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Theoretical Analysis of Changes in the System’s Composition in the Course of Oxidative Electrolysis of Bromide Solution: pH Dependence

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dc.contributor.authorPetrov, M. M.
dc.contributor.authorKonev, D. V.
dc.contributor.authorAntipov, A. E.
dc.contributor.authorKartashova, N. V.
dc.contributor.authorKuznetsov, V. V.
dc.contributor.authorКузнецов, Виталий Владимирович
dc.date.accessioned2024-11-27T12:16:46Z
dc.date.available2024-11-27T12:16:46Z
dc.date.issued2020
dc.description.abstract© 2020, Pleiades Publishing, Ltd.Changes in the indicator electrode potential (at zero current) E and (quasi) equilibrium composition of aqueous solution in the anode chamber of the model electrolyzer, which initially contained 0.5 M concentration of bromide anions, provided that the solution was kept at a constant pH and constant (together with the gas phase above it) total number of Br atoms in all its compounds, are calculated. Theoretical analysis was carried out for four different hypotheses regarding the possible extent of electrolysis and the nature of the processes are theoretically analyzed. They are: (1) no formation of bromine compounds with positive oxidation states occurs, i.e., electrolysis only leads to the formation of molecular bromine in its various forms (the dissolved state of Br2, as well as phases of liquid bromine B22liq and bromine vapor in the gas space above the B22vap solution); (2) oxidation of bromide ions leads to the formation of bromine compounds in its oxidation state up to +1 inclusive; (3) the process proceeds with the formation of both bromate ion (BrO3 -) and compounds of bromine with lower oxidation states in solution (Br3-, Br5- Br2,B22liq,B22vap, BrO -, HBrO); (4) in addition to the components specified in clause (3), the formation of the perbromate anion (BrO4 -) is also taken into consideration. All electrochemical and chemical reactions involving bromine-containing species have been taken into consideration in the hypothesis framework of the system’s evolution (1), (2), (3), or (4), are assumed to be in a (quasi)equilibrium state. Predictions for all hypotheses (1), (2), (3), or (4) have been compared at three different pH values of the solution (2, 6 and 10 of Br-containing anolyte composition’s evolution in the course of electrolysis.
dc.format.extentС. 883-898
dc.identifier.citationTheoretical Analysis of Changes in the System’s Composition in the Course of Oxidative Electrolysis of Bromide Solution: pH Dependence / Petrov, M.M. [et al.] // Russian Journal of Electrochemistry. - 2020. - 56. - № 11. - P. 883-898. - 10.1134/S1023193520100109
dc.identifier.doi10.1134/S1023193520100109
dc.identifier.urihttps://www.doi.org/10.1134/S1023193520100109
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85097585071&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000598761300002
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22736
dc.relation.ispartofRussian Journal of Electrochemistry
dc.titleTheoretical Analysis of Changes in the System’s Composition in the Course of Oxidative Electrolysis of Bromide Solution: pH Dependence
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue11
oaire.citation.volume56
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relation.isAuthorOfPublication.latestForDiscoverya17dd589-87e3-4abd-95f3-abe99e584c52
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