Four BrØsted acid ionic liquids(ILS)[MMP][DMP],[MEP][DEP],[HMP][DMP]and[HEP][DEP]were syn-thesized and used as extractants for desulfurization of aromatic sulfur compounds in model oil.The mutual solubil-ity of f...Four BrØsted acid ionic liquids(ILS)[MMP][DMP],[MEP][DEP],[HMP][DMP]and[HEP][DEP]were syn-thesized and used as extractants for desulfurization of aromatic sulfur compounds in model oil.The mutual solubil-ity of four ILs were investigated.The extraction equilibrium of four ILs could be reached in as soon as 5 min and the extraction capability followed the order[MMP][DMP]>[MEP][DEP]>[HEP][DEP]>[HMP][DMP].The S extraction showed the highest efficiency under the conditions of 30℃,30 min and 1∶1(V/V)IL∶oil.Under the optimal condition,70.9%of thiophene(TS),76.9%of benzothiophene(BT)and 87.5%of dibenzothiophene(DBT)in n-octane could be efficiently removed by[MMP][DMP].The multiple extraction and regeneration performance of[MMP][DMP]for TS was also investigated and the results were satisfying.These results suggest that[MMP][DMP]has the best extraction capability and can serve as a promising solvent for extractive desulfurization of fuel oils.展开更多
基金We gratefully thank Nanjing University and Ministry of Education for the financial support of this project.
文摘Four BrØsted acid ionic liquids(ILS)[MMP][DMP],[MEP][DEP],[HMP][DMP]and[HEP][DEP]were syn-thesized and used as extractants for desulfurization of aromatic sulfur compounds in model oil.The mutual solubil-ity of four ILs were investigated.The extraction equilibrium of four ILs could be reached in as soon as 5 min and the extraction capability followed the order[MMP][DMP]>[MEP][DEP]>[HEP][DEP]>[HMP][DMP].The S extraction showed the highest efficiency under the conditions of 30℃,30 min and 1∶1(V/V)IL∶oil.Under the optimal condition,70.9%of thiophene(TS),76.9%of benzothiophene(BT)and 87.5%of dibenzothiophene(DBT)in n-octane could be efficiently removed by[MMP][DMP].The multiple extraction and regeneration performance of[MMP][DMP]for TS was also investigated and the results were satisfying.These results suggest that[MMP][DMP]has the best extraction capability and can serve as a promising solvent for extractive desulfurization of fuel oils.
