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Direct Air Capture of CO2 Using Amine Functionalized MIL-101(Cr)
Abstract
Direct adsorption of CO 2 from ambient air, also known as direct air capture (DAC), is gaining attention as a complementary approach to processes that capture CO 2 from more concentrated sources such as flue gas. Oxide-supported amine materials are effective materials for CO 2 capture from dilute gases, but less work has been done on metal organic framework (MOF) supported amine materials. Use of MOFs as supports for amines could be a versatile approach to the creation of effective amine adsorbents because of the tunability of MOF structures. In the present work, MIL-101(Cr) materials functionalized with amine species are evaluated for CO 2 capture from simulated air. Two amines are loaded into the MOF pores, tris (2-amino ethyl) (TREN) and low molecular weight, branched poly(ethylene imine) (PEI-800), at different amine loadings. The MIL-101(Cr)-TREN composites showed high CO 2 capacities for high loadings of TREN, but a significant loss of amines is observed over multicycle temperature swing adsorption experiments. In contrast, MIL-101(Cr)-PEI-800 shows better cyclic stability. The amine efficiency (mol CO 2 /mol amine) as a function of amine loading is used as a metric to characterize the adsorbents. The amine efficiency in MIL-101(Cr)-PEI-800 showed a strong dependence on the amine loading, with a step change to high amine efficiencies occurring at ∼0.8 mmol PEI/g MOF. The kinetics of CO 2 capture, which have important implications for the working capacity of the adsorbent, are also examined, demonstrating that a MIL-101(Cr)-PEI-800 sample with a 1–1.1 mmol PEI/g MOF loading has an excellent balance of CO 2 capacity and CO 2 adsorption kinetics.
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Cites
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Cited by
Carbon capture and conversion using metal–organic frameworks and MOF-based materials
Ding, M., Flaig, R. W., Jiang, H.-L., & Yaghi, O. M. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00829a · Cited by 2,616
Direct air capture: process technology, techno-economic and socio-political challenges
Erans, M., Sanz-Pérez, E. S., Hanak, D. P., Clulow, Z., Reiner, D. M., & Mutch, G. A. (2022) · Energy & Environmental Science · doi:10.1039/d1ee03523a · Cited by 688
Sorbents for the Direct Capture of CO 2 from Ambient Air
Shi, X., Xiao, H., Azarabadi, H., Song, J., Wu, X., Chen, X., & Lackner, K. S. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.201906756 · Cited by 679
Construction and application of base-stable MOFs: a critical review
Wang, K., Li, Y., Xie, L.-H., Li, X., & Li, J.-R. (2022) · Chemical Society Reviews · doi:10.1039/d1cs00891a · Cited by 462
A comparative energy and costs assessment and optimization for direct air capture technologies
Sabatino, F., Grimm, A., Gallucci, F., van Sint Annaland, M., Kramer, G. J., & Gazzani, M. (2021) · Joule · doi:10.1016/j.joule.2021.05.023 · Cited by 429
Metadata
- Authors
- Darunte, L. A., Oetomo, A. D., Walton, K. S., Sholl, D. S., & Jones, C. W.
- Venue
- ACS Sustainable Chemistry & Engineering
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-09-23
- Volume
- 4
- Issue
- 10
- Pages
- 5761-5768
- ISSN
- 2168-0485 (ISSN-L)
- OpenAlex
- W2511869034
- Cited by
- 353
- References
- 48
- FWCI
- 19.18
- Type
- journal article
- Language
- en
- Open access
- closed
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- Darunte, L. A., Oetomo, A. D., Walton, K. S., Sholl, D. S., & Jones, C. W. (2016). Direct Air Capture of CO2 Using Amine Functionalized MIL-101(Cr). ACS Sustainable Chemistry & Engineering. https://doi.org/10.1021/acssuschemeng.6b01692
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