Evaluation and improvement of dynamic optimality in electrochemical reactors

Vijayasekaran, B.; Basha, C. Ahmed

doi:10.1016/j.electacta.2005.04.015

Cited by 9 publications

(3 citation statements)

References 19 publications

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“…The steep fall in the potential that appears at about -1.65V is due to avoid the unwanted electron transfer reaction leading to P, a by product. Similar results are reported in the electrochemical reduction of nitrobenzene to p-aminophenol [4]. The underlying cause for the increase in electrode potential after certain a period is that the transfer coefficient for the reaction I → D is larger than that for the reaction U → T; that is, high potential kinetically favor the first reaction.…”

supporting

confidence: 81%

“…Likewise, the separability of total current into faradic and non-faradic current densities is also greatly ignored. As it is principally characteristic for dynamic models to account for surface concentration dynamics [4], this paper provides a new strategy for the optimal time-varying potential control by accounting the above phenomena. The main feature of the proposed strategy is that the tasks to account surface dynamics and to keep a total current separation as a constant are fulfilled all together.…”

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confidence: 99%

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Batch Electrochemical Reactor Dynamics and Optimal Control of Electrodimerization of Acrylonitrile

Subramanian,

Boovaragavan

2006

Meet. Abstr.

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confidence: 81%

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confidence: 99%

Batch Electrochemical Reactor Dynamics and Optimal Control of Electrodimerization of Acrylonitrile

Subramanian,

Boovaragavan

2006

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“…The effect of surface concentration on the reaction rate plays an important role in many electrochemical systems [8][9][10] such as batteries and electrochemical synthesis. To solve this system of equations (Eqs.…”

Section: Semi-analytical Methodsmentioning

confidence: 99%

A novel approach for computing tertiary current distributions based on simplifying assumptions

Boovaragavan

Basha

2006

J Appl Electrochem

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A novel yet efficient method for the computation of simplified tertiary current density and surface concentration distributions in electrochemical processes is presented. The method is rooted in the important physiochemical property that the activation potential is constant and uniform for given electrode material during the electrolysis. The technique is attractive because it involves a single iterative procedure against the conventional doubly iterative procedure. The initial assumption of current distribution along the electrode is also not necessary, as it involves only an assumption of a suitable power series to solve steady state laminar convective diffusion. Accordingly the method is relevant only for electrodes of constant activation polarization, but this holds good for situations where the electrode configurations are such that the primary current density distribution is almost uniform and for situations where the Wagner number is high. To illustrate the utility of the technique the procedure is applied to some realistic problems encountered in electrochemical engineering such as the current distribution either in plane-parallel plate electrode with electrolyte flowing between them or a moving electrode with the electrolyte stationary.

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Computation of Current Distributions using FEMLAB

et al. 2009

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An efficient method for the computation of current density and surface concentration distributions in electrochemical processes is analyzed using the commercial mathematical software FEMLAB. To illustrate the utility of the software, the procedure is applied to some realistic problems encountered in electrochemical engineering, such as current distribution in a continuous moving electrode, parallel plate electrode, hull cell, curvilinear hull cell, thin layer galvanic cell, through-hole plating, and a recessed disc electrode. The model equations of the above cases are considered and their implementations into the software, FEM-LAB, are analyzed. The technique is attractive because it involves a systematic way of coupling equations to perform case studies.

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Evaluation and improvement of dynamic optimality in electrochemical reactors

Cited by 9 publications

References 19 publications

Batch Electrochemical Reactor Dynamics and Optimal Control of Electrodimerization of Acrylonitrile

Batch Electrochemical Reactor Dynamics and Optimal Control of Electrodimerization of Acrylonitrile

A novel approach for computing tertiary current distributions based on simplifying assumptions

Computation of Current Distributions using FEMLAB

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