Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 2965-2968 |
| Seitenumfang | 4 |
| Fachzeitschrift | Angewandte Chemie International Edition |
| Jahrgang | 56 |
| Ausgabenummer | 11 |
| Frühes Online-Datum | 6 März 2017 |
| Publikationsstatus | Veröffentlicht - 2017 |
| Extern publiziert | Ja |
Abstract
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Chemische Verfahrenstechnik (insg.)
- Katalyse
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in: Angewandte Chemie International Edition, Jahrgang 56, Nr. 11, 2017, S. 2965-2968.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - A Metal Chelating Porous Polymeric Support: The Missing Link for a Defect-free Metal-Organic Framework Composite Membrane
AU - Barankova, Eva
AU - Tan, Xiaoyu
AU - Villalobos, Luis Francisco
AU - Litwiller, Eric
AU - Peinemann, Klaus-Viktor
N1 - Publisher Copyright: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017
Y1 - 2017
N2 - Since the discovery of size-selective metal-organic frameworks (MOFs), researchers have tried to incorporate these materials into gas separation membranes. Impressive gas selectivities were found, but these MOF membranes were mostly made on inorganic supports, which are generally too bulky and expensive for industrial gas separation. Forming MOF layers on porous polymer supports is industrially attractive but technically challenging. Two features to overcome these problems are described: 1) a metal chelating support polymer to bind the MOF layer, and 2) control of MOF crystal growth by contra-diffusion, aiming at a very thin nanocrystalline MOF layer. Using a metal chelating polythiosemicarbazide (PTSC) support and adjusting the metal and organic ligand concentrations carefully, a very compact ZIF-8 (ZIF=zeolitic imidazolate framework) layer was produced that displayed interference colors because of its smooth surface and extreme thinness-within the range of visible light. High performances were measured in terms of hydrogen/propane (8350) and propylene/propane (150) selectivity.
AB - Since the discovery of size-selective metal-organic frameworks (MOFs), researchers have tried to incorporate these materials into gas separation membranes. Impressive gas selectivities were found, but these MOF membranes were mostly made on inorganic supports, which are generally too bulky and expensive for industrial gas separation. Forming MOF layers on porous polymer supports is industrially attractive but technically challenging. Two features to overcome these problems are described: 1) a metal chelating support polymer to bind the MOF layer, and 2) control of MOF crystal growth by contra-diffusion, aiming at a very thin nanocrystalline MOF layer. Using a metal chelating polythiosemicarbazide (PTSC) support and adjusting the metal and organic ligand concentrations carefully, a very compact ZIF-8 (ZIF=zeolitic imidazolate framework) layer was produced that displayed interference colors because of its smooth surface and extreme thinness-within the range of visible light. High performances were measured in terms of hydrogen/propane (8350) and propylene/propane (150) selectivity.
KW - composite membranes
KW - contra-diffusion
KW - gas separation
KW - metal–organic frameworks
KW - propylene/propane separation
UR - http://www.scopus.com/inward/record.url?scp=85011982929&partnerID=8YFLogxK
U2 - 10.1002/anie.201611927
DO - 10.1002/anie.201611927
M3 - Article
VL - 56
SP - 2965
EP - 2968
JO - Angewandte Chemie International Edition
JF - Angewandte Chemie International Edition
SN - 1433-7851
IS - 11
ER -