Abstract
The possibility of electrosynthesis of hydrogen peroxide in the electroreduction of oxygen in a gas-diffusion electrode in solutions of salts that form the molecular addition products (peroxo solvates) with H2O2 was studied. In KF and potassium and sodium phosphate solutions, H2O2 was obtained at concentrations of 2.3–3.6 M at current densities of 0.1–0.15 A/cm2 and current efficiencies of 75–92%. The resulting solutions were concentrated to 11–27 M to give solid peroxo solvates with high hydrogen peroxide contents (22–50%). These results demonstrate that the application of gas-diffusion electrodes for electrosynthesis of inorganic products can be significantly expanded.
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Original Russian Text © G.A. Kolyagin, V.L. Kornienko, 2014, published in Elektrokhimiya, 2014, Vol. 50, No. 8, pp. 884–889.
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Kolyagin, G.A., Kornienko, V.L. Electrosynthesis of hydrogen peroxide in solutions of salts that form molecular addition products (peroxo solvates) with it. Russ J Electrochem 50, 798–803 (2014). https://doi.org/10.1134/S1023193514080072
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DOI: https://doi.org/10.1134/S1023193514080072