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Deep Desulfurization of Fossil Fuels by Air in the Absence of a Catalyst



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Desperately seeking desulfurization: Organic sulfur compounds (OSCs) in transportation fuels contribute to acid rain and can deactivate catalysts in automotive applications. A new catalyst-free method to convert OSCs into sulfones in lactones by air at 140 °C and atmospheric pressure has been developed which can be used in the removal of OSCs from oil fractions or as a post-treatment to remove refractory sulfur after standard hydrodesulfurization.