Physicochemical properties of {1-methyl piperazine (1) + water (2)} system at T = (298.15 to 343.15) K and atmospheric pressure |
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Authors: | Aravind V Rayer Kazi Z Sumon Amr Henni Paitoon Tontiwachwuthikul |
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Institution: | International Testing Center for CO2 Capture (ITC), Faculty of Engineering and Applied Science, University of Regina, Saskatchewan, Canada S4S 0A2 |
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Abstract: | Densities (ρ) and viscosities (η) of aqueous 1-methylpiperazine (1-MPZ) solutions are reported at T = (298.15 to 343.15) K. Refractive indices (nD) are reported at T = (293.15 to 333.15) K, and surface tensions (γ) are reported at T = (298.15 to 333.15) K. Derived excess properties, except excess viscosities (Δη), are found to be negative over the entire composition range. The addition of 1-MPZ reduces drastically the surface tension of water. The temperature dependence of surface tensions is explained in terms of surface entropy (SS) and enthalpy (HS). The measured and derived properties are used to probe the microscopic liquid structure of the bulk and surface of the aqueous amine solutions. |
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Keywords: | 1-MPZ Density Viscosity Refractive index Surface tension Surface enthalpy Surface entropy |
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