随着环保要求日益严格，燃油的超深度脱硫成为世界性函待解决的问题。本项目提出了基于酸性功能型离子液体“氧化-萃取”一锅法超深度脱硫过程。选择具有较低的PKa值的酸阴离子调控其催化性能，选择具有芳香性含氮杂环类化合物为阳离子调控其萃取性能，设计和合成兼具催化和萃取性能的酸性功能型离子液体，并探究其作为催化剂和萃取剂的基本规律和内在机理。系统考察酸性功能型离子液体氧化-萃取一锅法脱硫过程体系物性、不同操作条件等影响因素，研究过程的热力学和动力学性质，探究过程的稳定性和可重复性，确定高效脱硫的优化工艺条件，提高脱硫效率。通过量子化学计算和分子模拟手段，研究酸性功能型离子液体“氧化-萃取”一锅法脱硫过程机理及其过程强化手段，最终建立具有自主知识产权、绿色高效的基于酸性功能型离子液体“氧化-萃取”一锅法超深度脱硫的完整工艺路线，为工业化应用提供理论基础。

With the increasingly stringent environmental requirements, the ultra-deep desulfurization of fuel oil has become the worldwide urgent problems to be solved. “One Pot” ultra-deep desulfurization of fuel oil by oxidation-extraction process with acidic functionalized ionic liquids was proposed in this project. Brönsted acid anion with lower pKa value and aromatic nitrogenous heterocyclic cation will be selected to adjust the catalytic and extraction properties of ionic liquid. The acidic functionalized ionic liquids with both catalytic and extraction abilities will be designed and synthesized and the basic rules and internal mechanism of the ionic liquids used as catalyst and extractant will be explored. The influences of system property and different operation conditions on one pot desulfurization process by oxidation-extraction with acidic functionalized ionic liquids, the thermal and kinetic properties, stability and reusability of the process will be investigated to determine the optimal process conditions of efficient desulfurization and increase desulfurization efficiency. The mechanism and intensification of one pot desulfurization process by oxidation-extraction process with acidic functionalized ionic liquids will be studied by quantum chemical calculation and molecular simulation. Finally, the complete process route of “One Pot” ultra-deep desulfurization of fuel oil by oxidation-extraction process with acidic functionalized ionic liquids will be established.