聚合离子液体多孔材料的制备及其在CO2捕集中的应用基础研究

项目名称： 聚合离子液体多孔材料的制备及其在CO2捕集中的应用基础研究

项目编号： No.21206008

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 化学工程及工业化学

项目作者： 张傑

作者单位： 北京化工大学

项目金额： 25万元

中文摘要： 设计并合成带有不同结构取代基的咪唑型、吡啶型、季铵盐型和季磷盐型可聚合离子液体单体，并对其阴阳离子进行氨基功能化，通过这些离子液体单体上可聚合片断实现单体的自由基聚合。在聚合中，通过改变单体结构和聚合条件，使聚合离子液体通过自组装形成具有一定孔结构的固体材料；进而，通过在聚合中引入CO2作为致孔剂，使其与离子液体单体上的氨基基团作用生成氨基甲酸盐，聚合离子液体形成后再除去CO2的方法制备多孔聚合离子液体。以NMR、FTIR和BET等手段对所得多孔氨基功能化聚合离子液体的孔结构等物化性能进行表征，从而得到阴阳离子的化学组成、单体侧链的碳链长度与多孔聚合离子液体孔道结构以及物化性质的对应关系，阐明其内在机理。以CO2捕集性能作为多孔聚合离子液体性能的评价手段，测定所得氨基功能化多孔聚合离子液体捕集CO2的性能，并依此调整单体结构及合成条件，建立合成多孔聚合离子液体材料的一般方法和相应理论。

中文关键词： 聚合离子液体；多孔材料；二氧化碳；捕集；功能化

英文摘要： In this proposal, the polymerizable monomers of imidazole, pyridine, quaternary-N and quaternary-P type ionic liquids with different substituents are designed and prepared. The cations and anions of the ionic liquids are functionalized with amino group. Then, these polymerizable ionic liquid monomers are polymerized via the C=C polymerization with free radical method. In the polymerization process, the poly(ionic liquid)s with such pore structure will be formed through the self-assembly of the branched chain under different reaction conditions and chemical structure of the monomers. Furthermore, CO2 is introduced into the reaction system in the polymerization as the porogen. CO2 reacts with the amino group on the cations or anions of the ionic liquid monomers to form the carbamate, and then the carbamate are decomposed under certain temperature and pressure, thus the porous poly(ionic liquid)s with amino group are prepared. The physical and chemical properties (i.e. pore structure) of the prepared porous poly(ionic liquid)s are characterized with different methods (i.e. NMR, FTIR, BET etc)，in order to investigate the corresponding relations between the chemical structure of the monomers, the branched chain structure and the pore properties and the physical and chemical properties, moreover, to clarify the inner

英文关键词： poly ionic liquid；porous material；carbon dioxide；capture；functionalization