Journal
JOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume 47, Issue 6, Pages 1506-1509Publisher
AMER CHEMICAL SOC
DOI: 10.1021/je020093v
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The solubility of carbon dioxide and nitrous oxide in water + methyldiethanolamine and ethanol + methyldiethanolamine (MDEA) solutions was investigated over the whole range of amine concentrations. Experiments were performed in a reaction calorimeter at 293 K at constant atmospheric pressure. From the measurements of the solubilities of N2O in aqueous MDEA and of CO2 in pure amine, it was found that a N2O analogy for the prediction of CO2 solubility could not be used over the whole composition range of the aqueous MDEA solutions. In the case of ethanol + MDEA solutions, both gases show opposite trends for physical solubility as a function of amine concentration. These results disqualify the use of the N2O analogy in the estimation of CO2 solubility in ethanol + MDEA solutions.
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