Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 Jan 26;61(5):e202112916.
doi: 10.1002/anie.202112916. Epub 2021 Dec 18.

Zinc Containing Small-Pore Zeolites for Capture of Low Concentration Carbon Dioxide

Donglong Fu  1 , Youngkyu Park  1 , Mark E Davis  1
Affiliations

Zinc Containing Small-Pore Zeolites for Capture of Low Concentration Carbon Dioxide

Donglong Fu et al. Angew Chem Int Ed Engl. .

Abstract

The capture of low concentration CO2 presents numerous challenges. Here, we report that zinc containing chabazite (CHA) zeolites can realize high capacity, fast adsorption kinetics, and low desorption energy when capturing ca. 400 ppm CO2 . Control of the state and location of the zinc ions in the CHA cage is critical to the performance. Zn2+ loaded onto paired anionic sites in the six-membered rings (6MRs) in the CHA cage are the primary sites to adsorb ca. 0.51 mmol CO2 /g-zeolite with Si/Al=ca. 7, a 17-fold increase compared to the parent H-form. The capacity is increased further to ca. 0.67 mmol CO2 /g-zeolite with Si/Al=ca. 2 due to more paired sites for zinc exchange. Zeolites with double six-membered rings (D6MRs) that orient 6MRs into the cages give enhanced uptakes for CO2 adsorption with zinc exchange. The results reveal that zinc exchanged CHA and several other small pore, cage containing zeolites merit further investigation for the capture of low concentration CO2 .

Keywords: adsorption; carbon capture; physisorbents; small-pore zeolites; zinc.

PubMed Disclaimer

References

    1. K. S. Lackner, S. Brennan, J. M. Matter, A.-H. A. Park, A. Wright, B. van der Zwaan, Proc. Natl. Acad. Sci. USA 2012, 109, 13156-13162.
    1. E. S. Sanz-Pérez, C. R. Murdock, S. A. Didas, C. W. Jones, Chem. Rev. 2016, 116, 11840-11876.
    1. C. Brady, M. E. Davis, B. Xu, Proc. Natl. Acad. Sci. USA 2019, 116, 25001-25007.
    1. C. Breyer, M. Fasihi, C. Bajamundi, F. Creutzig, Joule 2019, 3, 2053-2057.
    1. X. Shi, H. Xiao, H. Azarabadi, J. Song, X. Wu, X. Chen, K. S. Lackner, Angew. Chem. Int. Ed. 2020, 59, 6984-7006;

Grants and funding

LinkOut - more resources