原位FTIR反射光谱研究碱性介质中乙醇在nmPt/GC电极上的氧化  

In-Situ FTIR Spectroscopic Studies of Electro Oxidation of Ethanol in Alkaline Media at a nm-Pt/GC Electrode

作　　者：陈国良[1] 孙世刚[2] 陈声培[2] 郑明森[2] 夏盛清[2] 吴起辉 周志有[2] 姜艳霞[2] 

机构地区：[1]漳州师范学院化学系,漳州363000 [2]厦门大学化学系,固体表面物理化学国家重点实验室,厦门361005

出　　处：《光谱学与光谱分析》2000年第6期770-772,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目!(2 98330 60 );国家教育部科学技术重点研究项目!(991 77)资助

摘　　要：运用电化学循环伏安和原位FTIR反射光谱研究了碱性介质中乙醇在nm Pt/GC电极上的氧化。结果表明 ,主要产物是CH3 COO-,仅存在少量乙醛 ,未检测到CO谱峰。与酸性介质中乙醇氧化的双途径机理不同 ,碱性介质中乙醇的氧化未经过解离吸附的中间步骤。The electro oxidation of ethanol on a nm Pt/GC electrode in alkaline solutions was investigated by using cyclic Voltammetry and in situ FTIR spectroscopy.The results demonstrated that the main product of ethanol oxidation was CH 3COO -,only small quantity of CH 3CHO was determined simultaneously.In contrast with the dual path reaction mechanism for the oxidation of ethanol in acid media,the oxidation of ethanol in alkaline media was revealed via the intermediate process of dissociative adsorption.

关 键 词：乙醇 mm-Pt/GC 原位FTIRS 电催化氧化 

分 类 号：O623.411[理学—有机化学] O646.5[理学—化学]