Electrochemical oxidation of dibenzothiophene compounds on BDD electrode in acetonitrile–water medium
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2019-05-23 |
| Journal | Journal of Electroanalytical Chemistry |
| Authors | Omar Ornelas-Dávila, Leticia Lacalle-Bergeron, P. Ruiz Gutiérrez, M.M. Dávila Jiménez, Ignasi Sirés |
| Institutions | Benemérita Universidad Autónoma de Puebla, Universitat de Barcelona |
| Citations | 12 |
Abstract
Section titled “Abstract”The electrochemical oxidation of dibenzothiophene and two derivatives, namely 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene, was investigated either separately or as a mixture, on a BDD anode in a miscible acetonitrile (87.5% v/v)-water (12.5% v/v, 0.01 M NaNO3) solution. Linear sweep voltammetry, cyclic voltammetry, chronoamperometry and bulk electrolysis under potentiostatic conditions suggested the probable occurrence of two pathways: direct electrochemical oxidation and indirect reaction with hydroxyl radicals and other reactive oxygen species formed at the BDD anode surface during water discharge. The products extracted upon electrolysis at 1.5 and 2.0 V vs. SCE were analyzed by Fourier-transform infrared spectroscopy, gas chromatography-mass spectrometry and ultra-high performance liquid chromatography coupled to electrospray ionization and quadrupole time-of-flight mass spectrometry (UHPLC-ESI-Q-TOF-MS). The main molecules identified were the corresponding sulfoxides or sulfones, depending on the applied anodic potential. Possible oxidation routes for the dibenzothiophene compounds are proposed.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2003 - An overview of new approaches to deep desulfurization for ultra-clean gasoline, diesel fuel and jet fuel [Crossref]
- 2004 - Search for an efficient 4,6-DMDBT hydrodesulfurization catalyst. A review of recent studies [Crossref]
- 2012 - R & D in oxidative desulfurization of fuels technologies: from chemistry to patents [Crossref]
- 2014 - Deep oxidative desulfurization of liquid fuels [Crossref]
- 2017 - Recent advances in new catalysts for fuel oil desulfurization [Crossref]
- 2019 - A comprehensive review on catalytic oxidative desulfurization of liquid fuel oil [Crossref]
- 2015 - Deep oxidative desulfurization of dibenzothiophene using low-temperature-mediated titanium dioxide catalyst in ionic liquids [Crossref]
- 2018 - Catalytic oxidative/extractive desulfurization of model oil using transition metal substituted phosphomolybdates-based ionic liquids [Crossref]
- 2013 - Investigation of influential parameters in deep oxidative desulfurization of dibenzothiophene with hydrogen peroxide and formic acid [Crossref]
- 2001 - Oxidation reactivities of dibenzothiophenes in polyoxometalate/H2O2 and formic acid/H2O2 systems [Crossref]