SOLUBILITY OF METHANE IN AQUEOUS-SOLUTIONS OF 2-(2-AMINOETHOXY)ETHANOL

In this study experimental data are presented for the solubility of me thane in 3.0 and 6.0 kmol/m(3) (30.5 and 59.5 wt %) solutions of 2-(2- aminoethoxy)ethanol (which is also called diglycolamine). Temperatures in this study ranged from 25 to 125 degrees C and pressures to 13 MPa . The data were incorporated into a rigorous thermodynamic model that has been applied to other similar systems. The new data were then comp ared with the data available in the literature. In pure water and low amine concentrations it is demonstrated that the isobaric solubility e xhibits a minimum. However, for high amine concentration there is a so mewhat surprising result-the isobaric solubility is an increasing func tion of temperature over the range of temperature studied here.