Details
| Original language | English |
|---|---|
| Pages (from-to) | 185-193 |
| Number of pages | 9 |
| Journal | Journal of membrane science |
| Volume | 516 |
| Early online date | 15 Jun 2016 |
| Publication status | Published - 15 Oct 2016 |
Abstract
A novel supported thin NH2-MIL-125 MOF layer has been prepared and evaluated as a new membrane in the separation of an equimolar hydrogen (H2)/carbon dioxide (CO2) mixture at different temperatures. Additionally, Mixed-Matrix-Membranes (MMMs), consisting of the NH2-MIL-125 MOF powder and Matrimid as continuous polymer matrix, were prepared and investigated for the same separation process. Permeation measurements were performed at 150 °C and varying feed pressures (3, 4, 5 bar), thus simulating the pre-combustion process for CO2 sequestration. Since NH2-MIL-125 has free amine groups in its pore system, the attractive interaction with the polar acidic molecule CO2 is expected to retain it in comparison to H2, resulting in an enhanced separation performance. For the neat supported NH2-MIL-125 membrane, the H2 permeability is indeed by the factor of 8 larger than that of CO2 at room temperature. In case of the MMMs, the addition of the MOF powder enhances both the permeability and the selectivity in comparison to the neat polymer Matrimid.
Keywords
- Amine-functionalization, Hydrogen (H)/carbon dioxide (CO) separation, Mixed-Matrix-Membrane (MMMS), Supported NH-MIL-125 membrane, Van-der-Waals interaction
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Materials Science(all)
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Journal of membrane science, Vol. 516, 15.10.2016, p. 185-193.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - NH2-MIL-125 as membrane for carbon dioxide sequestration
T2 - Thin supported MOF layers contra Mixed-Matrix-Membranes
AU - Friebe, S.
AU - Mundstock, A.
AU - Unruh, D.
AU - Renz, F.
AU - Caro, J.
N1 - Funding Information: The authors of this work are grateful for the financial support from the EU 7th Framework Project M 4 CO 2 (Grant Agreement No 608490 ), organized by F. Kapteijn and J. Gascon. D. Unruh acknowledges support from Hannover School of Nanotechnology. F. Renz is thankful for financial support from Deutsche Forschungsgemeinschaft ( RE1627/1-3 ).
PY - 2016/10/15
Y1 - 2016/10/15
N2 - A novel supported thin NH2-MIL-125 MOF layer has been prepared and evaluated as a new membrane in the separation of an equimolar hydrogen (H2)/carbon dioxide (CO2) mixture at different temperatures. Additionally, Mixed-Matrix-Membranes (MMMs), consisting of the NH2-MIL-125 MOF powder and Matrimid as continuous polymer matrix, were prepared and investigated for the same separation process. Permeation measurements were performed at 150 °C and varying feed pressures (3, 4, 5 bar), thus simulating the pre-combustion process for CO2 sequestration. Since NH2-MIL-125 has free amine groups in its pore system, the attractive interaction with the polar acidic molecule CO2 is expected to retain it in comparison to H2, resulting in an enhanced separation performance. For the neat supported NH2-MIL-125 membrane, the H2 permeability is indeed by the factor of 8 larger than that of CO2 at room temperature. In case of the MMMs, the addition of the MOF powder enhances both the permeability and the selectivity in comparison to the neat polymer Matrimid.
AB - A novel supported thin NH2-MIL-125 MOF layer has been prepared and evaluated as a new membrane in the separation of an equimolar hydrogen (H2)/carbon dioxide (CO2) mixture at different temperatures. Additionally, Mixed-Matrix-Membranes (MMMs), consisting of the NH2-MIL-125 MOF powder and Matrimid as continuous polymer matrix, were prepared and investigated for the same separation process. Permeation measurements were performed at 150 °C and varying feed pressures (3, 4, 5 bar), thus simulating the pre-combustion process for CO2 sequestration. Since NH2-MIL-125 has free amine groups in its pore system, the attractive interaction with the polar acidic molecule CO2 is expected to retain it in comparison to H2, resulting in an enhanced separation performance. For the neat supported NH2-MIL-125 membrane, the H2 permeability is indeed by the factor of 8 larger than that of CO2 at room temperature. In case of the MMMs, the addition of the MOF powder enhances both the permeability and the selectivity in comparison to the neat polymer Matrimid.
KW - Amine-functionalization
KW - Hydrogen (H)/carbon dioxide (CO) separation
KW - Mixed-Matrix-Membrane (MMMS)
KW - Supported NH-MIL-125 membrane
KW - Van-der-Waals interaction
UR - http://www.scopus.com/inward/record.url?scp=84975894238&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2016.06.015
DO - 10.1016/j.memsci.2016.06.015
M3 - Article
AN - SCOPUS:84975894238
VL - 516
SP - 185
EP - 193
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
ER -