Authors
Xufei Li, Junfa Fu, Qi Ding, Weiqiu Huang, Zhaoqiang Zhang
Published in
Chemistry (Weinheim an der Bergstrasse, Germany). Pages e71587. Aug 18, 2026. Epub Aug 18, 2026.
Abstract
Industrial separation of C2 gas mixtures, particularly challenging C2H2/CO2, C2H2/C2H4, and C2H6/C2H4 separations, occupies a considerable portion of energy consumption in chemical production, highlighting the urgent need for low-carbon separation technologies. Adsorptive separation using functional porous materials provides a promising ambient-condition alternative to cut energy demand dramatically while maintaining high purification efficiency. Beyond the extensively studied metal-organic frameworks (MOFs), hydrogen-bonded organic frameworks (HOFs) have emerged as a rising class of crystalline porous materials for hydrocarbon separation, thanks to their tunable framework chemistry, precisely engineered pore environments, facile solution processability, and excellent regeneration capability. These unique advantages have enabled HOFs to deliver competitive performance in demanding separation scenarios ranging from selective C2H2 capture to C2H6-selective olefin purification. Herein, we present a timely and comprehensive overview of recent advances in HOF-based sorbents for C2 gas separation and purification, covering conventional binary systems (C2H2/CO2, C2H2/C2H4, and C2H6/C2H4) as well as more complex multicomponent systems (three-component C2H2/CO2/C2H4, C2H2/ C2H6/C2H4, and seven-component CH4/C2H4/C2H6/C3H6/C3H8/CO2/H2). We further elucidate the critical structure-performance relationships governing different separation mechanisms and highlight key bottlenecks and future research directions to guide the development of HOFs for industrial gas separation.
PMID:
42611561
Bibliographic data and abstract were imported from PubMed on 19 Aug 2026.
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