Density, Dynamic Viscosity, Surface Tension, Vapor Pressure, Heat Capacity, and Thermal Conductivity of Aqueous 2-(Isopropylamino)ethanol Solutions at Temperatures from (298.15 to 353.15) K

Abstract

2-(Isopropylamino)ethanol (IPAE) is attracting attention as an efficient amine-based CO2 absorbent with steric hindrance. However, data on the physicochemical characteristics of IPAE are lacking. Therefore, in this study, the physical properties of aqueous IPAE solutions, such as density, dynamic viscosity, surface tension, vapor pressure, heat capacity, and thermal conductivity, were measured from T = (298.15 to 353.15) K for IPAE mass fractions of 0.1–0.5. For each physical property, correlation coefficients based on the temperature and mass fraction were derived through regression analysis, and the absolute average deviation between the measured and calculated data was found to be 0.146% for density, 0.706% for dynamic viscosity, 0.689% for surface tension, 0.164% for vapor pressure, 0.343% for heat capacity, and 0.269% for conductivity. The reported data are anticipated to be highly valuable as process design data for researchers who use IPAE as an absorbent.

Evaluation of Physicochemical Characteristics of Aqueous Bis(3-Aminopropyl)Amine and its Mixture with 2-Amino-2-Methyl-1-Propanol across Varied Temperatures and Concentrations toward Exploring New Solvents for CO2 Capture

“…To develop a promising CO 2 capture liquid absorbent, it is important to determine their density, viscosity, and surface tension along with the other physicochemical features. , Density and viscosity are two significant parameters as they are used to calculate mass transfer coefficients, illustrating their relevance in the construction of packed absorber and stripper columns . Moreover, the surface tension of the solvent has an impact on both mass and heat transfer .…”