Empirical modelling of physicochemical properties of carbon capture solvent-aqueous 2-amino-2-methyl-1-propanol (AMP)

Abstract This study delves into the physicochemical properties of aqueous AMP solutions, examining how varying concentrations and temperatures affect their behavior. Understanding these properties is crucial for optimizing AMP’s use in various industrial applications, from pharmaceuticals to food processing. Our findings reveal that density ( ρ ) decreases from 1.095 g/ml at 10 wt% and 283 K to 1.014 g/ml at 50 wt% and 333 K, showcasing significant thermal expansion effects. We also observed that the excess molar volume contracts, particularly at higher concentrations, indicating stronger solute–solvent interactions. Viscosity ( μ ) increases from 1.71 mPa s at 10 wt% and 283 K to 6.78 mPa s at 50 wt% and 283 K, while it decreases with temperature, highlighting how molecular motion enhances flow. Additionally, surface tension ( σ ) drops from 46.95 mN/m at 10 wt% and 283 K to 37.27 mN/m at 50 wt% and 333 K, reflecting the disruption of cohesive forces among water molecules. Our statistical analysis confirms the importance of concentration in shaping these properties, with high R 2 values ( ρ = 96.67 %, μ = 95.72 %, σ = 86.19 %) and parity charts demonstrating impressive model accuracy, exceeding 99 % for density and 95 % for viscosity.