Chlorine-functionalized keto-enamine-based covalent organic frameworks for CO2 separation and capture

Digambar B. Shinde; Mayur Ostwal; Xinbo Wang; Amol M. Hengne; Yang Liu; Guan Sheng; Kuo-Wei Huang; Zhiping Lai

doi:10.1039/C8CE01397G

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Chlorine-functionalized keto-enamine-based covalent organic frameworks for CO₂ separation and capture†

Digambar B. Shinde,

‡^a Mayur Ostwal,‡^a Xinbo Wang,

^a Amol M. Hengne,^b Yang Liu,^a Guan Sheng,^a Kuo-Wei Huang

^b and Zhiping Lai

*^a

Author affiliations

* Corresponding authors

^a Advanced Membranes and Porous Materials Center, Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
E-mail: zhiping.lai@kaust.edu.sa

^b Catalysis Center, Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia

Abstract

We report highly chemically and thermally stable chlorine-functionalized CAA-COF-1 and CAA-COF-2. The chlorine-functionalized COFs exhibited enhanced CO₂ uptake (by ∼28–44%) in comparison with their pristine COF analogues (TpPa-1 and TpBd). Column breakthrough experiments reveal that CAA-COF-1 and CAA-COF-2 display a high CO₂/N₂ (10/90) gas mixture selectivity of 95 and 54, respectively. Additionally, CAA-COF-1 exhibits a CO₂/CH₄ (10/90) column breakthrough selectivity of 29.

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Article information

DOI: https://doi.org/10.1039/C8CE01397G
Article type: Communication
Submitted: 19 Aug 2018
Accepted: 18 Sep 2018
First published: 05 Oct 2018

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CrystEngComm, 2018,20, 7621-7625

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Chlorine-functionalized keto-enamine-based covalent organic frameworks for CO₂ separation and capture

D. B. Shinde, M. Ostwal, X. Wang, A. M. Hengne, Y. Liu, G. Sheng, K. Huang and Z. Lai, CrystEngComm, 2018, 20, 7621 DOI: 10.1039/C8CE01397G

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