In:
Angewandte Chemie, Wiley, Vol. 133, No. 32 ( 2021-08-02), p. 17697-17704
Abstract:
We report the first experimental investigation of porous organic cages (POCs) for the demanding challenge of SO 2 capture. Three structurally related N‐containing cage molecular materials were studied. An imine‐functionalized POC (CC3) showed modest and reversible SO 2 capture, while a secondary‐amine POC (RCC3) exhibited high but irreversible SO 2 capture. A tertiary amine POC (6FT‐RCC3) demonstrated very high SO 2 capture (13.78 mmol g −1 ; 16.4 SO 2 molecules per cage) combined with excellent reversibility for at least 50 adsorption–desorption cycles. The adsorption behavior was investigated by FTIR spectroscopy, 13 C CP‐MAS NMR experiments, and computational calculations.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v133.32
DOI:
10.1002/ange.202104555
Language:
English
Publisher:
Wiley
Publication Date:
2021
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