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SO 2 Capture Using Porous Organic Cages
Author(s) -
MartínezAhumada Eva,
He Donglin,
Berryman Victoria,
LópezOlvera Alfredo,
Hernandez Magali,
Jancik Vojtech,
Martis Vladimir,
Vera Marco A.,
Lima Enrique,
Parker Douglas J.,
Cooper Andrew I.,
Ibarra Ilich A.,
Liu Ming
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202104555
Subject(s) - imine , adsorption , amine gas treating , desorption , chemistry , cage , porosity , fourier transform infrared spectroscopy , molecule , materials science , chemical engineering , organic chemistry , catalysis , mathematics , combinatorics , engineering
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.