Details
| Original language | English |
|---|---|
| Article number | e202300262 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 62 |
| Issue number | 15 |
| Early online date | 2 Feb 2023 |
| Publication status | Published - 26 Mar 2023 |
Abstract
Azeotropic organic solvent mixture separation is common in the chemical industry but extremely difficult. Zeolitic imidazolate framework-67 (ZIF-67) shows great potential in organic solvent mixture separation due to its rigid micropores and excellent stability. However, due to the fast nucleation rate, it is a great challenge to prepare continuous ZIF-67 membrane layers with ultrathin thickness. In this study, a hydroxy salt layer with high inducible activity was synthesized as a precursor on different porous substrates to prepare ZIF-67 membranes at room temperature. The precursor layer enables an intact ZIF-67 membrane with an ultrathin thickness of 176±12 nm. The experimental and simulation results confirmed that the size sieving through the pore windows and the preferential adsorption of polar solvent molecules provide the ZIF-67 membrane an unprecedented separation performance such as high separation factors and fluxes, for four types of azeotropic organic solvent mixtures.
Keywords
- Azeotropic Organic Mixtures, Hydroxy Salt, Membrane Separation, Metal–Organic Frameworks (MOFs)
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
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In: Angewandte Chemie - International Edition, Vol. 62, No. 15, e202300262, 26.03.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Facile Fabrication of a Continuous ZIF-67 Membrane for Efficient Azeotropic Organic Solvent Mixture Separation
AU - Sun, Hao
AU - Wang, Fengkai
AU - Li, Xiaoting
AU - Caro, Jürgen
AU - Meng, Hong
AU - Wang, Naixin
AU - An, Quan Fu
N1 - Funding Information: We gratefully acknowledge the funding from the Natural Science Foundation of China (22178008, 22125801).
PY - 2023/3/26
Y1 - 2023/3/26
N2 - Azeotropic organic solvent mixture separation is common in the chemical industry but extremely difficult. Zeolitic imidazolate framework-67 (ZIF-67) shows great potential in organic solvent mixture separation due to its rigid micropores and excellent stability. However, due to the fast nucleation rate, it is a great challenge to prepare continuous ZIF-67 membrane layers with ultrathin thickness. In this study, a hydroxy salt layer with high inducible activity was synthesized as a precursor on different porous substrates to prepare ZIF-67 membranes at room temperature. The precursor layer enables an intact ZIF-67 membrane with an ultrathin thickness of 176±12 nm. The experimental and simulation results confirmed that the size sieving through the pore windows and the preferential adsorption of polar solvent molecules provide the ZIF-67 membrane an unprecedented separation performance such as high separation factors and fluxes, for four types of azeotropic organic solvent mixtures.
AB - Azeotropic organic solvent mixture separation is common in the chemical industry but extremely difficult. Zeolitic imidazolate framework-67 (ZIF-67) shows great potential in organic solvent mixture separation due to its rigid micropores and excellent stability. However, due to the fast nucleation rate, it is a great challenge to prepare continuous ZIF-67 membrane layers with ultrathin thickness. In this study, a hydroxy salt layer with high inducible activity was synthesized as a precursor on different porous substrates to prepare ZIF-67 membranes at room temperature. The precursor layer enables an intact ZIF-67 membrane with an ultrathin thickness of 176±12 nm. The experimental and simulation results confirmed that the size sieving through the pore windows and the preferential adsorption of polar solvent molecules provide the ZIF-67 membrane an unprecedented separation performance such as high separation factors and fluxes, for four types of azeotropic organic solvent mixtures.
KW - Azeotropic Organic Mixtures
KW - Hydroxy Salt
KW - Membrane Separation
KW - Metal–Organic Frameworks (MOFs)
UR - http://www.scopus.com/inward/record.url?scp=85149318946&partnerID=8YFLogxK
U2 - 10.1002/anie.202300262
DO - 10.1002/anie.202300262
M3 - Article
AN - SCOPUS:85149318946
VL - 62
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 15
M1 - e202300262
ER -