2009
DOI: 10.1002/cssc.200900142
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Ionic Liquids in Refinery Desulfurization: Comparison between Biphasic and Supported Ionic Liquid Phase Suspension Processes

Abstract: The desulfurization of fuel compounds in the presence of ionic liquids is reported. For this purpose, the desulfurization efficiency of a variety of imidazolium phosphate ionic liquids has been tested. Dibenzothiophene/dodecane and butylmercaptan/decane mixtures were used as model systems. Single-stage extractions reduced the sulfur content from 500 ppm to 200 ppm. In multistage extractions the sulfur content could be lowered to less than 10 ppm within seven stages. Regeneration of the ionic liquid was achieve… Show more

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Cited by 72 publications
(39 citation statements)
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“…As to our knowledge, solid supported ionic liquid has been studied in desulfurization [7] and also as a catalyst, for example in the Friedel-Crafts reactions, however, for gas separation, ionic liquids are usually supported onto membrane to increase the permeability of gas through the membrane [8]. Therefore, in this research, ionic liquid was supported onto silica dioxide as to provide more available data for porous solid supported ionic liquids in the gas separation application.…”
Section: Introductionmentioning
confidence: 99%
“…As to our knowledge, solid supported ionic liquid has been studied in desulfurization [7] and also as a catalyst, for example in the Friedel-Crafts reactions, however, for gas separation, ionic liquids are usually supported onto membrane to increase the permeability of gas through the membrane [8]. Therefore, in this research, ionic liquid was supported onto silica dioxide as to provide more available data for porous solid supported ionic liquids in the gas separation application.…”
Section: Introductionmentioning
confidence: 99%
“…Imidazolium-based ionic liquids were prepared from the bromides of 1-n-butyl-, 1-n-hexyl-, and 1-n-octyl-3-methyl imidazolium, [C 4 6 ], of 1-n-hexyl-3-methyl imidazolium as reported previously [11]. 1-Ethyl-3-methyl imidazolium ethylsulfate, [12].…”
Section: Experimental 21 Materialsmentioning
confidence: 99%
“…Methods based on solvent extraction have been proposed [4,5] with the advantages of low energy cost, elimination of hydrogen usage, retention of the chemical structures of the fuels, and no special equipment requirements [5]. Recently, desulfurization and denitrogenation have been investigated with solvent extraction [6][7][8] and supported liquid membranes (SLM) [9,10] using ionic liquids.…”
Section: Introductionmentioning
confidence: 99%
“…All latter approaches use biphasic extraction where surface area is poor, mass-transfer issues should be important and require a lot of ILs recycling steps. Recently, the use of ILs deposited on a solid, known as supported ionic liquid phase (SILP), incremented significantly the desulfurization efficiency by augmenting surface area, diminishing mass-transfer problems and allowing a continuous process (Kuhlmann et al, 2009). Careful attention must be paid to ILs leaching or saturation during process, but ILs chemical bonding to support as well as ILs-support reactivation are subjects that must be further studied.…”
Section: Petroleum Refiningmentioning
confidence: 99%