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Mixed-linker strategy for suppressing structural flexibility of metal-organic framework membranes for gas separation

Chemistry

Mixed-linker strategy for suppressing structural flexibility of metal-organic framework membranes for gas separation

C. Chang, T. Ko, et al.

Discover groundbreaking advancements in gas separation using CAU-10-based membranes! This innovative study reveals how a mixed-linker strategy enhances membrane stability and improves CO₂/CH₄ separation performance. Explore the transformative potential of this research conducted by a team of experts from National Taiwan University and Sogang University.

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Playback language: English
Abstract
Structural flexibility in metal-organic framework (MOF) membranes hinders their use in gas separation. This study introduces a mixed-linker approach to improve the stability of CAU-10-based membranes. Partial substitution of the PDC linker with BDC (30 mol%) in CAU-10-PDC significantly enhances stability and reduces aperture size. The optimized CAU-10-PDC-H (70/30) membrane shows high CO₂/CH₄ separation performance (separation factor of 74.2 and CO₂ permeability of 1111.1 Barrer). In situ XRD, DRIFT spectroscopy, and DFT calculations reveal the mechanism behind the enhanced stability.
Publisher
Communications Chemistry
Published On
Jun 10, 2023
Authors
Chung-Kai Chang, Ting-Rong Ko, Tsai-Yu Lin, Yen-Chun Lin, Hyun Jung Yu, Jong Suk Lee, Yi-Pei Li, Heng-Liang Wu, Dun-Yen Kang
Tags
metal-organic frameworks
gas separation
stability
membranes
CO₂/CH₄ separation
mixed-linker approach
PDC linker

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