针对传统有机胺或离子液体水溶液再生能耗高、纯离子液体或有机胺非水溶液吸收后粘度大等缺陷，本项目创新性地将功能化离子液体溶解在有机溶剂中组成复合体系用于捕集CO2。在该体系中，功能化离子液体作为主吸收剂，保证了体系良好的CO2吸收性能；利用有机溶剂代替水可显著降低体系的再生能耗。此外，通过添加少量乙二醇，调控溶剂的挥发性并有效避免吸收产物的析出。本项目拟基于量子化学计算理论，设计并合成新型功能化离子液体，优化复合体系的组分和比例并考察其吸收-解吸性能，估算其再生能耗；通过红外和核磁等表征方法分析吸收过程中的产物，探明产物的变化规律，阐明其捕集CO2的反应机理，并揭示其吸收CO2的传质-反应动力学；在此基础上，考察复合体系在模拟烟气下的运行效果，优化吸收-解吸工艺参数，评价该体系捕集CO2的工艺性能。本项目的研究结果，将为高效低耗碳捕集技术的研究提供新思路，也为该技术推广和应用提供支撑依据。

To reduce the high regeneration energy consumption of traditional amine or ionic liquid aqueous solution and the high viscosity of the pure ionic liquid or saturated amine non-aqueous solution, a novel functionalized ionic liquid combine with organic solvents is proposed innovatively for CO2 capture in this project. In this novel system, functionalized ionic liquid as the main absorbent which ensures high CO2 absorption rate and loading, and the organic solvent can significantly reduce the regeneration energy consumption of the system compared with water. In addition, ethylene glycol (EG) was added as a regulator to reduce the volatility of the solvent and prevent the absorption product from being precipitated in the saturated solution. Quantum chemistry calculations will be used to guide the design and synthesis of multi-amino-functionalized ionic liquid. The ratio of composite will be optimized, the absorption-desorption performance will be investigated and the regeneration energy consumption will be calculated. The variation law of the products in the reaction process will be analyzed to clarify the reaction mechanism by FT-IR and NMR. Moreover, the mass transfer-reaction kinetics will be explored to obtain the reaction rate constant and the enhancement factor. Finally, the operation effect under simulated flue gas will be investigated, and the process parameters will be optimized to fully evaluate the performance of the novel absorption system for CO2 capture. The research results of this project will provide new ideas for the high-efficiency and low-energy consumption CO2 capture technology, and benefit the industrial applications.