional Ti/nanoTiO2 cathode. The reaction proc- ess is controlled by diffusion. Galvanostatic electrolysis experiments were carried out on the Ti/nano TiOz-ZrO2 film modified electrode. At a current density of 20 mA,cm-2, a high yield of 96% was obtained at 60 ℃.

关 键 词：Ti/nano TiO2-ZrO2修饰电极 电合成 电催化 丁二酸 

分 类 号：TQ225.144[化学工程—有机化工]