CH₃OH-induced structural optimization of ZIF-9 for efficient C₃H₆/C₃H₈ separation.

Authors

Jiaqi Wen, Hao Yu, Jiakai Shi, Xiaoyu Miao, Shi Liu, Jingyu Cai, Linxi Hou

Published in

Nanoscale. Sep 23, 2026. Epub Sep 23, 2026.

Abstract

The efficient separation of C₃H₆ and C₃H₈ is a challenging industrial process. In this study, flexible ZIF-9 was modified by methanol solvent exchange to improve C₃H₆/C₃H₈ separation. The framework topology remained intact, while solvent-induced effects optimized the micropore size distribution, enhanced structural flexibility and enabled guest-responsive pore opening. Dynamic breakthrough tests showed that modified ZIF-9-II exhibited a significantly improved separation window, enabling effective separation in both propylene-rich and propane-rich mixtures with good cycling stability. This work demonstrates that methanol-mediated solvent exchange is an effective strategy to modulate the ZIF-9 pore structure and boost C₃H₆/C₃H₈ separation performance.

PMID:
42773937
Bibliographic data and abstract were imported from PubMed on 23 Sep 2026.

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