摘要
利用循环伏安法研究在酸性条件下氧电极辅助催化组分 (Fe)的氧化还原反应机理并计算其扩散系数 .通过对谱图分析研究表明 ,氧电极辅助组分 (Fe)在酸性条件下发生连续反应 ,此连续反应为可逆 -准可逆反应 .利用可逆反应求算 Fe( )扩散系数 。
Investigates the redox reaction mechanism of iron as an auxiliary catalyst component for the oxygen electrode in acid environment, and calculates its diffusion coefficient by cyclic voltammetry. Auxiliary catalyst iron for oxygen electrode in acid environment occurs multi electron consecutive reactions, controlled by ion diffusion. The reaction Fe(Ⅲ)→Fe(Ⅱ) has good reversibility, and reaction Fe(Ⅱ)→Fe is considered as quasi reversible, as are apparent from the cyclic voltammograms. Making use of the reversible reaction characteristics, Fe(Ⅲ) diffusion coefficient is obtained to 6 81×10 -6 cm 2/s. The experimental value is in good agreement with the theoretical value.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2002年第4期527-529,共3页
Transactions of Beijing Institute of Technology
基金
兵科院预研项目
关键词
循环伏安法
连续反应
合金催化剂
铁助剂
cyclic voltammetry
consecutive reaction
alloy catalyst
iron auxiliary catalyst