TY - JOUR
T1 - Facile Route for Fuel Desulfurization Using Generated Superoxide Ion in Ionic Liquids
AU - Hayyan, Maan
AU - Ibrahim, Muna Hassan
AU - Hayyan, Adeeb
AU - Alnashef, Inas M.
AU - Alakrach, Abdulkader M.
AU - Hashim, Mohd Ali
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/12/16
Y1 - 2015/12/16
N2 - In this study, a novel desulfurization method was conducted using the superoxide ion (O2-) generated chemically in four ionic liquids (ILs): 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, N-methoxyethyl-N-methylmorpholinium bis(trifluoromethylsulfonyl)imide, 1-(2-methoxyethyl)-1-methylpiperidinium tris(pentafluoroethyl)trifluorophosphate, and 4-(2-methoxyethyl)-4-methylmorpholinium tris(pentafluoroethyl)trifluorophosphate. Remarkably, it was found that O2- can convert the sulfur compounds (i.e., thiophene and 2-methylthiophene) dissolved in these ILs. The products of the conversion were identified as H2O, CO2, and SO3. The conversion percentage ranged from 35 to 99% for thiophene and 20 to 96% for 2-methylthiophene. In addition, a mechanism was proposed for this conversion. Furthermore, the effect of temperature on this reaction was studied and the solubility of sulfur compounds in these ILs was determined. The ILs did not only behave as media for the generation of O2-, but they also possessed catalytic activity to accelerate the reaction rate between O2- and substrates.
AB - In this study, a novel desulfurization method was conducted using the superoxide ion (O2-) generated chemically in four ionic liquids (ILs): 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, N-methoxyethyl-N-methylmorpholinium bis(trifluoromethylsulfonyl)imide, 1-(2-methoxyethyl)-1-methylpiperidinium tris(pentafluoroethyl)trifluorophosphate, and 4-(2-methoxyethyl)-4-methylmorpholinium tris(pentafluoroethyl)trifluorophosphate. Remarkably, it was found that O2- can convert the sulfur compounds (i.e., thiophene and 2-methylthiophene) dissolved in these ILs. The products of the conversion were identified as H2O, CO2, and SO3. The conversion percentage ranged from 35 to 99% for thiophene and 20 to 96% for 2-methylthiophene. In addition, a mechanism was proposed for this conversion. Furthermore, the effect of temperature on this reaction was studied and the solubility of sulfur compounds in these ILs was determined. The ILs did not only behave as media for the generation of O2-, but they also possessed catalytic activity to accelerate the reaction rate between O2- and substrates.
UR - https://www.scopus.com/pages/publications/84950258413
U2 - 10.1021/acs.iecr.5b03427
DO - 10.1021/acs.iecr.5b03427
M3 - Article
AN - SCOPUS:84950258413
SN - 0888-5885
VL - 54
SP - 12263
EP - 12269
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 49
ER -