title: Extraction of S- and N-compounds from the mixture of hydrocarbons by ionic liquids as selective solvents.
abstract: Liquid-liquid extraction is an alternative method that can be used for desulfurization and denitrification of gasoline and diesel fuels. Recent approaches employ different ionic liquids as selective solvents, due to their general immiscibility with gasoline and diesel, negligible vapor pressure, and high selectivity to sulfur- and nitrogen-containing compounds. For that reason, five imidazolium-based ionic liquids and one pyridinium-based ionic liquid were selected for extraction of thiophene, dibenzothiophene, and pyridine from two model solutions. The influences of hydrodynamic conditions, mass ratio, and number of stages were investigated. Increasing the mass ratio of ionic liquid/model fuel and multistage extraction promotes the desulfurization and denitrification abilities of the examined ionic liquids. All selected ionic liquids can be reused and regenerated by means of vacuum evaporation.
authors.affiliation: INA-Industrija Nafte d.d., Avenija Veceslava Holjevca 10, 10000 Zagreb, Croatia.
authors.forename: Beata
authors.initials: B
authors.lastname: Gabrić
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Sander
authors.forename: Marina
authors.initials: M
authors.lastname: Cvjetko Bubalo
authors.forename: Dejan
authors.initials: D
authors.lastname: Macut
mesh_terms: D045424:Complex Mixtures / Q000737:chemistry / Q000302:isolation & purification*; D006838:Hydrocarbons / Q000737:chemistry* / Q000302:isolation & purification*; D052578:Ionic Liquids / Q000737:chemistry*; D059625:Liquid-Liquid Extraction / Q000379:methods*; D017672:Nitrogen Compounds / Q000737:chemistry / Q000302:isolation & purification*; D012997:Solvents / Q000737:chemistry; D013457:Sulfur Compounds / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D045424:Complex Mixtures; D006838:Hydrocarbons; D052578:Ionic Liquids; D017672:Nitrogen Compounds; D012997:Solvents; D013457:Sulfur Compounds