项目名称: 功能化介孔聚合物/离子液体支撑液膜的制备及其气体分离和稳定性研究
项目编号: No.21506238
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 数理科学和化学
项目作者: 谭明
作者单位: 中国科学院青岛生物能源与过程研究所
项目金额: 21万元
中文摘要: 离子液体支撑液膜对CO2同时具有较高的渗透通量和选择性,在CO2分离领域具有广阔的应用前景。但它存在稳定性低,分离性能还需进一步改进等问题。本项目拟在多孔Al2O3基底上构筑-NH2、 -COOH或-SO3H功能化的介孔聚合物层,并担载离子液体[MTBDH+][TFE-]、[P(C4)4][Gly]等得到功能化介孔聚合物/离子液体支撑液膜。通过合成方法的探索、介孔聚合物功能化设计、不同离子液体的使用,考察介孔聚合物孔径大小和分布、功能基团与离子液体之间的氢键力、离子液体种类和用量对支撑液膜CO2、N2、CH4分离性能和稳定性的影响,进而揭示支撑液膜渗透分离性能及稳定性和孔道特征、氢键力大小、气体在离子液体中的溶解度与扩散系数之间的关系,从而提高支撑液膜的分离性能和稳定性。本项目的开展将为支撑液膜基膜的构建提供新的思路,为高性能支撑液膜的制备奠定基础。
中文关键词: 气体分离膜;二氧化碳;支撑液膜;离子液体;介孔聚合物
英文摘要: Supported ionic liquid membrane has promising prospect of application in CO2 separation, owing to its high permeability and selectivity of CO2. However, existing supported membrane has the disadvantages of low stability and gas separation performance. In this project, -NH2, -COOH or -SO3H functionalized mesoporous polymer is constructed on porous Al2O3 support, then ionic liquid [MTBDH+][TFE-], [P(C4)4][Gly] are impregnated in the pores. Through tuning synthesis method, functionalization design and ionic liquid, the relationships among CO2, N2, CH4 permeation performance, stability and pore size distribution, hydrogen bond between functional group and ionic liquid, type and dosage of ionic liquid are investigated and revealed, which will enhance the separation performance and increase the stability of supported membrane. This project will provide new idea for fabrication of porous support, and lay the foundation of membrane preparation with high performances.
英文关键词: Gas separation membrane;Carbon dioxide;Supported membrane;Ionic liquid;Mesoporous polymer