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The deep desulfurization of petroleum-based fuels using oxidative extraction processes has been hampered by the lack of suitable solvent systems and by the poor availability of inexpensive and efficient catalysts. As a strategy to address this limitation, the present study evaluates a number of hydrophilic and hydrophobic ionic liquids (ILs) for the oxidative extraction of dibenzothiophene (DBT) and...
A functional [C4mimCl]CoCl2 ionic liquid was prepared by directly mixing cobalt chloride (CoCl2) with 1-n-butyl-3-methylimidazolium chloride (C4mimCl). Oxone (KHSO5) was selected as an oxidizing agent and, together with [C4mimCl]CoCl2, formed an extraction/catalytic oxidation system for the desulfurization of fuels. Compared with the Fenton-like desulfurization systems, the oxone solid is cheaper,...
A phosphonium ionic liquid with glyceryl moiety was synthesized and used as an efficient extractant in the removal of sulfur compounds from a model liquid fuel. The effects of different parameters such as volume ratio, time, initial concentration, temperature and type of sulfur compound on the desulfurization efficiency were investigated. The reusability and the recyclability of the described ionic...
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