离子液体萃取耦合过氧钒配合物催化氧化燃油脱硫

摘要

Oxidative desulfurization of fuel catalyzed by peroxovanadium complex in ionic liquids asextractants was reported. Under the optimal conditions, the removal of dibenzothiophene in a model oilreached 98. 8% with l-butyl-3-methylimidazolium tetrafluoroborate as the extractant. The catalyticsystem could be recycled for 5 times without obvious decrease of the activity. The results showed thatthe deep desulfurization could be achieved by the catalytic oxidation with the ionic liquid as theextractant.%燃油中的硫化物燃烧后产生的SOx严重威胁着人类的健康.目前,工业上的脱硫技术主要为加氢脱硫( HDS)技术,但对于二苯并噻吩(DBT)及其衍生物,HDS技术很难将它们除去.萃取耦合氧化脱硫法被认为是一种具有很好应用前景的深度脱硫方法[1-4],离子液体由于其独特的性质非常适合在萃取脱硫过程中使用[5-6],以H202为氧源耦合离子液体催化氧化脱硫体系尤其引人关注[7-8].