Bromate-Anion Electroreduction at Rotating Disc Electrode under Steady-State Conditions: Comparison of Numerical and Analytical Solutions for Convective Diffusion Equations in Excess of Protons
- Authors: Antipov A.E.1,2, Vorotyntsev M.A.1,2,3,4, Konev D.V.1,3, Antipov E.M.1,2
- 
							Affiliations: 
							- Mendeleev University of Chemical Technology
- Lomonosov Moscow State University
- Institute of Problems of Chemical Physics
- UMR 6302 CNRS-Université de Bourgogne
 
- Issue: Vol 55, No 5 (2019)
- Pages: 458-466
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/192206
- DOI: https://doi.org/10.1134/S1023193519050033
- ID: 192206
Cite item
Abstract
The article contains results of numerical analysis of convective-diffusion transport equations for the components of the bromate anion electrochemical reduction process at rotating disk electrode via the redox-mediator autocatalysis (EC″) mechanism. The problem is solved taking into account the difference in the diffusion coefficients of the components. It is assumed that the concentration of protons inside the solution is constant, including the diffusion layer, due to its high value compared to the concentration of bromate-anions. Comparison of the obtained results with the predictions of an approximate analytical study of the same system (Vorotyntsev, M.A., Antipov, A.E., Electrochim. Acta, 2017, vol. 246, p. 1217) confirms the adequacy of the developed analytical approach to the calculating of both the concentration profiles of the system’s components (with the exception of the case of very thick diffusion layer) and the current density for a wide range of external parameters: the solution composition, rate of the comproportionation reaction, the convection intensity (the electrode rotation velocity) and the passing current.
About the authors
A. E. Antipov
Mendeleev University of Chemical Technology; Lomonosov Moscow State University
							Author for correspondence.
							Email: 89636941963antipov@gmail.com
				                					                																			                												                	Russian Federation, 							Moscow, 125047; Moscow, 119992						
M. A. Vorotyntsev
Mendeleev University of Chemical Technology; Lomonosov Moscow State University; Institute of Problems of Chemical Physics; UMR 6302 CNRS-Université de Bourgogne
							Author for correspondence.
							Email: mivo2010@yandex.com
				                					                																			                												                	Russian Federation, 							Moscow, 125047; Moscow, 119992; Chernogolovka, Moscow oblast, 142432; Dijon						
D. V. Konev
Mendeleev University of Chemical Technology; Institute of Problems of Chemical Physics
														Email: mivo2010@yandex.com
				                					                																			                												                	Russian Federation, 							Moscow, 125047; Chernogolovka, Moscow oblast, 142432						
E. M. Antipov
Mendeleev University of Chemical Technology; Lomonosov Moscow State University
														Email: mivo2010@yandex.com
				                					                																			                												                	Russian Federation, 							Moscow, 125047; Moscow, 119992						
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