Determination of Viscosity, Density and Interfacial Tension of the Carbon Dioxide-Isopropanol, Argon-Isopropanol, Sulphur Hexafluoride-Isopropanol Binary Systems at 313.15 K and 333.15 K and at Elevated Pressures

Viscosity, density, and interfacial tension of three binary systems (carbon dioxide-isopropanol, argon-isopropanol, and sulphur hexafluoride-isopropanol) were measured at temperatures of 313.15 K and 333.15 K and at pressures up to 100 bar for carbon dioxide, and for argon and sulphur hexafluoride up to 500 bar. A vibrating tube densimeter method has been used for density measurements and a variable-volume high-pressure optical view cell with some modifications for the other measurements. The results showed that pressure does not have a high impact on viscosity. Density is found to be a linear function of pressure and temperature and the densities of the investigated binary systems increase with pressure and decrease with temperature. Interfacial tension decreased with the elevated pressure at a constant temperature for all the investigated systems. Accurate prediction of thermodynamic and mass transfer data is fundamental in various engineering and industrial operations to design processes with a higher yield of targeted compounds.

Automated summary

The study on three binary systems revealed that pressure has little impact on viscosity, while density and interfacial tension show linear relationships with pressure and temperature, with density increasing with pressure and decreasing with temperature.