多酸型离子液体可控合成新型介孔材料及其催化氧化燃油脱硫的研究

项目名称： 多酸型离子液体可控合成新型介孔材料及其催化氧化燃油脱硫的研究

项目编号： No.21276117

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 化学工业

项目作者： 李华明

作者单位： 江苏大学

项目金额： 85万元

中文摘要： 温和条件下深度脱除燃油中的有机硫一直是非常重要的研究课题，本课题拟设计吡啶盐、季铵盐、季磷盐和咪唑盐与钨、钼酸盐组装构建新型多酸型离子液体，再以多酸型离子液体作模板剂和反应源，原位可控构建金属(钨、钼)氧化物负载型硅基介孔材料，在过氧化氢作用下，考察其吸附/催化氧化脱除燃油中有机硫。调控多酸型离子液体阳离子和阴离子，总结其对负载型介孔材料的孔型、孔径、孔容和吸附/催化活性的影响规律；通过构效关系的研究，实现对燃油中噻吩及其衍生物的最佳脱除效果；运用原位谱学研究负载型介孔材料的吸附/催化脱硫机理，关联其组成、结构与催化性能，为负载型介孔材料的可控合成和应用提供理论依据。在燃油氧化脱硫反应中，这类新型负载型介孔材料能将吸附和催化功能集于一体。因此，该研究工作的开展，不仅可以丰富多酸型离子液体的类型，建立以多酸型离子液体可控合成负载型介孔材料的新方法，实现深度脱除燃油中有机硫的目标。

中文关键词： 多酸型离子液体；介孔材料；多相催化；氧化脱硫；

英文摘要： It is an important research topic of deep desulfurization of fuels under ambient conditions. In this project, pyridinium salts， quaternary ammonium salts, quaternary phosphonium salts and imidazole salts are employed and combined with polyoxometalates to assemble novel polyoxometalate-based ionic liquids, which were used as template to one-pot synthesis of active species-containing mesoporous material. The activity on adsorption and oxidative desulfurization of fuels in the pressence of clean oxidizing agent was investigated. Through changing the specific cations and anions, the rule of shape, diameter, adsorption capacity and catalytic activity of active species-containing mesoporous material could be built. The composition and structure of ILs associated with catalytic activities, which achieved the optimal sulfur removal. With situ-spectrum characterizing methods, the mechanism of desulfurization could be studied. By structure-activity relationship research, we could provide theoretical ground in controlled-synthesis and application. In the process of oxidative desulfurization, these novel mesoporous materials possessed the feature of adsorbent and catalyst. So this research of new oxidative desulfurization method not only extends the function of polyoxometalate-based ionic liquids, but also provides a new me

英文关键词： polyoxometallate-based ionic liquids；mesoporous materials；heterogeneous catalysis；oxidative desulfurization；