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2015, Volume 9, Issue 3

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Frontiers of Chemical Science and Engineering >> 2015, Volume 9, Issue 3 doi: 10.1007/s11705-015-1528-0

Oxidative desulfurization of fuels using ionic liquids: A review? ?

1. Department of Chemistry and Forensic Science, Savannah State University, Savannah, GA 31404, USA.2. Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA

Accepted: 2015-09-09 Available online: 2015-09-30
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Abstract

Extractive oxidation, wherein aromatic sulfur-containing compounds are extracted and subsequently oxidized to their corresponding sulfones, has proven to be one of the most effective desulfurization methods for producing ultra-low sulfur content fuels. As non-volatile and highly designable solvents, ionic liquids (ILs) have attracted considerable attention for the oxidative desulfurization of fuels. In this review, we systematically discuss the utility of ILs in catalytic and extractive oxidation, including their role as extractant, catalyst, or both. We also discuss the challenges facing the use of ILs in this regard, including their relatively high cost and excessive viscosity, as well as their efficiency and stability as catalyst.

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