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Modelling of Irreversible Homogeneous Reaction on Finite Diffusion Layers

Electrochem, ISSN: 2673-3293, Vol: 3, Issue: 3, Page: 479-491
2022
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Article Description

The mathematical model proposed by Chapman and Antano (Electrochimica Acta, 56 (2010), 128–132) for the catalytic electrochemical–chemical (EC’) processes in an irreversible second-order homogeneous reaction in a microelectrode is discussed. The mass-transfer boundary layer neighbouring an electrode can contribute to the electrode’s measured AC impedance. This model can be used to analyse membrane-transport studies and other instances of ionic transport in semiconductors and other materials. Two efficient and easily accessible analytical techniques, AGM and DTM, were used to solve the steady-state non-linear diffusion equation’s infinite layers. Herein, we present the generalized approximate analytical solution for the solute, product, and reactant concentrations and current for the small experimental values of kinetic and diffusion parameters. Using the Matlab/Scilab program, we also derive the numerical solution to this problem. The comparison of the analytical and numerical/computational results reveals a satisfactory level of agreement.

Bibliographic Details

Singaravel Anandhar Salai Sivasundari; Rathinam Senthamarai; Mohan Chitra Devi; Lakshmanan Rajendran; Michael E. G. Lyons

MDPI AG

Chemical Engineering; Chemistry; Materials Science

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