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SO₂ Capture Using Porous Organic Cages.

ABSTRACT: We report the first experimental investigation of porous organic cages (POCs) for the demanding challenge of SO₂ capture. Three structurally related N-containing cage molecular materials were studied. An imine-functionalized POC (CC3) showed modest and reversible SO₂ capture, while a secondary-amine POC (RCC3) exhibited high but irreversible SO₂ capture. A tertiary amine POC (6FT-RCC3) demonstrated very high SO₂ capture (13.78 mmol g^-1 ; 16.4 SO₂ 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.

SUBMITTER: Martinez-Ahumada E

PROVIDER: S-EPMC8361948 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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SO2 Capture Using Porous Organic Cages.

Martínez-Ahumada Eva E He Donglin D Berryman Victoria V López-Olvera Alfredo A Hernandez Magali M Jancik Vojtech V Martis Vladimir V Vera Marco A MA Lima Enrique E Parker Douglas J DJ Cooper Andrew I AI Ibarra Ilich A IA Liu Ming M

Angewandte Chemie (International ed. in English) 20210610 32

We report the first experimental investigation of porous organic cages (POCs) for the demanding challenge of SO2 capture. Three structurally related N-containing cage molecular materials were studied. An imine-functionalized POC (CC3) showed modest and reversible SO2 capture, while a secondary-amine POC (RCC3) exhibited high but irreversible SO2 capture. A tertiary amine POC (6FT-RCC3) demonstrated very high SO2 capture (13.78 mmol g-1 ; 16. ...[more]

PMID: 33979473

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