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Kinetics and Mechanism of Carbamate Formation from CO2(aq), Carbonate Species, and Monoethanolamine in Aqueous Solution
Abstract
Removal of carbon dioxide from fossil-based power generation is a potentially useful technique for the reduction of greenhouse gas emissions. Reversible interaction with aqueous amine solutions is most promising. In this process, the formation of carbamates is an important reaction of carbon dioxide. In this contribution, a detailed molecular reaction mechanism for the carbamate formation between MEA (monoethanolamine) and dissolved CO(2) as well as carbonate species in aqueous solution is presented. There are three parallel, reversible reactions of the free amine with CO(2), carbonic acid, and the bicarbonate ion; the relative importance of the three paths is strongly pH dependent. Kinetic and equilibrium measurements are based on (1)H NMR and stopped-flow measurements with rate constants, equilibrium constants, and protonation constants being reported.
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Cited by
Puxty, G., Rowland, R., Allport, A., Yang, Q., Bown, M., Burns, R., Maeder, M., & Attalla, M. (2009) · Environmental Science & Technology · doi:10.1021/es901376a · Cited by 572
Self-citationCarbon dioxide utilization with C–N bond formation: carbon dioxide capture and subsequent conversion
Yang, Z.-Z., He, L.-N., Gao, J., Liu, A.-H., & Yu, B. (2012) · Energy & Environmental Science · doi:10.1039/c2ee02774g · Cited by 520
Lv, B., Guo, B., Zhou, Z., & Jing, G. (2015) · Environmental Science & Technology · doi:10.1021/acs.est.5b02356 · Cited by 472
Direct catalytic hydrogenation of CO2 to formate over a Schiff-base-mediated gold nanocatalyst
Liu, Q., Yang, X., Li, L., Miao, S., Li, Y., Li, Y., Wang, X., Huang, Y., & Zhang, T. (2017) · Nature Communications · doi:10.1038/s41467-017-01673-3 · Cited by 265
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Metadata
- Authors
- McCann, N., Phan, D., Wang, X., Conway, W., Burns, R., Attalla, M., Puxty, G., & Maeder, M.
- Venue
- The Journal of Physical Chemistry A
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-04-01
- Volume
- 113
- Issue
- 17
- Pages
- 5022-5029
- ISSN
- 1089-5639 (ISSN-L)
- 1520-5215
- OpenAlex
- W2138830031
- Cited by
- 247
- References
- 0
- FWCI
- 23.29
- Type
- journal article
- Language
- en
- Open access
- closed
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- McCann, N., Phan, D., Wang, X., Conway, W., Burns, R., Attalla, M., Puxty, G., & Maeder, M. (2009). Kinetics and Mechanism of Carbamate Formation from CO2(aq), Carbonate Species, and Monoethanolamine in Aqueous Solution. The Journal of Physical Chemistry A. https://doi.org/10.1021/jp810564z
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