NDLI: Formation of peracids from corresponding organic acids under oxygen electroreduction in gas-diffusion electrode

Content Provider	Springer Nature Link
Author	Kolyagin, G. A. Vasil’eva, I. S. Kornienko, V. L.
Copyright Year	2010
Abstract	The effect of conditions of electrolysis in aqueous solutions of (K$_{2}$SO$_{4}$ + H$_{2}$SO$_{4}$) electrolytes was studied in the presence of formic, acetic, and butyric acids on the formation of the corresponding peracids under oxygen electroreduction in carbon black gas-diffusion electrodes. In the presence of organic acids with the concentration of 1.5–4.7 M, as dependent in the electrolysis conditions, the current efficiency of H$_{2}$O$_{2}$ formation decreases from 70 to 13 % and its concentration drops from 2.3 to 0.4 M. Electrolysis under constant current (50–100 mA/cm$^{2}$) results in formation of peracids with the concentration of up to 7.5 mM. No direct dependence of the concentration of peracids on the concentration of the obtained H$_{2}$O$_{2}$ is observed. The presence of tetrabutylammonium bromide in the solution inhibits significantly peracid formation. It is assumed that synthesis of peracids occurs partly on the surface of carbon black through activation of the adsorbed acid by a hydrogen cation and further interaction with the active form of oxygen obtained under oxygen reduction or decomposition of H$_{2}$O$_{2}$.
Starting Page	957
Ending Page	959
Page Count	3
File Format	PDF
ISSN	10231935
Journal	Russian Journal of Electrochemistry
Volume Number	46
Issue Number	8
e-ISSN	16083342
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-08-29
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	oxygen electroreduction hydrogen peroxide performic acid peracetic acid perbutyric acid gas-diffusion electrode tetraalkylammonium salts electrosynthesis Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Electrochemistry

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