Catalytic and electrocatalytic oxidation of oxalic acid in aqueous solutions of different compositions

Chollier-Brym, M.J.; Epron, Florence; Lamy‐Pitara, E.; Barbier, J.

doi:10.1016/s0022-0728(99)00328-9

Cited by 28 publications

(20 citation statements)

References 33 publications

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“…In agreement with refs. [11,14,[21][22][23], CV curves at the Pt electrode in the presence of OA show that the organic molecule adsorbs at the electrode surface, as witnessed by the modification of hydrogen adsorption and desorption peaks, which are shifted towards more negative potentials when OA is present in the solution. This behavior is characteristic of a weak adsorption, similar to that generally observed in the case of anions.…”

Section: Pt and Glassy Carbonmentioning

confidence: 97%

Electroxidation of oxalic acid at different electrode materials

2010

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Oxalic acid is one of the proposed metabolites of the anodic oxidation of more complex organic molecules. In spite of its simple structure, its mineralization strongly depends on the nature of the electrode material at which the process is carried out. Sargisyan and Vasil’ev (Elektrokhimiya 18:845, 1982) pointed out such dependence, investigating the kinetic behavior of OA at different metal (Rh, Pd, Os, Ir, Pt and Au), at dimensionally stable anodes (RuO2–TiO2) and at glassy carbon (GC) electrodes. Their conclusions highlighted the important role played by the organic anion adsorption step, claiming that OA is\ud oxidized with increasing difficulty at electrode materials having higher oxygen affinity. More recently, these assumptions have been supported by data on OA oxidation at high anodic potentials (Martinez-Huitle et al., Electrochim Acta 49:4027, 2004). To further enrich the picture, in the present paper, kinetic investigations were carried out at different mixed-oxides, Pt, GC and highly conductive, boron-doped diamond (BDD) electrodes, with either oxygen or fluorine at their surface

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Section: Pt and Glassy Carbonmentioning

confidence: 97%

Electroxidation of oxalic acid at different electrode materials

2010

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“…ME with CEM also enables synthesis of benzoquinone and hydroquinone [47],thus, obtaining trimethylhydroquinone from mesitylene [48] and p-anisidine by reduction of nitrobenzene in acidic methanol [49]. Replacement of porous separators with CEMs also prevented the migration of oxalate and glyoxalate anions to the anode and enabled a quantitative reduction of oxalic acid to glyoxalic acid [50]. The use of AEM in the above process prevented a migration of cations to contaminate the anolyte and allowed maintenance of the constant chloride concentration in the anodic compartment [51].…”

Section: Electromembrane Synthesis By Mementioning

confidence: 99%

Ion-exchange membranes in chemical synthesis – a review

Jaroszek

Dydo

2016

Open Chemistry

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Abstract:The applicability of ion-exchange membranes (IEMs) in chemical synthesis was discussed based on the existing literature. At first, a brief description of properties and structures of commercially available ion-exchange membranes was provided. Then, the IEM-based synthesis methods reported in the literature were summarized, and areas of their application were discussed. The methods in question, namely: membrane electrolysis, electro-electrodialysis, electrodialysis metathesis, ionsubstitution electrodialysis and electrodialysis with bipolar membrane, were found to be applicable for a number of organic and inorganic syntheses and acid/base production or recovery processes, which can be conducted in aqueous and non-aqueous solvents. The number and the quality of the scientific reports found indicate a great potential for IEMs in chemical synthesis.

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“…31,32 In this experiment, the electro-oxidation of H2C2O4 involves the step of the preliminary adsorption of H2C2O4 on the metal nanoparticles:…”

Section: Electrochemical Oxidation Of Oamentioning

confidence: 99%

“…When the experiment was carried out in 0.1 M H2SO4, a fast voltammetric response to OA oxidation could be obtained, but the current peak was lower than that in HClO4, which is in accordance with the Pt electrocatalytic activity being higher in perchloric than in sulfuric acid. 2,31,32 As a result, 0.1 M HClO4 was selected as the supporting electrolyte. Figure 4 displayed the DPV response of the PtPdNCs/ RGO-GCE towards the increasing concentrations of OA under the experimental conditions.…”

Section: Analytical Performance Of the Electrochemical Sensor For Oa mentioning

confidence: 99%

Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid

Cai

Li²,

Zhao³

et al. 2015

ANAL. SCI.

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A novel non-enzymatic oxalic acid (OA) sensor was developed using a nanocrystal PtPd loaded reduced graphene nanosheets (PtPdNCs/RGO)-modified electrode. PtPdNCs/RGO were successfully achieved by a facile, one-step and template-free method, in which PtPd nanoparticles with 100 nm-scale were assembled from polyhedral PtPd nanocrystals of various shapes and dispersed on the graphene nanosheets. Resulting PtPdNCs/RGO were characterized and used for PtPdNCs/RGO-modified electrodes. Electrochemical oxidation of OA on the modified electrode was investigated by cyclic voltammetry and differential pulse voltammetry (DPV). Well-defined peaks of OA oxidation could be obtained using an electrode that indicated its high electrochemical activity. The concentration of OA and the current responses could be obtained in the ranges of 0.5 -10 and 10 -35 mM with correlation coefficients of 0.9994 and 0.9952; the detection limit (S/N = 3) was found to be 0.05 mM. The modified electrode presented good characteristics in terms of both stability and reproducibility, promising its applicability in practical analysis.

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Catalytic and electrocatalytic oxidation of oxalic acid in aqueous solutions of different compositions

Cited by 28 publications

References 33 publications

Electroxidation of oxalic acid at different electrode materials

Electroxidation of oxalic acid at different electrode materials

Ion-exchange membranes in chemical synthesis – a review

Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid

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