柴油脱硫是降低环境污染的一项重要技术，而超深度脱硫一直是该技术的难点。本课题拟以中空碳球嫁接有机硅烷季铵盐为氢键受体，可活化氧气的N-羟基亚胺为氢键供体，提出构建新型的功能化多孔低共熔溶剂脱硫体系，从低共熔溶剂的吸附性能和活化氧气的能力两方面进行强化，从而实现柴油的超深度脱硫。研究不同直径和杂原子掺杂的中空碳球对氧气和含硫底物吸附性能的影响，通过调变氢键供体上不同的取代基链长和类型从而调节低共熔溶剂活化氧气的能力。运用原位表征和理论计算的方法研究多孔低共熔溶剂的活化氧气氧化脱硫的作用机理，考察其稳定性和循环使用性能。通过本项目的研究，期待可总结一类新型多孔低共熔溶剂构建规律，不仅丰富了低共熔溶剂的种类，同时可将其应用其他萃取分离和催化领域。

Desulfurization of diesel is an important technology to reduce environmental pollution, and ultra-deep desulfurization has always been difficult to achieve. In this project, the porous deep eutectic solvents (PDESs) are prepared with quaternary ammonium salts modified with hollow carbon spheres as hydrogen bond acceptors, and N-hydroxyimides as hydrogen bond donors. Ultra-deep desulfurization of the diesel can be achieved by changing the adsorption capacity and the ability to activate oxygen of PDESs. The effects of hollow carbon spheres with different sizes and different doped elements are studied on the adsorption properties of oxygen and sulfur-containing substrates. The activation of oxygen can be adjusted by modulating the length and type of different substituent groups on the hydrogen bond donor. In-situ characterization and theoretical calculations will be used to study the mechanism of oxidative desulfurization by PDESs, and their stability and recycling performance will be investigated. Through the research of this project, it is expected that the new type of porous deep eutectic solvents can be constructed, which not only enriches the types of deep eutectic solvents, but also can be applied to other fields such as extraction and catalysis.