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

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 C...

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Published inCrystEngComm Vol. 20; no. 47; pp. 7621 - 7625
Main Authors Shinde, Digambar B, Ostwal, Mayur, Wang, Xinbo, Hengne, Amol M, Liu, Yang, Guan Sheng, Kuo-Wei, Huang, Lai, Zhiping
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 2018
Subjects
Carbon dioxide
Chlorine
Organic chemistry
Selectivity
Thermal stability
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Summary: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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ISSN:1466-8033
DOI:10.1039/c8ce01397g