Hydrocarbon Sorption in Flexible MOFs—Part III: Modulation of Gas Separation Mechanisms

Preißler-Kurzhöfer, Hannes; Lange, Marcus; Möllmer, Jens; Erhart, Oliver; Kobalz, Merten; Krautscheid, Harald; Gläser, Roger

doi:10.3390/nano14030241

Open AccessArticle

Hydrocarbon Sorption in Flexible MOFs—Part III: Modulation of Gas Separation Mechanisms

by

Hannes Preißler-Kurzhöfer

^1,2,*,

Marcus Lange

²,

Jens Möllmer

²,

Oliver Erhart

³,

Merten Kobalz

³,

Harald Krautscheid

³

and

Roger Gläser

^2,*

¹

Institut für Technische Chemie, Fakultät für Chemie und Mineralogie, Universität Leipzig, Linnéstraße 3, D-04103 Leipzig, Germany

²

Institut für Nichtklassische Chemie e.V., Universität Leipzig, Permoserstraße 15, D-04318 Leipzig, Germany

³

Institut für Anorganische Chemie, Fakultät für Chemie und Mineralogie, Universität Leipzig, Johannisallee 21, D-04103 Leipzig, Germany

^*

Authors to whom correspondence should be addressed.

Nanomaterials 2024, 14(3), 241; https://doi.org/10.3390/nano14030241

Submission received: 17 December 2023 / Revised: 15 January 2024 / Accepted: 18 January 2024 / Published: 23 January 2024

(This article belongs to the Special Issue Advanced Nanomaterials for Gas Capture, Separation and Storage)

Download

Browse Figures

Review Reports Versions Notes

Abstract

Single gas sorption experiments with the C4-hydrocarbons n-butane, iso-butane, 1-butene and iso-butene on the flexible MOFs Cu-IHMe-pw and Cu-IHEt-pw were carried out with both thermodynamic equilibrium and overall sorption kinetics. Subsequent static binary gas mixture experiments of n-butane and iso-butane unveil a complex dependence of the overall selectivity on sorption enthalpy, rate of structural transition as well as steric effects. A thermodynamic separation favoring iso-butane as well as kinetic separation favoring n-butane are possible within Cu-IHMe-pw while complete size exclusion of iso-butane is achieved in Cu-IHEt-pw. This proof-of-concept study shows that the structural flexibility offers additional levers for the precise modulation of the separation mechanisms for complex mixtures with similar chemical and physical properties with real selectivities of >10.

Keywords: metal–organic frameworks; gas mixture separation; flexible materials

Share and Cite

MDPI and ACS Style

Preißler-Kurzhöfer, H.; Lange, M.; Möllmer, J.; Erhart, O.; Kobalz, M.; Krautscheid, H.; Gläser, R. Hydrocarbon Sorption in Flexible MOFs—Part III: Modulation of Gas Separation Mechanisms. Nanomaterials 2024, 14, 241. https://doi.org/10.3390/nano14030241

AMA Style

Preißler-Kurzhöfer H, Lange M, Möllmer J, Erhart O, Kobalz M, Krautscheid H, Gläser R. Hydrocarbon Sorption in Flexible MOFs—Part III: Modulation of Gas Separation Mechanisms. Nanomaterials. 2024; 14(3):241. https://doi.org/10.3390/nano14030241

Chicago/Turabian Style

Preißler-Kurzhöfer, Hannes, Marcus Lange, Jens Möllmer, Oliver Erhart, Merten Kobalz, Harald Krautscheid, and Roger Gläser. 2024. "Hydrocarbon Sorption in Flexible MOFs—Part III: Modulation of Gas Separation Mechanisms" Nanomaterials 14, no. 3: 241. https://doi.org/10.3390/nano14030241

APA Style

Preißler-Kurzhöfer, H., Lange, M., Möllmer, J., Erhart, O., Kobalz, M., Krautscheid, H., & Gläser, R. (2024). Hydrocarbon Sorption in Flexible MOFs—Part III: Modulation of Gas Separation Mechanisms. Nanomaterials, 14(3), 241. https://doi.org/10.3390/nano14030241

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Menu

Hydrocarbon Sorption in Flexible MOFs—Part III: Modulation of Gas Separation Mechanisms

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI