Modeling the electrosynthesis of H2O2 - Understanding the role of predatory species
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2023-03-17 |
| Journal | Chemical Engineering Science |
| Authors | Paulo Jorge Marques Cordeiro, Marcos Roberto de Vasconcelos Lanza, Manuel A. Rodrigo |
| Institutions | University of Castilla-La Mancha, Universidade de SĆ£o Paulo |
| Citations | 17 |
Abstract
Section titled āAbstractāIn this work, the electrosynthesis of hydrogen peroxide from the oxygen reduction reaction is evaluated using a flow-by electrochemical cell under different operation conditions and electrodes. In addition, a phenomenological model is proposed to understand the processes that occur inside the electrochemical reactor, and how the predatory species act against the production of H2O2 at high concentrations. In comparing different types of anodes, the electrosynthesis of H2O2 is almost twice as efficient when using DSA-Cl2 instead of BDD as the anode, which allowed it to reach concentrations as high as 4.2 g Lā¾1. The rate of decomposition of H2O2 is higher when the more vigorous anode is used. This decomposition is not only caused by the H2O2 on the anode surface or by its self-decomposition within the bulk, but it is mostly related to the electrochemical processes of production of H2O2ā²s predatory species such as ozone and peroxymonopersulfate. The formulated phenomenological model explains and satisfactorily reproduces the influence of anode type, electrolyte, and current density on the electrosynthesis of H2O2 at high concentrations obtaining regression coefficients higher than 0.99.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
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