草酸在表面合金电催化剂上还原过程的循环伏安和原位红外反射光谱研究  

Reduction of Oxalic Acid on Surface Alloy/GC Electrode Studied by Using CV and in situ FTIR Spectroscopy

作　　者：陈声培[1] 黄桃[1] 张麒[1] 贡辉[1] 孙世刚[1] 

机构地区：[1]厦门大学化学系固体表面物理化学国家重点实验室,福建厦门361005

出　　处：《精细化工》2003年第2期91-93,共3页Fine Chemicals

基　　金：厦门市科技攻关项目基金资助 ( 35 0 2Z2 0 0 1) ;福建省自然科学基金资助 (E9910 0 0 3) ;国家自然科学基金资助 ( 90 2 0 6 0 39;2 0 0 2 10 0 2 )~~

摘　　要：采用自行研制的碳载表面合金电催化材料 (Surfacealloy/GC)作为研究电极 ,通过电化学方法和电化学原位FTIR反射光谱等技术 ,对该催化剂在电有机合成中的性能进行研究。结果表明 :所研制的Surfacealloy/GC对草酸的加氢还原表现出很高的电催化活性 ,草酸的还原电位为 - 0 .40V ,与通常用的阴极铅材料相比 ,正移约6 0 0mV ;电化学原位FTIR反射光谱研究结果指出 ,草酸的还原产物主要为乙醛酸 ,表明该电极在较低的过电位下就能还原草酸生成乙醛酸。Reduction of oxalic acid on electrode of surface alloy supported on glassy carbon was studied by using cyclic voltammetry and in situ FTIR spectroscopy.The results demonstrated that the surface alloy exhibited a high electrocatalytic activity towards oxalic acid reduction.The over potential of oxalic acid reduction was significantly reduced by about 600 mV in comparison with that measured on a Pb cathode that was used industrially for the reduction. The main reduction product identified by using in situ FTIR spectroscopy was glyoxylic acid,indicating that the surface alloy/GC electrode exhibited an excellent selectivity for glyoxylic acid in oxalic acid reduction.

关 键 词：草酸 表面合金电催化剂 还原过程 循环伏安 原位红外反射光谱 研究 乙醛酸 

分 类 号：O623.613[理学—有机化学]