Cage‐Like Porous Materials with Simultaneous High C2H2 Storage and Excellent C2H2/CO2 Separation Performance. (30th March 2021)

• Record Type: Journal Article
• Authors: Di, Zhengyi; Liu, Caiping; Pang, Jiandong; Chen, Cheng; Hu, Falu; Yuan, Daqiang; Wu, Mingyan; Hong, Maochun
• Is Part Of: Angewandte Chemie. Volume 133:Number 19(2021)
• Page Start: 10923
• Page End: 10927
• Publication Date: 2021-03-30
• Subjects: C2H2/CO2 separation -- cage-like -- porous materials -- trade-off; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202101907
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Adsorption‐based separation is an important technology for C2 H2 purification due to the environmentally friendly and energy‐efficient advantage. In addition to the high selectivity of C2 H2 /CO2, the high uptake of C2 H2 also plays an important role in the separation progress. However, the trade‐off between adsorption capacity and separation performance is still in a dilemma. Herein, we report a series of cage‐like porous materials named FJI‐H8‐R (R=Me, Et, n Pr and i Pr) which all have high C2 H2 uptakes at 1 bar and 298 K. Dynamic breakthrough studies show that they all exhibit excellent C2 H2 /CO2 separation performance. Particularly, FJI‐H8‐Me possesses a long breakthrough time up to 90 min g −1 . Additionally, Grand Canonical Monte Carlo (GCMC) simulation reveals that the suitable pore space and geometry contribute much to the excellent separation performance. Abstract : Cage‐like FJI‐H8‐R (R=Me, Et, n Pr and i Pr) series all exhibit excellent C2 H2 /CO2 separation performance, which may overcome the trade‐off between adsorption capacity and separation performance.