硅基介孔限域空间中离子液体的聚集结构和作用规律研究

项目名称： 硅基介孔限域空间中离子液体的聚集结构和作用规律研究

项目编号： No.21203248

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理化学

项目作者： 王楠楠

作者单位： 中国人民解放军国防科学技术大学

项目金额： 24万元

中文摘要： 硅基介孔材料和离子液体构建的复合材料在吸附、催化和分离等方面体现了较大的应用潜力，而目前国内外关于硅基介孔限域空间中离子液体的性质尤其是基团水平相互作用的报道较为有限。本项目拟采用吸附和硅氧烷基嫁接两种途径在SBA-15硅基介孔材料的孔道中引入离子液体，通过谱学、量热学等实验手段和理论计算研究限域空间中的离子-离子、离子-界面和离子-分子间的相互作用，在此基础上，对限域空间中离子液体的聚集结构进行描述，对离子液体各作用位点与典型官能团的作用规律进行总结。本项目以目前研究和应用最为广泛的烷基咪唑类和烷基吡啶类离子液体为研究对象，将在一维硅基介孔限域空间中离子液体的聚集结构、作用位点与典型官能团的作用规律，以及含固体体系的超额红外光谱处理方法等方面开展原创性研究工作。项目成果有助于进一步理解限域空间中离子液体的物理化学性质，也能够为离子液体-硅基介孔材料型新材料的设计和应用提供理论依据。

中文关键词： 离子液体；硅基介孔限域；聚集结构；作用规律；超额红外光谱

英文摘要： Composites composed by ordered mesoporous silica and ionic liquid show potential applications in adsorption,catalysis and separation. However, the research about the physicochemical properties of ionic liquids confined in mesoporous silica has not been studied in detail. In this work, ionic liquid will be introduced to the porouschannel of mesoporous silica SBA-15 by adsorption and surface grafting through siloxane-terminated ionic liquid. The aggregation states of ionic liquids confined in mesoporous silica SBA-15 will be studied by experiments such as spectroscopy and calorimetry, as well as theoretical calculation. Furthermore, the interaction between the interaction sites of ionic liquid confined in SBA-15 and the representative small organic molecules with typical functional group will be studied. The objects of this study includ imidazolium-based and pyridinium-based ionic liquids, which have received widely research and applications. The innovations of this study include the study about the aggregation states of ionic liquids confined in one-dimensional mesoporous silica and their interaction behavior with typical functional groups, as well as developing the excess infrared spectroscopy for the system containing solid materials. The conclusion of this work is important to understand the physicochemical pr

英文关键词： Ionic liquid；Confined in mesoporous silica；Aggregation；Interaction；Excess infrared spectroscopy