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A theoretical analysis and its application of the second order EC reactions at microelectrodes under steady‐state conditions
Author(s) -
Zhuang QianKun,
Chen HongYuan
Publication year - 1993
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19930110403
Subject(s) - chemistry , microelectrode , steady state (chemistry) , catalysis , order of reaction , chemical reaction , order (exchange) , first order , current (fluid) , thermodynamics , kinetics , mathematics , classical mechanics , electrode , organic chemistry , reaction rate constant , physics , finance , economics
With a new approach, the general current expressions of two typical second order catalytic reactions are obtained for disk, hemispherical and spherical microelectrodes under steady‐state conditions. This approach is based on the concept of reaction layer. For the second order EC reactions, we also discussed how it is possible to observe pseudo‐first order or second order behavior. This consideration allows the study of the fast chemical reactions and systems where the bulk concentrations of the reactants are nearly equal. Regeneration of Fe3+(EDTA) with H202 was selected as an example of a rapid catalytic reaction.