Controllable construction of ionic frameworks for multi-site synergetic enhancement of CO_(2) capture  

作　　者：Yuke Zhang Hongxue Xu Haonan Wu Lijuan Shi Jiancheng Wang Qun Yi 

机构地区：[1]State Key Laboratory of Clean and Efficient Coal Utilization,Taiyuan University of Technology,Taiyuan 030024,China [2]School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Wuhan 430205,China [3]Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering,Taiyuan 030024,China

出　　处：《Frontiers of Chemical Science and Engineering》2024年第1期37-49,共13页化学科学与工程前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.22272125);Knowledge Innovation Program of Wuhan-Basic Research(Grant No.2022020801010354);Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering(Grant No.2022SX-TD015);Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy(Grant No.YLU-DNL Fund 2021021)。

摘　　要：CO_(2) capture is one of the key technologies for dealing with the global warming and implementing lowcarbon development strategy.The emergence of ionic metal-organic frameworks(I-MOFs)has diversified the field of porous materials,which have been extensively applied for gas adsorption and separation.In this work,amino-functionalized imidazolium ionic liquid as organic monodentate ligand was used for one step synthesis microporous Cu based I-MOFs.Precise tuning of the adsorption properties was obtained by incorporating aromatic anions,such as phenoxy,benzene carboxyl,and benzene sulfonic acid group into the I-MOFs via a facile ion exchange method.The new I-MOFs showed high thermal stability and high capacity of 5.4 mmol·g^(-1) under atmospheric conditions for selective adsorption of CO_(2).The active sites of microporous Cu-MOF are the ion basic center and unsaturated metal,and electrostatic attraction and hydroxyl bonding between CO_(2) and modified functional sulfonic groups are responsible for the adsorption.This work provides a feasible strategy for the design of I-MOF for functional gas capture.

关 键 词：carbon dioxide capture MICROPORES ionic liquids multi-site synergism ionic metal-organic frameworks 

分 类 号：O62[理学—有机化学]