Health & Environmental Research Online (HERO)


Print Feedback Export to File
4292347 
Journal Article 
FeCl3 Based Imidazolium Ionic Liquids as Novel Solvents for Extractive-Oxidative Desulfurization of Liquid Fuels 
Dharaskar, SA; Wasewar, KL; Varma, MN; Shende, DZ 
2015 
Yes 
Journal of Solution Chemistry
ISSN: 0095-9782
EISSN: 1572-8927 
44 
3-4 
652-668 
WOS:000353289100018 
FeCl3 based imidazolium ionic liquids were synthesized and employed as novel solvents in extractive desulfurization for removal of dibenzothiophene, thiophene, benzothiophene, 3-methylthiophene, and 4,6-dimethyldibenzothiophene in model fuel. FeCl3 based ionic liquids such as 1-butyl-3-methylimidazolium chloride iron chloride [C4MIM]Cl/FeCl3, 1-octyl-3-methylimidazolium chloride iron chloride, didecyldimethyl ammonium chloride iron chloride, ammonium tributyl-methyl chloride iron chloride, and trioctyl-methyl ammonium chloride iron chloride were synthesized and screened for extractive desulfurization of liquid fuel. Due to the redox properties of [C4MIM]Cl/FeCl3 with addition of hydrogen peroxide, dibenzothiophene removal can reach 92 % under mild reaction conditions, which is not only higher than simple extraction with ionic liquids, but better than other FeCl3 based ionic liquids under the same reaction conditions. The spent [C4MIM]Cl/FeCl3 can be recycled without regeneration for five times with only a slight decrease in activity. Also, desulfurization and multistage extraction of real fuels with [C4MIM]Cl/FeCl3 were studied. The data and results provided in the present paper provide significant insights into FeCl3 based imidazolium ionic liquids as novel solvents for desulfurization of liquid fuels. 
Ionic liquid; Novel solvent; [C4MIM]Cl/FeCl3; Desulfurization; Liquid fuel; Liquid-liquid extraction