Desulfurization of gasoline by extraction with N-alkyl-pyridinium-based ionic liquids
吡啶类离子液体在汽油萃取脱硫中的应用研究

Six N-alkyl-pyridinium-based ionic liquids,N-butyl-pyridinium nitrate(NO3),N-ethyl-pyridinium nitrate(NO3),N-butyl-pyridinium tetrafluoroborate(BF4),N-ethyl-pyridinium tetrafluoroborate(BF4),N-ethyl-pyridinium acetate(Ac),N-butyl-pyridinium acetate(Ac) were prepared and tested in the extraction desulfurization of gasoline.It is found that BF4 has the best effect on the selective removal of sulfur-containing compounds from gasoline at room temperature among these ionic liquids.The extraction rate of BF4 is 45.5%.The desulfurization effect of BF is the lowest.The used ionic liquids can be regenerated by rotary evaporation or re-extraction using tetrachloro-methane.