Screening and design of COF-based mixed-matrix membrane for CH<sub>4</sub>/N<sub>2</sub> separation

Tongan Yan; Dahuan Liu; Qingyuan Yang; Chongli Zhong

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Screening and design of COF-based mixed-matrix membrane for CH₄/N₂ separation

Recent Advances in Adsorptive Separation Materials and Technologies | Updated：2026-01-06

- Screening and design of COF-based mixed-matrix membrane for CH₄/N₂ separation
- Chinese Journal of Chemical Engineering Vol. 42, Issue 2, Pages: 170-177(2022)
- Affiliations：
  
  1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology,Beijing,China,100029
  2. State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University,Tianjin,China,300387
- Author bio：
- Funds：
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- Published：2022
- Accepted：
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摘要

Abstract

Membrane separation is a high-efficiency

energy-saving

and environment-friendly separation technology. Covalent organic framework (COF)-based mixed-matrix membranes (MMMs) have broad application prospects in gas separation and are expected to provide new solutions for coal-bed methane purification. Herein

a high-throughput screening method is used to calculate and evaluate COF-based MMMs for CH

separation. General design rules are proposed from thermodynamic and kinetic points of view using the computation-ready

experimental COFs. From our database containing 471

671 generated COFs

5 COF membrane materials were screened with excellent membrane selectivities

which were then used as the filler of MMMs for separation performance evaluation. Among them

BAR-NAP-Benzene_CF

combined with polydimethylsiloxane and styrene-

-butadiene-

-styrene show high CH

permeability of 4.43×10

-13

mol·m·s

-1

·Pa

-1

·m

-2

and high CH

selectivity of 9.54

respectively. The obtained results may provide reasonable info

rmation for the design of COF-based membranes for the efficient separation of CH

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Screening and design of COF-based mixed-matrix membrane for CH4/N2 separation

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摘要

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Screening and design of COF-based mixed-matrix membrane for CH₄/N₂ separation