SOLUBILITY OF N2O IN ALKANOLAMINES AND IN MIXED SOLVENTS

Abstract The solubility of N2O in pure alkanolamines (MEA, DEA, DIPA, TEA, MDEA and AMP) has been measured over the temperature range from 20 to 85 °C at exponential function of temperature. The densities of the pure alkanolamines were determined at temperatures from 20 to 90 °C. A semiempirical model in amine mixtures is presented. The model is based on the work by Prausnitz and Chueh, by Prausnitz and by Boublik and Hala. Correlations of experi out for eight systems (MDEA-H2O, AMP-H2O, DIPA-H2O, DEA-H2O, MEA-H2O, AMP-MDEA-H2O, AMP-TMS-H2O and DEA-EG-H2O) between concentrations. Comparison with the experimental results indicates that the model should be reliable for estimating the solubility of N2O in alkano solvents. The solubility data for pure amines and the correlation for mixed solvents may be applied to estimate the solubility of CO2 gas in pure o 2 analogy.

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