Facile Determination of Dissolved Species in CO_2-Amine-H_2O System by NMR Spectroscopy
In order to clarify the characteristic behavior of dissolved state of CO<SUB>2</SUB> in alkanolamine-H<SUB>2</SUB>O system five different kinds of alkanolamines were examined spectroscopically under the following conditions: 40 °C for 30 min to 120 min. NMR analysis indicated the presence of five chemical species such as carbamate ion, free amine, bicarbonate, carbonate, and protonated amine. Based on proton NMR, distribution of the respective species against molar loading of CO<SUB>2</SUB> was successfully evaluated.
- Chemistry letters
Chemistry letters 1996(9), 777-778, 1996-09
The Chemical Society of Japan