NDLI: Aromatic Amine-Functionalized Covalent Organic Frameworks (COFs) for CO<sub>2</sub>/N<sub>2</sub> Separation.

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Aromatic Amine-Functionalized Covalent Organic Frameworks (COFs) for CO₂/N₂ Separation.

Content Provider	Europe PMC
Author	Dautzenberg, Ellen Li, Guanna de Smet, Louis C.P.M.
Copyright Year	2023
Abstract	CO2 is a prominent example for an exhaustgas, and itis known for its high impact on global warming. Therefore, carboncapture from CO2 emissions of industrial processes is increasinglyimportant to halt and prevent the disruptive consequences of globalwarming. Covalent organic frameworks (COFs) as porous nanomaterialshave been shown to selectively adsorb CO2 in high quantitiesand with high CO2/N2 selectivity. Interactionswith amines are recognized to selectively adsorb CO2 andhelp capture it from exhaust emissions. Herein, a novel COF (Me3TFB-(NH2)2BD), which was not accessiblevia a direct condensation reaction, was synthetized by dynamic linkerexchange starting with Me3TFB-BD. Despite the linker exchange,the porosity of the COF was largely maintained, resulting in a highBET surface area of 1624 ± 89 m2/g. The CO2 and N2 adsorption isotherms at 273 and 295 K were studiedto determine the performance in carbon capture at flue gas conditions.Me3TFB-(NH2)2BD adsorbs 1.12 ±0.26 and 0.72 ± 0.07 mmol/g of CO2 at 1 bar and 273and 295 K, respectively. The COF shows a high CO2/N2 IAST selectivity under flue gas conditions (273 K:83 ±11, 295 K: 47 ± 11). The interaction of the aromatic amine groupswith CO2 is based on physisorption, which is expected tomake the regeneration of the material energy efficient.
ISSN	19448244
Journal	ACS Applied Materials & Interfaces
Volume Number	15
PubMed Central reference number	PMC9906623
Issue Number	4
PubMed reference number	36648205
e-ISSN	19448252
DOI	10.1021/acsami.2c17672
Language	English
Publisher	American Chemical Society
Publisher Date	2023-01-17
Access Restriction	Open
Rights License	Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). © 2023 The Authors. Published by American Chemical Society
Subject Keyword	covalent organic frameworks dynamic covalent chemistry linker exchange gas separation carbon capture
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Medicine Materials Science

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Aromatic Amine-Functionalized Covalent Organic Frameworks (COFs) for CO2/N2 Separation.

Aromatic Amine-Functionalized Covalent Organic Frameworks (COFs) for CO₂/N₂ Separation.