Details
| Original language | English |
|---|---|
| Article number | 889 |
| Journal | Molecules |
| Volume | 23 |
| Issue number | 4 |
| Early online date | 11 Apr 2018 |
| Publication status | E-pub ahead of print - 11 Apr 2018 |
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.
Keywords
- Membrane permeation, Olefin/paraffin separation, Pressure swing adsorption (PSA), ZIF-4
ASJC Scopus subject areas
- Chemistry(all)
- Analytical Chemistry
- Chemistry(all)
- Chemistry (miscellaneous)
- Biochemistry, Genetics and Molecular Biology(all)
- Molecular Medicine
- Pharmacology, Toxicology and Pharmaceutics(all)
- Pharmaceutical Science
- Pharmacology, Toxicology and Pharmaceutics(all)
- Drug Discovery
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemistry(all)
- Organic Chemistry
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In: Molecules, Vol. 23, No. 4, 889, 11.04.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Continuous Separation of Light Olefin/Paraffin Mixtures on ZIF-4 by Pressure Swing Adsorption and Membrane Permeation
AU - Hovestadt, Maximilian
AU - Friebe, Sebastian
AU - Helmich, Lailah
AU - Lange, Marcus
AU - Möllmer, Jens
AU - Gläser, Roger
AU - Mundstock, Alexander
AU - Hartmann, Martin
N1 - Funding information: Acknowledgments: Financial support for this work by the German Science Foundation (Deutsche Forschungsgemeinschaft, DFG) in the frame of the priority program SPP 1570 under contract HA 2527/12-3 is gratefully acknowledged. The authors of this work are also grateful for the financial support from the EU 7th Framework Project M4CO2 (Grant Agreement No 608490), organized by Freek Kapteijn and Jorge Gascon. We also thank Jürgen Caro for stimulating discussions. Financial support for this work by the German Science Foundation (Deutsche Forschungsgemeinschaft, DFG) in the frame of the priority program SPP 1570 under contract HA 2527/12-3 is gratefully acknowledged. The authors of this work are also grateful for the financial support from the EU 7th Framework Project M4CO2 (Grant Agreement No 608490), organized by Freek Kapteijn and Jorge Gascon. We also thank J rgen Caro for stimulating discussions.
PY - 2018/4/11
Y1 - 2018/4/11
N2 - 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.
AB - 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.
KW - Membrane permeation
KW - Olefin/paraffin separation
KW - Pressure swing adsorption (PSA)
KW - ZIF-4
UR - http://www.scopus.com/inward/record.url?scp=85045278484&partnerID=8YFLogxK
U2 - 10.3390/molecules23040889
DO - 10.3390/molecules23040889
M3 - Article
C2 - 29641508
AN - SCOPUS:85045278484
VL - 23
JO - Molecules
JF - Molecules
SN - 1420-3049
IS - 4
M1 - 889
ER -