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

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...

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Bibliographic Details
Published inCatalysts Vol. 8; no. 9; p. 344
Main Authors Houda, Sara, Lancelot, Christine, Blanchard, Pascal, Poinel, Line, Lamonier, Carole
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2018
MDPI
Subjects
Adsorption
Boiling points
Catalysis
Catalysts
Catalytic oxidation
Chemical reactions
Chemical Sciences
Clean fuels
Crude oil
Desulfurizing
Efficiency
Emissions control
Energy
Environmental regulations
Fossil fuels
heavy oil
Hydrodesulfurization
Hydrogen
Ionic liquids
Ions
Organic chemistry
oxidative desulfurization
Petroleum refineries
Solvents
Sulfur
Sulfur content
ultrasonic process
Viability
France
ultrasonic process
ionic liquids
heavy oil
oxidative desulfurization
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Summary: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.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal8090344