吸附
色散(光学)
阳离子聚合
化学工程
氨
X射线光电子能谱
工作(物理)
多孔介质
多孔性
材料科学
化学
有机化学
高分子化学
热力学
物理
光学
工程类
作者
Yu Fu,Yue Wu,Jiahui Zeng,Shanshan Wang,Xiaoyü Li,Wenxiang Zhang,Heping Ma
标识
DOI:10.1002/chem.202302462
摘要
Efficient and inherently safe NH3 storage and separation are of significant importance for the chemical industry. Herein, we proposed zwitterionic COF as a porous host to disperse LiCl for highly efficient NH3 storage and separation with record adsorption capacity. The equivalently cationic and anionic groups in the channels of zwitterionic COF could act as two separated sites to facilitate the dispersion of LiCl, hence the optimal composite exhibits a high capture capacity of 44.98 mmol/g at 25 °C and 1 bar, far exceeding other existing porous materials. Notably, the adsorption capacity is completely reversible and the efficient separation of NH3 from NH3 /CO2 /N2 mixture is achieved through breakthrough experiments. DFT calculation combined with XPS and 7 Li NMR experimental results give insight into the interaction between zwitterionic COF and LiCl. This work extends possibilities for the development of efficient adsorbents for NH3 storage and separation.
科研通智能强力驱动
Strongly Powered by AbleSci AI