Revealing the CO2 adsorption blocking mechanism in flexible low-silica small-pore zeolites via three-dimensional electron diffraction

Jian Guo; Chenyang Nie; Shitai Li; Nana Yan; Peng Guo; Zhongmin Liu

doi:10.1039/d4cc06791f

Revealing the CO₂ adsorption blocking mechanism in flexible low-silica small-pore zeolites via three-dimensional electron diffraction

Chem Commun (Camb). 2025 Jan 17. doi: 10.1039/d4cc06791f. Online ahead of print.

Authors

Jian Guo^{1

2}, Chenyang Nie^{2

3}, Shitai Li^{2

3}, Nana Yan², Peng Guo^{2

3}, Zhongmin Liu^{1

2

3}

Affiliations

¹ Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China.
² National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China. [email protected].
³ University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 39821242
DOI: 10.1039/d4cc06791f

Abstract

Low-silica small-pore zeolites are essential for CO₂ selective adsorption; however, some Na-form flexible types exhibit negligible performance. Advanced three-dimensional electron diffraction elucidated the blocking mechanism: Na⁺ ions in elliptical 8-rings hinder CO₂ diffusion. Structural insights guided the design of K-form types with wider 8-rings, achieving enhanced CO₂ adsorption.