Liquid Density of Aqueous Blended Alkanolamines and N-Methylpyrrolidone as a Function of Concentration and Temperature

Abstract

Experimental values of the liquid density have been determined for ternary systems formed by aqueous mixtures of diethanolamine (DEA) + methyldiethanolamine (MDEA), DEA + 2-amino-2-methy-l-propanol (AMP), DEA + 2-piperidineethanol (2PE), DEA + N-methylpyrrolidone (NMP), MDEA + AMP, MDEA + 2PE, MDEA + NMP, and NMP + AMP. The data were obtained at (313.15, 323.15, and 333.15) K, the total concentration of the blended solvents studied was in the range 30-60 mass %, and for each concentration at least seven points were obtained with different proportions of each solvent. The estimated accuracy of the data is (0.0004 g‚cm -3 . From the density data, molar excess volumes were derived, which were correlated using the Redlich-Kister equation; the final expression includes the functionality of both concentration and temperature.

Volumetric and viscometric behaviour of the binary systems of N-methyldiethanolamine and diethanolamine with 1-butyl-3-methylimidazolium acetate at various temperatures

“…To verify the reliability of the equipment and procedures, the density and viscosity of pure alkanolamines were measured at different temperature and compared with the experimental values of MDEA [30,31,[48][49][50][51][52][53][54][55][56][57] and DEA [49,53,[57][58][59][60][61][62] that are given by the other authors.…”

“…2-3. Also Table 4 presents the comparison of the measured values of density and viscosity for DEA with the literature [49,53,[57][58][59][60][61][62]. The slight difference in the measured density and viscosity values for MDEA and DEA could be due to the presence of impurities, variation in water content, different source of supply of chemicals and usage of different apparatus for measurement [30].…”

A Study on the density and excess molar volume of the mixture formed by 2-amino-2-methyl-1-propanol, diethanolamine, and water

“…MEA aqueous solution is extensively used in the electric power industry for directly scrubbing CO 2 from the exhaust gas produced by fossil fuel combustion [2]. The physical and chemical properties of different alkanolamines, such as diethanolamine (DEA), methyl-diethanolamine (MDEA), butyl-diethanolamine (BDA), Triethanolamine (TEA), and propyl-ethanolamine (PEA), among others, have been studied by various research groups [3][4][5][6]. Several studies have been published on the density of alkanolamines, due to this property plays an important role in the design, operation, and control of sweetening processes.…”

“…Also those authors analyzed the intermolecular interactions of the ternary solution. Their predictions on the excess molar volume had a σ in the range of 0.02 to 0.05 cm 3 •mol −1 .…”

DEGRADATION OF AQUEOUS SOLUTIONS OF ALKANOLAMINE BLENDS AT HIGH TEMPERATURE, UNDER THE PRESENCE OF CO2AND H2S

“…This work is part of a global research project focused on the study of several physical chemical properties of alkanolamine aqueous solutions Trejo, 2004a, 2004b;Murrieta-Guevara et al, 1998;Á guila-Hern a andez et al, 2001) with the aim to develop more efficient solvents for the removal of acidic gases from hydrocarbon gas streams produced in the gas industry.…”