Electrosynthesis of trimethylorthoformate on BDD electrodes

Christos Comninellis, Romain Fardel
Springer Netherlands, 2006
Journal paper

The anodic methoxylation of formaldehyde dimethylacetal (FADMA) to trimethylorthoformate (TMOF) in basic methanol was investigated on boron-doped diamond (BDD) electrodes. Cyclic voltammetry and preparative electrolysis have shown that FADMA is electrochem. inactive in the solvent stability region; nevertheless FADMA can be oxidized in the potential region of methanol oxidn. A reaction scheme involving intermediates of methanol oxidn. (methoxy radicals) has been proposed. [on SciFinder (R)]

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Christos Comninellis, Romain Fardel
Springer Netherlands, 2006
Journal paper

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https://infoscience.epfl.ch/record/79924?ln=en

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Electrode

An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or air). Electrodes are essential parts of batteries

Cyclic voltammetry

In electrochemistry, cyclic voltammetry (CV) is a type of potentiodynamic measurement. In a cyclic voltammetry experiment, the working electrode potential is ramped linearly versus time. Unlike in l

Electric potential

The electric potential (also called the electric field potential, potential drop, the electrostatic potential) is defined as the amount of work energy needed per unit of electric charge to move this

Electrochemical oxidation of ethylenediaminetetraacetic acid (EDTA) on BDD electrodes: Application to wastewater treatment

Christos Comninellis, Ilaria Duo, Lassine Ouattara

The electrochem. oxidn. of EDTA was studied at boron-doped diamond (BDD) electrodes. Cyclic voltammetry in the potential region of water stability showed that EDTA is oxidized in an irreversible 2-electron-transfer mechanism. No fouling phenomena were noticed on the electrode surface. At high anode potential, an oxidn. mechanism of EDTA involving hydroxyl radicals, formed during water discharge, was proposed. The model previously developed for org. oxidn. at nonactive anodes was successfully used in order to predict the trends of COD and instantaneous current efficiency (ICE) during EDTA oxidn. on BDD electrodes. Bulk electrolyzes were performed under different regimes. The very good fit between the exptl. results and theor. values confirmed that EDTA oxidn. at the BDD electrode in the potential region of electrolyte decompn. was a fast reaction. [on SciFinder (R)]

2003

Anodic oxidation of 2-naphthol at boron-doped diamond electrodes

Christos Comninellis, Pierre-Alain Michaud, Marco Panizza

The anodic oxidn. of 2-naphthol in acid media was studied at a synthetic boron-doped diamond thin film electrode (BDD) using cyclic voltammetry and bulk electrolysis. The results showed that in the potential region, where the supporting electrolyte is stable, reactions involving simple electron transfer, such as oxidn. of 2-naphthol to naphthoxy radical and 1,4-naphthoquinone occur. Polymeric materials, which lead to electrode fouling, are also formed in this potential region. Electrolysis at high pos. potentials in the region of electrolyte decompn. causes complex oxidn. reactions by electrogenerated hydroxyl radicals leading to the complete incineration of 2-naphthol. Electrode fouling is inhibited under these conditions. The exptl. results were also compared with a theor. model. This model is based on the assumption that the rate of the anodic oxidn. of 2-naphthol is a fast reaction and it is under diffusion control. [on SciFinder (R)]

2001

Electrochemical oxidation of 3-methylpyridine at a boron-doped diamond electrode: application to electroorganic synthesis and wastewater treatment

Christos Comninellis, Pierre-Alain Michaud, Marco Panizza

The electrochem. oxidn. of 3-methylpyridine (3-MP) at synthetic boron-doped diamond (BDD) thin film electrode was studied in acid media by cyclic voltammetry and bulk electrolysis. The results showed that in the potential region of water stability there can occur direct electron transfer reactions on BDD surface that result in electrode fouling due to the formation of a polymeric film on its surface. While during electrolyzes in the potential region of water decompn., indirect oxidn. reactions can take place by electrogenerated active intermediates, probably hydroxyl radicals that can avoid electrode fouling. Depending on the values of applied c.d., it is possible to obtain the partial oxidn. of 3-MP to nicotinic acid or the complete combustion of 3-MP to CO2. [on SciFinder (R)]

2001