SO<sub>2</sub> Capture Using Porous Organic Cages

Martinez-Ahumada, Eva, He, Donglin ORCID: 0000-0002-5512-8162, Berryman, Victoria ORCID: 0000-0003-0200-4788, Lopez-Olvera, Alfredo, Hernandez, Magali, Jancik, Vojtech, Martis, Vladimir, Vera, Marco A, Lima, Enrique, Parker, Douglas J ORCID: 0000-0002-0745-5919
et al (show 3 more authors) (2021) SO<sub>2</sub> Capture Using Porous Organic Cages. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 60 (32). pp. 17556-17563.

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We report the first experimental investigation of porous organic cages (POCs) for the demanding challenge of SO<sub>2</sub> capture. Three structurally related N-containing cage molecular materials were studied. An imine-functionalized POC (CC3) showed modest and reversible SO<sub>2</sub> capture, while a secondary-amine POC (RCC3) exhibited high but irreversible SO<sub>2</sub> capture. A tertiary amine POC (6FT-RCC3) demonstrated very high SO<sub>2</sub> capture (13.78 mmol g<sup>-1</sup> ; 16.4 SO<sub>2</sub> molecules per cage) combined with excellent reversibility for at least 50 adsorption-desorption cycles. The adsorption behavior was investigated by FTIR spectroscopy, <sup>13</sup> C CP-MAS NMR experiments, and computational calculations.

Item Type: Article
Uncontrolled Keywords: adsorption, chemical stability, porous organic cages, SO2
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 01 Jul 2021 09:51
Last Modified: 17 Oct 2023 20:22
DOI: 10.1002/anie.202104555
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