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Molecular Design of High Capacity, Low Viscosity, Chemically Tunable Ionic Liquids for CO2 Capture
Abstract
The discovery of materials that combine selectively, controllably, and reversibly with CO 2 is a key challenge for realizing practical carbon capture from flue gas and other point sources. We report the design of ionic liquids (ILs) with properties tailored to this CO 2 separation problem. Atomistic simulations predict that suitably substituted aprotic heterocyclic anions, or “AHAs,” bind CO 2 with energies that can be controlled over a wide range suitable to gas separations. Further, unlike all previously known CO 2 -binding ILs, the AHA IL viscosity is predicted to be insensitive to CO 2 . Spectroscopic, temperature-dependent absorption, rheological, and calorimetric measurements on trihexyl(tetradecyl)-phosphonium 2-cyanopyrrolide ([P 66614 ][2-CNpyr]) show CO 2 uptakes close to prediction as well as insignificant changes in viscosity in the presence of CO 2 . A pyrazolide-based AHA IL behaves qualitatively similarly but with weaker binding energy. The results demonstrate the intrinsic design advantages of ILs as a platform for CO 2 separations.
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Cited by
Carbon capture and storage (CCS): the way forward
Bui, M., Adjiman, C. S., Bardow, A., Anthony, E. J., Boston, A., Brown, S., Fennell, P. S., Fuss, S., Galindo, A., Hackett, L. A., et al. (2018) · Energy & Environmental Science · doi:10.1039/c7ee02342a · Cited by 4,374
State-of-the-Art of CO2Capture with Ionic Liquids
Ramdin, M., de Loos, T. W., & Vlugt, T. J. H. (2012) · Industrial & Engineering Chemistry Research · doi:10.1021/ie3003705 · Cited by 1,073
Carbon Dioxide Capture with Ionic Liquids and Deep Eutectic Solvents: A New Generation of Sorbents
Sarmad, S., Mikkola, J., & Ji, X. (2017) · ChemSusChem · doi:10.1002/cssc.201600987 · Cited by 406
A review on progress made in direct air capture of CO 2
Sodiq, A., Abdullatif, Y., Aissa, B., Ostovar, A., Nassar, N., El-Naas, M., & Amhamed, A. (2023) · Environmental Technology & Innovation · doi:10.1016/j.eti.2022.102991 · Cited by 285
Switching the Reaction Course of Electrochemical CO 2 Reduction with Ionic Liquids
Sun, L., Ramesha, G. K., Kamat, P. V., & Brennecke, J. F. (2014) · Langmuir · doi:10.1021/la5009076 · Cited by 279
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Metadata
- Authors
- Gurkan, B., Goodrich, B. F., Mindrup, E. M., Ficke, L. E., Massel, M., Seo, S., Senftle, T. P., Wu, H., Glaser, M. F., Shah, J. K., Maginn, E. J., Brennecke, J. F., & Schneider, W. F.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-12-03
- Volume
- 1
- Issue
- 24
- Pages
- 3494-3499
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2319729550
- Cited by
- 454
- References
- 0
- FWCI
- 7.44
- Type
- journal article
- Language
- en
- Open access
- closed
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- Gurkan, B., Goodrich, B. F., Mindrup, E. M., Ficke, L. E., Massel, M., Seo, S., Senftle, T. P., Wu, H., Glaser, M. F., Shah, J. K., Maginn, E. J., Brennecke, J. F., & Schneider, W. F. (2010). Molecular Design of High Capacity, Low Viscosity, Chemically Tunable Ionic Liquids for CO2 Capture. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz101533k
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