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Confinement of Ionic Liquids in Nanocages: Tailoring the Molecular Sieving Properties of ZIF‐8 for Membrane‐Based CO2 Capture
Abstract
Fine‐tuning of effective pore size of microporous materials is necessary to achieve precise molecular sieving properties. Herein, we demonstrate that room temperature ionic liquids can be used as cavity occupants for modification of the microenvironment of MOF nanocages. Targeting CO 2 capture applications, we tailored the effective cage size of ZIF‐8 to be between CO 2 and N 2 by confining an imidazolium‐based ionic liquid [bmim][Tf 2 N] into ZIF‐8’s SOD cages by in‐situ ionothermal synthesis. Mixed matrix membranes derived from ionic liquid‐modified ZIF‐8 exhibited remarkable combinations of permeability and selectivity that transcend the upper bound of polymer membranes for CO 2/N 2 and CO 2/CH 4 separation. We observed an unusual response of the membranes to varying pressure, that is, an increase in the CO 2/CH 4 separation factor with pressure, which is highly desirable for practical applications in natural gas upgrading.
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Citations
Cited by
Zhao, C., Dai, X., Yao, T., Chen, W., Wang, X., Wang, J., Yang, J., Wei, S., Wu, Y., & Li, Y. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.7b02736 · Cited by 1,365
Self-citationMetal–Organic Frameworks for Separation
Zhao, X., Wang, Y., Li, D., Bu, X., & Feng, P. (2018) · Advanced Materials · doi:10.1002/adma.201705189 · Cited by 1,305
CO2 Capture and Separations Using MOFs: Computational and Experimental Studies
Yu, J., Xie, L.-H., Li, J.-R., Ma, Y., Seminario, J. M., & Balbuena, P. B. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00626 · Cited by 1,047
Zhang, S., Zhang, J., Zhang, Y., & Deng, Y. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00509 · Cited by 659
Recent progress of fillers in mixed matrix membranes for CO 2 separation: A review
Vinoba, M., Bhagiyalakshmi, M., Alqaheem, Y., Alomair, A. A., Pérez, A., & Rana, M. S. (2017) · Separation and Purification Technology · doi:10.1016/j.seppur.2017.07.051 · Cited by 438
Metadata
- Authors
- Ban, Y., Li, Z., Li, Y., Peng, Y., Jin, H., Jiao, W., Guo, A., Wang, P., Yang, Q., Zhong, C., & Yang, W.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-10-30
- Volume
- 54
- Issue
- 51
- Pages
- 15483-15487
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2132172019
- Cited by
- 419
- References
- 0
- FWCI
- 24.52
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Ban, Y., Li, Z., Li, Y., Peng, Y., Jin, H., Jiao, W., Guo, A., Wang, P., Yang, Q., Zhong, C., & Yang, W. (2015). Confinement of Ionic Liquids in Nanocages: Tailoring the Molecular Sieving Properties of ZIF‐8 for Membrane‐Based CO2 Capture. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201505508
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