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De-Linker-Enabled Exceptional Volumetric Acetylene Storage Capacity and Benchmark C 2 H 2 /C 2 H 4 and C 2 H 2 /CO 2 Separations in Metal-Organic Frameworks.
- Source :
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Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2023 Mar 01; Vol. 62 (10), pp. e202217839. Date of Electronic Publication: 2023 Jan 31. - Publication Year :
- 2023
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Abstract
- An ideal adsorbent for separation requires optimizing both storage capacity and selectivity, but maximizing both or achieving a desired balance remain challenging. Herein, a de-linker strategy is proposed to address this issue for metal-organic frameworks (MOFs). Broadly speaking, the de-linker idea targets a class of materials that may be viewed as being intermediate between zeolites and MOFs. Its feasibility is shown here by a series of ultra-microporous MOFs (SNNU-98-M, M=Mn, Co, Ni, Zn). SNNU-98 exhibit high volumetric C <subscript>2</subscript> H <subscript>2</subscript> uptake capacity under low and ambient pressures (175.3 cm <superscript>3</superscript> cm <superscript>-3</superscript> @ 0.1 bar, 222.9 cm <superscript>3</superscript> cm <superscript>-3</superscript> @ 1 bar, 298 K), as well as extraordinary selectivity (2405.7 for C <subscript>2</subscript> H <subscript>2</subscript> /C <subscript>2</subscript> H <subscript>4</subscript> , 22.7 for C <subscript>2</subscript> H <subscript>2</subscript> /CO <subscript>2</subscript> ). Remarkably, SNNU-98-Mn can efficiently separate C <subscript>2</subscript> H <subscript>2</subscript> from C <subscript>2</subscript> H <subscript>2</subscript> /CO <subscript>2</subscript> and C <subscript>2</subscript> H <subscript>2</subscript> /C <subscript>2</subscript> H <subscript>4</subscript> mixtures with a benchmark C <subscript>2</subscript> H <subscript>2</subscript> /C <subscript>2</subscript> H <subscript>4</subscript> (1/99) breakthrough time of 2325 min g <superscript>-1</superscript> , and produce 99.9999 % C <subscript>2</subscript> H <subscript>4</subscript> with a productivity up to 64.6 mmol g <superscript>-1</superscript> , surpassing values of reported MOF adsorbents.<br /> (© 2023 Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Volume :
- 62
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 36631412
- Full Text :
- https://doi.org/10.1002/anie.202217839