Abstract
The compositions of aqueous 2-aminoethanol solutions used in industry for absorption of carbon dioxide resulting from combustion of natural gas have been determined by 1H and 13C NMR spectroscopy. The absorption process does not involve generally accepted paths of thermal decomposition of the absorbent in the reaction with carbon dioxide, but the main path is non-oxidative decomposition of 2-aminoethanol into ammonia and ethylene oxide. Splitting of the NMR signals of carbamate anion formed by reaction of 2-aminoethanol with carbon dioxide has been rationalized by specific structure of the anion due to intramolecular hydrogen bonding.
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References
Kohl, A.L. and Riesenfeld, F.C., Gas Purification, New York: McGraw-Hill, 1960.
Zoannou, K.S., Ph.D. Thesis, Cardiff, 2011.
Mani, F., Peruzzini, M., and Stoppioni, P., Green Chem., 2006, p. 995.
Knudsen, J.N., Jensen, J.N., and Vilhelmsen, O., Energy Procedia, 2009, vol. 1, p. 783.
Shi, S. and Rochelle, G.T., Ind. Eng. Chem. Res., 2002, vol. 41, p. 4178.
Strazisar, B.R., Anderson, R.R., and White, C.M., Energy Fuels, 2003, vol. 17, p. 1034.
Lepaumier, H., da Silva, E.F., Einbu, A., Grimstvedt, A., Knudsen, J.N., Zahlsen, K., and Svendsen, H.F., Energy Procedia, 2011, vol. 3, p. 1652.
Talzi, V.P., Khim. Prom-st., 2014, p. 244.
Talzi, V.P., Khim. Prom-st., 2010, p. 89.
Savin, V.P., Talzi, V.P., and Bek, N.O., Zh. Org. Khim., 1984, vol. 20, p. 1842.
Breitmaier, E., Structure Elucidation by NMR in Organic Chemistry: A Practical Guide, Chichester: Wiley, 2002, 3rd ed.
Joris, S.J., Aspila, K.T., and Chakrabarty, C.L., Anal. Chem., 1969, vol. 41, p. 1441.
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Original Russian Text © V.P. Talzi, 2016, published in Zhurnal Organicheskoi Khimii, 2016, Vol. 52, No. 7, pp. 935–939.
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Talzi, V.P. NMR study of the composition of aqueous 2-aminoethanol solution used for absorption of carbon dioxide from fuel gases. Russ J Org Chem 52, 927–931 (2016). https://doi.org/10.1134/S1070428016070010
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DOI: https://doi.org/10.1134/S1070428016070010