Privileged zeolitic sites for humid CO2 adsorption: K+ in double eight-membered rings

Hwangho Lee; Shu Hikima; Ryohji Ohnishi; Takahiko Takewaki; Alexander Katz

doi:10.1039/D4CC03267E

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Privileged zeolitic sites for humid CO₂ adsorption: K⁺ in double eight-membered rings†

Hwangho Lee,*^a Shu Hikima,^b Ryohji Ohnishi,

^b Takahiko Takewaki^b and Alexander Katz

*^a

Author affiliations

* Corresponding authors

^a Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, USA
E-mail: ieehwangho@berkeley.edu, askatz@berkeley.edu

^b Mitsubishi Chemical Corporation, Science and Innovation Center, Aoba-ku, Yokohama 227-8502, Japan

Abstract

Humid CO₂ adsorption in K⁺-exchanged zeolites featuring double-eight membered ring (D8R) structures results in CO₂ outcompeting and desorbing dimeric water under equilibrated conditions, which is not observed for either the H⁺-form of the same zeolites or larger-pore zeolites.

This article is part of the themed collection: ChemComm 60th Anniversary Collection

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Article information

DOI: https://doi.org/10.1039/D4CC03267E
Article type: Communication
Submitted: 01 Jul 2024
Accepted: 09 Aug 2024
First published: 27 Aug 2024

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Chem. Commun., 2024,60, 10140-10143

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Privileged zeolitic sites for humid CO₂ adsorption: K⁺ in double eight-membered rings

H. Lee, S. Hikima, R. Ohnishi, T. Takewaki and A. Katz, Chem. Commun., 2024, 60, 10140 DOI: 10.1039/D4CC03267E

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