Structural dimensionality governing CO2/C2H2 separation in MWW zeolites

Ang Li; Xiao-Xia Zhang; Yuqi Zhang; Mariya Shamzhy; Xing-Zhe Guo; Wan Yan; Bingwen Li; Xuzhi Hu; Rongsheng Cai; Feng Zhou

doi:10.1039/D5MH02061A

Structural dimensionality governing CO₂/C₂H₂ separation in MWW zeolites

Ang Li,

^a Xiao-Xia Zhang,

^a Yuqi Zhang,

^b Mariya Shamzhy,

^b Xing-Zhe Guo,

^a Wan Yan,

^a Bingwen Li,

*^c Xuzhi Hu,

*^a Rongsheng Cai

*^a and Feng Zhou

^a

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* Corresponding authors

^a State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, PR China
E-mail: xuzhihu@licp.cas.cn, ronghsnegcai@licp.cas.cn

^b Department of Physical and Macromolecular Chemistry, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic

^c Shandong Key Laboratory of Biophysics, Institute of Biophysics, College of Chemistry and Chemical Engineering, Dezhou University, Dezhou, PR China

Abstract

Herein, we uncover structural dimensionality as a key factor governing CO₂/C₂H₂ separation in MWW zeolites. Exfoliated MWW monolayers outperform 3D frameworks by extended breakthrough interval with higher selectivity. Combined experimental and DFT analyses reveal site-specific adsorption and reduced transport barriers, establishing dimensionality as a new design axis for molecular sieving.

Materials Horizons

Structural dimensionality governing CO₂/C₂H₂ separation in MWW zeolites

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