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Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review

Abstract : The demand for clean fuels is increasing throughout the world, with more stringent environmental regulations for transportation fuels including marine fuels, particularly regarding their sulfur content. Moreover, the quality of crude oil and derived petroleum cuts is getting lower while fossil fuels are still in high demand. Heavy oils are characterized by high sulfur content where most sulfur is found in bulky thiophenic structures difficult to remove using conventional high pressure hydrodesulfurization process. However they appeared more reactive in oxidative desulfurization (ODS) process, carried out at mild conditions without hydrogen pressure. This review focuses for the first time on the heavy fuels initially containing more than 0.5 wt.%S and upgraded by the ODS process. Different attractive approaches of the literature towards ODS are reported using homogeneous and heterogeneous catalysis. Recent developments in ODS assisted with ultrasound technology and the use of ionic liquid to enhance ODS efficiency will be fully detailed and discussed to better understand their viability when applied to high sulfur content, high viscosity, and high boiling point feeds.
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Soumis le : jeudi 18 mars 2021 - 10:30:19
Dernière modification le : mercredi 3 novembre 2021 - 09:58:58
Archivage à long terme le : : lundi 21 juin 2021 - 08:45:29


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Sarah Houda, Christine Lancelot, Pascal Blanchard, Line Poinel, Carole Lamonier. Oxidative Desulfurization of Heavy Oils with High Sulfur Content: A Review. Catalysts, MDPI, 2018, 8 (9), pp.344. ⟨10.3390/catal8090344⟩. ⟨hal-03172984⟩



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