Fine-Tuned Ultra-Microporous Metal-Organic Framework in Mixed-Matrix Membrane Pore-Tailoring Optimization for C2 H2 /C2 H4 Separation

Fine-Tuned Ultra-Microporous Metal-Organic Framework in Mixed-Matrix Membrane : Pore-Tailoring Optimization for C2 H2 /C2 H4 Separation

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 13 vom: 11. März, Seite e2204553
1. Verfasser: Xu, Tong (VerfasserIn)
Weitere Verfasser: Zhang, Panpan, Cui, Fengchao, Li, Jiantang, Kan, Liang, Tang, Baobing, Zou, Xiaoqin, Liu, Yunling, Zhu, Guangshan
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article C2H2 separation mixed-matrix membranes reticular chemistry ultra-microporous MOFs
Beschreibung
Zusammenfassung:© 2023 Wiley-VCH GmbH.
Effective separation of ethyne from ethyne/ethylene (C2 H2 /C2 H4 ) mixtures is a challenging and crucial industrial process. Herein, an ultra-microporous metal-organic framework (MOF) platform, Cd(dicarboxylate)2 (ditriazole), with triangular channels is proposed for high-efficiency separation of C2 H2 from C2 H4 . The targeted structures are constructed via a mixed-ligand strategy by selecting different-sized ligands, allowing for tunable pore sizes and volumes. The pore properties can be further optimized by additional modification via pore environment tailoring. This concept leads to the successful synthesis of three ultra-microporous Cd-MOFs (JLU-MOF87-89). As intended, C2 H2 uptake and C2 H2 /C2 H4 selectivity gradually increase with progressively optimizing the pore structure by adjusting ligand length and substituents. JLU-MOF89, functionalized with methyl groups, features the most optimal pore chemistry and shows selective recognition of C2 H2 over C2 H4 , owing to the framework-C2 H2 host-guest interactions. Furthermore, JLU-MOFs are fabricated into mixed-matrix membranes for C2 H2 /C2 H4 separation. C2 H2 permeability and C2 H2 /C2 H4 permselectivity are substantially enhanced by ≥400% and ≥200%, respectively, after hybridization of JLU-MOF88 and JLU-MOF89 with a polyimide polymer (6FDA-ODA). These membranes can work efficiently and are stable under different conditions, demonstrating their potential in actual ethyne separation
Beschreibung:Date Completed 29.03.2023
Date Revised 29.03.2023
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202204553