Wang, Jifu; Sun, Jianyu; Zhang, Lina; Hu, Guoping; Sheng, Gaobing; Chen, Keming; Zhu, Tianyang; Hao, Yufeng; Zhao, Hongyu; Wang, Baodeng; Wei, Wei; Sun, Nannan

CHEMICAL ENGINEERING JOURNAL

2025, ,

Wang, Jifu; Sun, Jianyu; Zhang, Lina; Hu, Guoping; Sheng, Gaobing; Chen, Keming; Zhu, Tianyang; Hao, Yufeng; Zhao, Hongyu; Wang, Baodeng; Wei, Wei; Sun, Nannan

CALF-20, a metal-organic framework material renowned for its exceptional CO2 adsorption performance, demonstrates significant industrial potential for flue gas carbon capture. However, conventional batch preparation and shaping methods have resulted in high production costs. This study introduces a facile, rapid, and cost-effective strategy for CALF-20 preparation, and the reaction mechanism was elucidated. The strategy is readily scalable to kilogram-level production and enables shaping into extrudates, which lowers the material cost for 2/3 and achieves over 95 % reduction in preparation time. The shaped CALF-20 exhibits an outstanding static CO2 adsorption capacity of 2.15 mmol/g under simulated flue gas conditions (313 K, 0.15 bar), matching the performance of samples prepared via expensive and time-consuming solvothermal methods. During simulated vacuum-pressure swing adsorption (VPSA) operations over 50 cycles, the material maintains a stable working capacity of 1.51 mmol/g. Two-stage VPSA modeling demonstrates that the developed CALF-20 extrudates can achieve over 90 % CO2 capture efficiency and product purity. This work addresses critical challenges for CALF-20 application, particularly in advancing practical implementation for low-cost CO2 capture.