Continuous Separation of light olefin/paraffin mixtures on ZIF-4 by pressure swing adsorption and membrane permeation

Download statistics - Document (COUNTER):

Hovestadt, M.; Friebe, S.; Helmich, L.; Lange, M.; Möllmer, J. et al.: Continuous Separation of light olefin/paraffin mixtures on ZIF-4 by pressure swing adsorption and membrane permeation. In: Molecules 23 (2018), Nr. 4, 889. DOI:

Repository version

To cite the version in the repository, please use this identifier:

Selected time period:


Sum total of downloads: 150

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. © 2018 by the authors.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Naturwissenschaftliche Fakultät

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 98 65.33%
2 image of flag of United States United States 22 14.67%
3 image of flag of China China 12 8.00%
4 image of flag of Russian Federation Russian Federation 2 1.33%
5 image of flag of United Kingdom United Kingdom 2 1.33%
6 image of flag of Czech Republic Czech Republic 2 1.33%
7 image of flag of Taiwan Taiwan 1 0.67%
8 image of flag of Portugal Portugal 1 0.67%
9 image of flag of Netherlands Netherlands 1 0.67%
10 image of flag of Malaysia Malaysia 1 0.67%
    other countries 8 5.33%

Further download figures and rankings:


Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.

Search the repository