Continuous Separation of Light Olefin/Paraffin Mixtures on ZIF-4 by Pressure Swing Adsorption and Membrane Permeation
Hovestadt M, Friebe S, Helmich L, Lange M, Möllmer J, Gläser R, Mundstock A, Hartmann M (2018)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2018
Journal
Publisher: MDPI
Book Volume: 23
Article Number: ARTN 889
Journal Issue: 4
DOI: 10.3390/molecules23040889
Abstract
In this study, two zeolitic imidazolate frameworks (ZIFs) called ZIF-4 and ZIF-zni (zni is the network topology) were characterized by sorption studies regarding their paraffin/olefin separation potential. In particular, equilibrated pure and mixed gas adsorption isotherms of ethane and ethene were recorded at 293 K up to 3 MPa. ZIF-4 exhibits selectivities for ethane in the range of 1.5-3, which is promising for continuous pressure swing adsorption (PSA). ZIF-4 shows high cycle stability with promising separation potential regarding ethane, which results in purification of the more industrial desired olefin. Furthermore, both ZIF materials were implemented in Matrimid to prepare a mixed matrix membrane (MMM) and were used in the continuous separation of a propane/propene mixture. The separation performance of the neat polymer is drastically increased after embedding porous ZIF-4 crystals in the Matrimid matrix, especially at higher feed pressures (3-5 barg). Due to the smaller kinetic diameter of the olefin, the permeability is higher compared to the paraffin.
Authors with CRIS profile
Maximilian Hovestadt
Interdisziplinäres Zentrum Erlangen Catalysis Resource Center (ECRC)
Martin Hartmann
Professur für Katalyse
Involved external institutions
Germany (DE)How to cite
APA:
Hovestadt, M., Friebe, S., Helmich, L., Lange, M., Möllmer, J., Gläser, R.,... Hartmann, M. (2018). Continuous Separation of Light Olefin/Paraffin Mixtures on ZIF-4 by Pressure Swing Adsorption and Membrane Permeation. Molecules, 23(4). https://dx.doi.org/10.3390/molecules23040889
MLA:
Hovestadt, Maximilian, et al. "Continuous Separation of Light Olefin/Paraffin Mixtures on ZIF-4 by Pressure Swing Adsorption and Membrane Permeation." Molecules 23.4 (2018).
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