Thermophysical properties of N-isopropyl-2-propanamine+alkanol (C1-C3) mixtures as absorbents for carbon dioxide capture

초록

As N-isopropyl-2-propanamine+alkanol (C1-C3) systems are potential absorbents for CO2 capture, we measured density (p), viscosity (?) and the ultrasonic speed data (u) for N-isopropyl-2-propanamine (DIPA) with alkanol (C-1-C-3) at T=(298.15 and 308.15) K and 0.1 MPa. The experimental density (p), viscosity (?) and ultrasonic speed (u) data were used to derive excess molar volume (V-m(E)), apparent, partial, and excess partial molar volume, deviation in viscosity and deviation in ultrasonic speed, excess isentropic compressibility (K-s(E)). We predicted the V-m(E) values using the Prigogine-Flory-Patterson theory (PFP) and by Nakata and Sakurai model. An Ab initio approach was proposed for the excess isentropic compressibility (K-s(E)) and ?? data which not only reproduces the experimental data but also gives important parameters that describe the extent of depolymerization on mixing and strength of intermolecular interactions.

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