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Cage‐Like Porous Materials with Simultaneous High C 2 H 2 Storage and Excellent C 2 H 2 /CO 2 Separation Performance
Author(s) -
Di Zhengyi,
Liu Caiping,
Pang Jiandong,
Chen Cheng,
Hu Falu,
Yuan Daqiang,
Wu Mingyan,
Hong Maochun
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202101907
Subject(s) - selectivity , adsorption , porosity , bar (unit) , materials science , monte carlo method , chemistry , chemical engineering , crystallography , nanotechnology , physics , catalysis , organic chemistry , meteorology , engineering , statistics , mathematics
Adsorption‐based separation is an important technology for C 2 H 2 purification due to the environmentally friendly and energy‐efficient advantage. In addition to the high selectivity of C 2 H 2 /CO 2 , the high uptake of C 2 H 2 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 C 2 H 2 uptakes at 1 bar and 298 K. Dynamic breakthrough studies show that they all exhibit excellent C 2 H 2 /CO 2 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.