Accession Number:

ADA196652

Title:

Determination of Kinetic Parameters from Steady-State Microdisk Voltammograms

Descriptive Note:

Technical rept.

Corporate Author:

STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1988-01-01

Pagination or Media Count:

14.0

Abstract:

Equations are derived for the voltammetric response of an irreversible system in the steady-state regime at a small electrode. Voltammetric data for oxidation of FeII in 0.1 M H2SO4 at circular platinum electrodes of radius 5 and 12.5 micro are analyzed by a semilogarithmic technique and by reciprocal plots analogous to treatments of rotating disk voltammograms. The resulting values of kinetic parameters are standard rate constant ks 1.5 or - 0.2 X .01 cms and anodic transfer coefficient 1- alpha 0.67 or - 0.01. This technique compares favorably with others for determining rate parameters in the same range by virtue of technical and mathematical simplicity. Keywords Microelectrodes, Electrochemical kinetics, Iron, Steady state, Reprints.

Subject Categories:

  • Physical Chemistry
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE