超分子轮烷构型聚酰亚胺-离子液体CO2分离膜的构筑与研究

项目名称： 超分子轮烷构型聚酰亚胺-离子液体CO2分离膜的构筑与研究

项目编号： No.21506160

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： 赵红永

作者单位： 天津工业大学

项目金额： 21万元

中文摘要： 在化工、能源与环境等相关领域中，采用膜技术规模化分离捕集CO2已经成为一项重要的化工过程。目前，CO2分离膜材料的研究与发展已明显滞后于CO2膜分离的整体发展与应用。本课题基于溶解-扩散理论与超分子轮烷结构的特点，针对改善与增强聚酰亚胺膜材料的CO2溶解性与溶解选择性所面临的问题与挑战，从超分子角度出发提出新思路，采用轮烷方式将对CO2有强吸附作用的离子液体与聚酰亚胺相结合构筑新型的聚轮烷超分子膜材料。考察离子液体固定化的具体方式与技术，探讨调节和控制聚轮烷膜结构的方法及其成膜特性与成膜机理，建立聚轮烷超分子膜材料的功能设计原理和分子设计合成方法的研究体系。揭示聚轮烷中离子液体对CO2的吸附与传递机理以及与CO2渗透组分的相互作用规律。为研究开发具有高CO2渗透性与选择性的聚轮烷超分子膜材料提供有效途径，在基础理论研究和实际应用领域都具有重要价值与意义。

中文关键词： 二氧化碳分离；膜技术；聚酰亚胺；离子液体；超分子轮烷结构

英文摘要： The scale remove of CO2 by membrane technology is an important chemical engineering process in chemical, energy and environment related field. Currently, the research and development of membrane materials for CO2 separation are lagging behind the whole development and application of CO2 membrane separation. In this topic, according to the solution-diffusion theory and characteristics of the supramolecular rotaxane structure, aiming at the problems and challenges of improving and enhancing the CO2 solubility and solubility selectivity of polyimide membrane materials, and presenting a new thoughts from viewpoints of supramolecular, the novel polyrotaxane supramolecular membrane materials consisting of ionic liquids with strong adsorption to CO2 and polyimide are prepared. The specific method and technology of immobilizing ionic liquids are investigated. The methods of adjusting and controlling the structure of polyrotaxane membranes are investigated. The property and mechanism of forming membranes are also investigated. The researching system on the principle of functional designing and the method of molecular designing and synthesizing are established based on the polyrotaxane supramolecular membrane materials. The mechanism of CO2 adsorption and transport and the interaction rules of CO2 in the ionic liquids are investigated in the polyrotaxane. It provides an effective way to research and explore the polyrotaxane supramolecular membrane materials with excellent CO2 permeability and selectivity. It displays the important value and significance in the research of basic theory and the practical applications.

英文关键词： Carbon dioxide separation;Membrane technology;Polyimide;Ionic liquids;Supramolecular rotaxane structure