Random organic framework membranes with hierarchical channels for H2 separation

Liping Luan; Puxin Shi; Zhi Wang; Freek Kapteijn; Xinlei Liu

doi:10.1016/j.memsci.2024.122420

Random organic framework membranes with hierarchical channels for H₂ separation

Liping Luan, Puxin Shi, Zhi Wang, Freek Kapteijn, Xinlei Liu^*

^*Corresponding author for this work

ChemE/Catalysis Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

Novel membrane materials for H₂ separation are wanted. How to overcome the “trade-off” between membrane permeability and selectivity is a tough challenge. Here we report new random organic framework membranes with benzimidazole and imine linkages to form hierarchical channels. Both high H₂-selective and fast H₂ transport pathways are created. The preparation parameters are thoroughly studied and the membrane structures are well characterized by SEM, AFM, NMR, XPS, gas sorption, etc. Effect of feed conditions on membrane performance, such as composition, pressure and temperature, is investigated. The membrane performance transcends the upper bounds of H₂/CO₂, H₂/N₂ and H₂/CH₄ with excellent stability.

Original language	English
Article number	122420
Number of pages	8
Journal	Journal of Membrane Science
Volume	694
DOIs	https://doi.org/10.1016/j.memsci.2024.122420
Publication status	Published - 2024

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Funding

This work was financially supported by the National Key Research and Development Program ( 2021YFB3801200 ), the National Natural Science Foundation of China ( 22008171 ), the Inner Mongolia Autonomous Region Unveiling Project ( 2022JBGS0027 ), and the Independent Innovation Funding of Tianjin University (No. 2023XJD-0067 ). The authors were grateful to Dr. D. Osadchii from TUDelft for his valuable discussion.

Keywords

Benzimidazole and imine linked polymer
H separation
Hierarchical channels
Random organic framework membranes

Access to Document

10.1016/j.memsci.2024.122420

Cite this

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title = "Random organic framework membranes with hierarchical channels for H2 separation",

abstract = "Novel membrane materials for H2 separation are wanted. How to overcome the “trade-off” between membrane permeability and selectivity is a tough challenge. Here we report new random organic framework membranes with benzimidazole and imine linkages to form hierarchical channels. Both high H2-selective and fast H2 transport pathways are created. The preparation parameters are thoroughly studied and the membrane structures are well characterized by SEM, AFM, NMR, XPS, gas sorption, etc. Effect of feed conditions on membrane performance, such as composition, pressure and temperature, is investigated. The membrane performance transcends the upper bounds of H2/CO2, H2/N2 and H2/CH4 with excellent stability.",

keywords = "Benzimidazole and imine linked polymer, H separation, Hierarchical channels, Random organic framework membranes",

author = "Liping Luan and Puxin Shi and Zhi Wang and Freek Kapteijn and Xinlei Liu",

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AU - Luan, Liping

AU - Shi, Puxin

AU - Wang, Zhi

AU - Kapteijn, Freek

AU - Liu, Xinlei

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2024

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N2 - Novel membrane materials for H2 separation are wanted. How to overcome the “trade-off” between membrane permeability and selectivity is a tough challenge. Here we report new random organic framework membranes with benzimidazole and imine linkages to form hierarchical channels. Both high H2-selective and fast H2 transport pathways are created. The preparation parameters are thoroughly studied and the membrane structures are well characterized by SEM, AFM, NMR, XPS, gas sorption, etc. Effect of feed conditions on membrane performance, such as composition, pressure and temperature, is investigated. The membrane performance transcends the upper bounds of H2/CO2, H2/N2 and H2/CH4 with excellent stability.

AB - Novel membrane materials for H2 separation are wanted. How to overcome the “trade-off” between membrane permeability and selectivity is a tough challenge. Here we report new random organic framework membranes with benzimidazole and imine linkages to form hierarchical channels. Both high H2-selective and fast H2 transport pathways are created. The preparation parameters are thoroughly studied and the membrane structures are well characterized by SEM, AFM, NMR, XPS, gas sorption, etc. Effect of feed conditions on membrane performance, such as composition, pressure and temperature, is investigated. The membrane performance transcends the upper bounds of H2/CO2, H2/N2 and H2/CH4 with excellent stability.

KW - Benzimidazole and imine linked polymer

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