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Three-in-One C 2 H 2 -Selectivity-Guided Adsorptive Separation across an Isoreticular Family of Cationic Square-Lattice MOFs.
- Source :
-
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2022 Jan 21; Vol. 61 (4), pp. e202114132. Date of Electronic Publication: 2021 Dec 16. - Publication Year :
- 2022
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Abstract
- Energy-efficient selective physisorption driven C <subscript>2</subscript> H <subscript>2</subscript> separation from industrial C2-C1 impurities such as C <subscript>2</subscript> H <subscript>4</subscript> , CO <subscript>2</subscript> and CH <subscript>4</subscript> is of great importance in the purification of downstream commodity chemicals. We address this challenge employing a series of isoreticular cationic metal-organic frameworks, namely iMOF-nC (n=5, 6, 7). All three square lattice topology MOFs registered higher C <subscript>2</subscript> H <subscript>2</subscript> uptakes versus the competing C2-C1 gases (C <subscript>2</subscript> H <subscript>4</subscript> , CO <subscript>2</subscript> and CH <subscript>4</subscript> ). Dynamic column breakthrough experiments on the best-performing iMOF-6C revealed the first three-in-one C <subscript>2</subscript> H <subscript>2</subscript> adsorption selectivity guided separation of C <subscript>2</subscript> H <subscript>2</subscript> from 1:1 C <subscript>2</subscript> H <subscript>2</subscript> /CO <subscript>2</subscript> , C <subscript>2</subscript> H <subscript>2</subscript> /C <subscript>2</subscript> H <subscript>4</subscript> and C <subscript>2</subscript> H <subscript>2</subscript> /CH <subscript>4</subscript> mixtures. Density functional theory calculations critically examined the C <subscript>2</subscript> H <subscript>2</subscript> selective interactions in iMOF-6C. Thanks to the abundance of square lattice topology MOFs, this study introduces a crystal engineering blueprint for designing C <subscript>2</subscript> H <subscript>2</subscript> -selective layered metal-organic physisorbents, previously unreported in cationic frameworks.<br /> (© 2021 Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Volume :
- 61
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 34797935
- Full Text :
- https://doi.org/10.1002/anie.202114132