The solubility of methane in 3 kmol/m3 solutions of monoethanolamine, diethanolamine, and triethanolamine was measured from 25" to 125ยฐC and pressures up to about 13 MPa. Measurements were also made for the solubility of methane in water at 25" to 125ยฐC and pressures up to 18 MPa in order to confirm the accuracy of the experimental technique. It is demonstrated that methane is more soluble (in terms of mole fraction) in the amine solution than in pure water. Furthermore, the solubility is an increasing function of the size of the alkanolamine. The solubility data were modeled using a Henry's-law approach and the results summarized in terms of salting-in coefficients.
On a mesure la solubilite du methane dans des solutions de 3 kmol/m3 de monoethanolamine, diethanolamine et triethanolamine a des temperatures entre 25 et 125ยฐC et des pressions jusqu'a 13 MPa. Des mesures ont egalement ete prises pour la solubilite du methane dans I'eau a des temperatures entre 25 et 125ยฐC et des pressions jusqu'a 18 MPa afin de confirmer la precision de la technique experimentale. On demontre que le methane est plus soluble (en termes de fraction molaire) dans la solution aminee que dans I'eau pure. En outre,