DOI: 10.1073/pnas.0909718106. Highly efficient separation of carbon dioxide by a metal-organic framework replete with open metal sites

Highly efficient separation of carbon dioxide by a metal-organic framework replete with open metal sites

10.1073/pnas.0909718106

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

Selective capture of CO 2 , which is essential for natural gas purification and CO 2 sequestration, has been reported in zeolites, porous membranes, and amine solutions. However, all such systems require substantial energy input for release of captured CO 2 , leading to low energy efficiency and high cost. A new class of materials named metal-organic frameworks (MOFs) has also been demonstrated to take up voluminous amounts of CO 2 . However, these studies have been largely limited to equilibrium uptake measurements, which are a poor predictor of separation ability, rather than the more industrially relevant kinetic (dynamic) capacity. Here, we report that a known MOF, Mg-MOF-74, with open magnesium sites, rivals competitive materials in CO 2 capture, with 8.9 wt. % dynamic capacity, and undergoes facile CO 2 release at significantly lower temperature, 80 °C. Mg-MOF-74 offers an excellent balance between dynamic capacity and regeneration. These results demonstrate the potential of MOFs with open metal sites as efficient CO 2 capture media.

Bibliography

Britt, D., Furukawa, H., Wang, B., Glover, T. G., & Yaghi, O. M. (2009). Highly efficient separation of carbon dioxide by a metal-organic framework replete with open metal sites. Proceedings of the National Academy of Sciences, 106(49), 20637â20640.

Authors 5

David Britt (first)
Hiroyasu Furukawa (additional)
Bo Wang (additional)
T. Grant Glover (additional)
Omar M. Yaghi (additional)

References 24 Referenced 1,073

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Dates

Type	When
Created	15 years, 8 months ago (Nov. 30, 2009, 10:19 p.m.)
Deposited	3 years, 4 months ago (April 12, 2022, 6:54 p.m.)
Indexed	1 day, 4 hours ago (Aug. 24, 2025, 6:48 p.m.)
Issued	15 years, 8 months ago (Dec. 8, 2009)
Published	15 years, 8 months ago (Dec. 8, 2009)
Published Online	15 years, 8 months ago (Dec. 8, 2009)
Published Print	15 years, 8 months ago (Dec. 8, 2009)

Funders 0

None

BibTeX

@article{Britt_2009, title={Highly efficient separation of carbon dioxide by a metal-organic framework replete with open metal sites}, volume={106}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.0909718106}, DOI={10.1073/pnas.0909718106}, number={49}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Britt, David and Furukawa, Hiroyasu and Wang, Bo and Glover, T. Grant and Yaghi, Omar M.}, year={2009}, month=dec, pages={20637–20640} }

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