Diffusion-rate sieving of propylene and propane mixtures in a cooperatively dynamic porous crystal.

Autor: Su Y; State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China., Otake KI; Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan., Zheng JJ; Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, 100190, P. R. China., Wang P; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China., Lin Q; ReadCrystal Biotech Co., Ltd., Suzhou, 215505, P. R. China., Kitagawa S; Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan. kitagawa@icems.kyoto-u.ac.jp., Gu C; State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China. gucheng@scu.edu.cn.; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China. gucheng@scu.edu.cn.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Apr 04; Vol. 15 (1), pp. 2898. Date of Electronic Publication: 2024 Apr 04.
DOI: 10.1038/s41467-024-47268-7
Abstrakt: Selective molecular recognition is an important alternative to the energy-intensive industrial separation process. Porous coordination polymers (PCPs) offer designing platforms for gas separation because they possess precise controllability over structures at the molecular level. However, PCPs-based gas separations are dominantly achieved using strong adsorptive sites for thermodynamic recognition or pore-aperture control for size sieving, which suffer from insufficient selectivity or sluggish kinetics. Developing PCPs that work at high temperatures and feature both high uptake capacity and selectivity is urgently required but remains challenging. Herein, we report diffusion-rate sieving of propylene/propane (C 3 H 6 /C 3 H 8 ) at 300 K by constructing a PCP material whose global and local dynamics cooperatively govern the adsorption process via the mechanisms of the gate opening for C 3 H 6 and the diffusion regulation for C 3 H 8 , respectively, yielding substantial differences in both uptake capacity and adsorption kinetics. Dynamic separation of an equimolar C 3 H 6 /C 3 H 8 mixture reveals outstanding sieving performance with a C 3 H 6 purity of 99.7% and a separation factor of 318.
(© 2024. The Author(s).)
Databáze: MEDLINE
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