Test of vanadium pentoxide as anode for the electrooxidation of tolueneA theoretical approach of the electrode process

D’Elia, Luis F.; Rincón, Luís; Ortíz, Rina

doi:10.1016/s0013-4686(04)00844-8

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…The V(IV)/V(III) redox couple has been employed in the construction of a redox type fuel cell [113]. V 2 O 5 has been tested as anode for electrooxidation of toluene [114] and has served as a support for platinum to achieve oxidation of methanol [115]. It was shown that a carbon-supported composite of Pt and V 2 O 5 exhibits higher electrocatalytic activity for the oxidation of methanol relative to simple carbon-supported Pt.…”

Section: Application Of Metal Oxides As Active Matricesmentioning

confidence: 99%

Electrocatalytic oxidation of small organic molecules in acid medium: Enhancement of activity of noble metal nanoparticles and their alloys by supporting or modifying them with metal oxides

Kulesza

Pieta

Rutkowska

et al. 2013

Electrochimica Acta

107

114

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Different approaches to enhancement of electrocatalytic activity of noble metal nanoparticles during oxidation of small organic molecules (namely potential fuels for low-temperature fuel cells such as methanol, ethanol and formic acid) are described. A physical approach to the increase of activity of catalytic nanoparticles (e.g. platinum or palladium) involves nanostructuring to obtain highly dispersed systems of high surface area. Recently, the feasibility of enhancing activity of noble metal systems through the formation of bimetallic (e.g. PtRu, PtSn, and PdAu) or even more complex (e.g. PtRuW, PtRuSn) alloys has been demonstrated. In addition to possible changes in the electronic properties of alloys, specific interactions between metals as well as chemical reactivity of the added components have been postulated. We address and emphasize here the possibility of utilization of noble metal and alloyed nanoparticles supported on robust but reactive high surface area metal oxides (e.g. WO3, MoO3, TiO2, ZrO2, V2O5, and CeO2) in oxidative electrocatalysis. This paper concerns the way in which certain inorganic oxides and oxo species can act effectively as supports for noble metal nanoparticles or their alloys during electrocatalytic oxidation of hydrogen and representative organic fuels. Among important issues are possible changes in the morphology and dispersion, as well as specific interactions leading to the improved chemisorptive and catalytic properties in addition to the feasibility of long time operation of the discussed systems.

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Section: Application Of Metal Oxides As Active Matricesmentioning

confidence: 99%

Electrocatalytic oxidation of small organic molecules in acid medium: Enhancement of activity of noble metal nanoparticles and their alloys by supporting or modifying them with metal oxides

Kulesza

Pieta

Rutkowska

et al. 2013

Electrochimica Acta

107

114

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“…The aim of the present investigation is the study of the nitrogen ion distribution deriving from mineralization of nitrogen-containing compounds during direct electrooxidation treatment of a range of organic molecules over conductive metal oxide anodes in a divided electrochemical reactor. Although anodes with a high overpotential for oxygen evolution (i.e., doped SnO 2 or doped diamond) present higher current efficiency in conversion processes, the use of conductive metal oxide anodes (including mixed oxides) was reported in many scientific works − owing to their availability, synthesis reproducibility, and dimensional stability. This last factor is crucial in wastewater treatment applications.…”

Section: Introductionmentioning

confidence: 99%

Fate of Organic Nitrogen during Electrooxidation over Conductive Metal Oxide Anodes

Giulio

Jara

Fino

et al. 2007

Ind. Eng. Chem. Res.

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The electrooxidation of nitrogen-containing molecules (urea, reactive dye blue 4, acetonitrile, formamide, guanidine, and pyridazine) over Pt−Ti and Ti/RuO2 anodes is investigated. The product distribution of the electrochemical mineralization of nitrogen is monitored. Nitrogen mineralization generally leads to inorganic pollutants (NH3/NH4 + and/or nitrite and nitrate ions). Amidic and aminic compounds were found to react according to both homogeneous (acid hydrolysis) and heterogeneous (direct electrooxidation) pathways, with a rate depending on the original state of oxidation of nitrogen. Heterocyclic and multiple-bond carbon−nitrogen molecules were converted but with negligible mineralization of nitrogen due to the stability of their first oxidation intermediates. The obtained results can be useful for the design of further treatment routes after electrooxidation or the definition of simultaneous strategies for inorganic pollutants elimination.

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Mass and electron-transfer conditions for the electrochemical oxidation of hydrogen sulfide at vanadium pentoxide film modified electrode

Khudaish

2008

Sensors and Actuators B: Chemical

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Test of vanadium pentoxide as anode for the electrooxidation of tolueneA theoretical approach of the electrode process

Cited by 3 publications

References 16 publications

Electrocatalytic oxidation of small organic molecules in acid medium: Enhancement of activity of noble metal nanoparticles and their alloys by supporting or modifying them with metal oxides

Electrocatalytic oxidation of small organic molecules in acid medium: Enhancement of activity of noble metal nanoparticles and their alloys by supporting or modifying them with metal oxides

Fate of Organic Nitrogen during Electrooxidation over Conductive Metal Oxide Anodes

Mass and electron-transfer conditions for the electrochemical oxidation of hydrogen sulfide at vanadium pentoxide film modified electrode

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