Abstract
Aim of the present communication is to show experimental results, and related conclusions, on the electrochemical oxidation (EO) of tartaric acid (TA), which has been oxidized at Ti/PbO2, Ti/Pt, Pt and HBDD electrodes at different current densities in acidic media. TA complete mineralization has been achieved only at HBDD and Ti/PbO2, being higher the faradaic efficiency at the latter electrode. At Pt electrode, the electroxidation was found to be extremely slow, in acidic conditions. The experimental evidence has shown that the main factor is the interaction of the organic substrate and hydroxyl radicals with the electrode surface, during TA oxidation. In the case of the EO of oxalic acid (OA) in acidic media that was previously studied, better results were obtained at the Pt electrode, supporting the idea that the interaction of organic substrate with the electrode surface, was the main determining parameter and based on the results here reported, this idea was confirmed for TA, more complex compound than OA.
Keywords: Adsorption, Aqueous media, Electrochemical incineration, Electrode, Tartaric acid, oxidation, fermentation, electroactive, electrochemistry, trooxidation
Current Organic Chemistry
Title:Anodic Oxidation of Tartaric Acid at Different Electrode Materials
Volume: 16 Issue: 17
Author(s): Djalma Ribeiro da Silva, Maiara Barbosa Ferreira, Chrystiane do Nascimento Brito, Sergio Ferro, Carlos A. Martínez-Huitle and Achille De Battisti
Affiliation:
Keywords: Adsorption, Aqueous media, Electrochemical incineration, Electrode, Tartaric acid, oxidation, fermentation, electroactive, electrochemistry, trooxidation
Abstract: Aim of the present communication is to show experimental results, and related conclusions, on the electrochemical oxidation (EO) of tartaric acid (TA), which has been oxidized at Ti/PbO2, Ti/Pt, Pt and HBDD electrodes at different current densities in acidic media. TA complete mineralization has been achieved only at HBDD and Ti/PbO2, being higher the faradaic efficiency at the latter electrode. At Pt electrode, the electroxidation was found to be extremely slow, in acidic conditions. The experimental evidence has shown that the main factor is the interaction of the organic substrate and hydroxyl radicals with the electrode surface, during TA oxidation. In the case of the EO of oxalic acid (OA) in acidic media that was previously studied, better results were obtained at the Pt electrode, supporting the idea that the interaction of organic substrate with the electrode surface, was the main determining parameter and based on the results here reported, this idea was confirmed for TA, more complex compound than OA.
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Cite this article as:
Ribeiro da Silva Djalma, Barbosa Ferreira Maiara, do Nascimento Brito Chrystiane, Ferro Sergio, A. Martínez-Huitle Carlos and De Battisti Achille, Anodic Oxidation of Tartaric Acid at Different Electrode Materials, Current Organic Chemistry 2012; 16 (17) . https://dx.doi.org/10.2174/138527212803251686
DOI https://dx.doi.org/10.2174/138527212803251686 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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