Densities, Excess Molar Volumes, Isothermal Compressibilities, and Isobaric Thermal Expansivities of the N-Methyldiethanolamine (1) + Water (2) System at Temperatures between (313 and 363) K and Pressures up to 20 MPa

摘要: PρT properties in the compressed liquid phase were measured for system N-methyldiethanolamine (MDEA) (1) + water (2) at temperatures between (313 and 363) K pressures up to 20 MPa. Densities of MDEA four gravimetrically prepared mixtures (2), x1 = 0.0369, 0.0607, 0.0893, 0.1302, determined using a vibrating tube densimeter. The classical calibration method densimeter was used, nitrogen as reference fluids. uncertainty estimated be ± 0.2 kg·m-3 densities. densities each mixture correlated volume explicit equation six parameters. Isothermal compressibilities isobaric thermal expansivities calculated six-parameter with parameters obtained mixtures. uncertainties on these 0.005 GPa-1 5·10-7 K-1, respectively. Excess molar volumes dete...