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Reversible coordinative binding and separation of sulfur dioxide in a robust metal–organic framework with open copper sites

Reversible coordinative binding and separation of sulfur dioxide in a robust metal–organic framework with open copper sites
Reversible coordinative binding and separation of sulfur dioxide in a robust metal–organic framework with open copper sites

Emissions of SO2 from flue gas and marine transport have detrimental impacts on the environment and human health, but SO2 is also an important industrial feedstock if it can be recovered, stored and transported efficiently. Here we report the exceptional adsorption and separation of SO2 in a porous material, [Cu2(L)] (H4L = 4′,4‴-(pyridine-3,5-diyl)bis([1,1′-biphenyl]-3,5-dicarboxylic acid)), MFM-170. MFM-170 exhibits fully reversible SO2 uptake of 17.5 mmol g−1 at 298 K and 1.0 bar, and the SO2 binding domains for trapped molecules within MFM-170 have been determined. We report the reversible coordination of SO2 to open Cu(ii) sites, which contributes to excellent adsorption thermodynamics and selectivities for SO2 binding and facile regeneration of MFM-170 after desorption. MFM-170 is stable to water, acid and base and shows great promise for the dynamic separation of SO2 from simulated flue gas mixtures, as confirmed by breakthrough experiments.

1476-1122
1358-1365
Smith, Gemma L.
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Eyley, Jennifer E.
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Han, Xue
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Zhang, Xinran
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Li, Jiangnan
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Jacques, Nicholas M.
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Godfrey, Harry G.W.
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Argent, Stephen P.
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McCormick McPherson, Laura J.
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Teat, Simon J.
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Cheng, Yongqiang
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Frogley, Mark D.
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Cinque, Gianfelice
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Day, Sarah J.
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Tang, Chiu C.
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Easun, Timothy L.
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Rudić, Svemir
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Ramirez-Cuesta, Anibal J.
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Yang, Sihai
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Schröder, Martin
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Smith, Gemma L.
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Eyley, Jennifer E.
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Han, Xue
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Zhang, Xinran
67276c76-1d6d-4b1c-80ab-45b1856caea5
Li, Jiangnan
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Jacques, Nicholas M.
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Godfrey, Harry G.W.
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Argent, Stephen P.
a14b91f7-4abc-4a1a-b164-dd53da5b1713
McCormick McPherson, Laura J.
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Teat, Simon J.
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Cheng, Yongqiang
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Frogley, Mark D.
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Cinque, Gianfelice
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Day, Sarah J.
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Tang, Chiu C.
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Easun, Timothy L.
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Rudić, Svemir
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Ramirez-Cuesta, Anibal J.
34895c52-7d2f-4576-8da7-8b326efb6fbd
Yang, Sihai
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Schröder, Martin
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Smith, Gemma L., Eyley, Jennifer E., Han, Xue, Zhang, Xinran, Li, Jiangnan, Jacques, Nicholas M., Godfrey, Harry G.W., Argent, Stephen P., McCormick McPherson, Laura J., Teat, Simon J., Cheng, Yongqiang, Frogley, Mark D., Cinque, Gianfelice, Day, Sarah J., Tang, Chiu C., Easun, Timothy L., Rudić, Svemir, Ramirez-Cuesta, Anibal J., Yang, Sihai and Schröder, Martin (2019) Reversible coordinative binding and separation of sulfur dioxide in a robust metal–organic framework with open copper sites. Nature Materials, 18 (12), 1358-1365. (doi:10.1038/s41563-019-0495-0).

Record type: Article

Abstract

Emissions of SO2 from flue gas and marine transport have detrimental impacts on the environment and human health, but SO2 is also an important industrial feedstock if it can be recovered, stored and transported efficiently. Here we report the exceptional adsorption and separation of SO2 in a porous material, [Cu2(L)] (H4L = 4′,4‴-(pyridine-3,5-diyl)bis([1,1′-biphenyl]-3,5-dicarboxylic acid)), MFM-170. MFM-170 exhibits fully reversible SO2 uptake of 17.5 mmol g−1 at 298 K and 1.0 bar, and the SO2 binding domains for trapped molecules within MFM-170 have been determined. We report the reversible coordination of SO2 to open Cu(ii) sites, which contributes to excellent adsorption thermodynamics and selectivities for SO2 binding and facile regeneration of MFM-170 after desorption. MFM-170 is stable to water, acid and base and shows great promise for the dynamic separation of SO2 from simulated flue gas mixtures, as confirmed by breakthrough experiments.

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More information

Accepted/In Press date: 29 August 2019
e-pub ahead of print date: 14 October 2019
Published date: 1 December 2019

Identifiers

Local EPrints ID: 438689
URI: http://eprints.soton.ac.uk/id/eprint/438689
ISSN: 1476-1122
PURE UUID: 8c8afd9d-6809-4522-bdb1-2b2f619978b8
ORCID for Laura J. McCormick McPherson: ORCID iD orcid.org/0000-0002-6634-4717

Catalogue record

Date deposited: 20 Mar 2020 17:37
Last modified: 26 Nov 2021 03:21

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Contributors

Author: Gemma L. Smith
Author: Jennifer E. Eyley
Author: Xue Han
Author: Xinran Zhang
Author: Jiangnan Li
Author: Nicholas M. Jacques
Author: Harry G.W. Godfrey
Author: Stephen P. Argent
Author: Simon J. Teat
Author: Yongqiang Cheng
Author: Mark D. Frogley
Author: Gianfelice Cinque
Author: Sarah J. Day
Author: Chiu C. Tang
Author: Timothy L. Easun
Author: Svemir Rudić
Author: Anibal J. Ramirez-Cuesta
Author: Sihai Yang
Author: Martin Schröder

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