Molar Heat Capacity of Various Aqueous Alkanolamine Solutions from 303.15 K to 353.15 K

Abstract

The molar heat capacities of aqueous 2-((2-aminoethyl)amino)ethanol (AEEA), 3-amino-1-propanol (AP), 2-(methylamino)ethanol (MAE), 1-amino-2-propanol (MIPA), and N,N-dimethylethanolamine (DMEA) solutions are reported at 11 different temperatures in the range (303.15 to 353.15) K. The percentage average absolute deviation (% AAD) of the measured molar heat capacities of MEA and MDEA is found to be 0.23 % when compared with the literature values. Molar excess heat capacities are calculated from the measurement results and correlated as a function of the mole fractions using the Redlich−Kister equation. The excess partial molar heat capacities ( − ) are also reported.