Surface
Tension Prediction of Ionic Liquid Binary
Solutions
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Abstract
An
ionic liquid is a salt in which the ions are poorly coordinated,
which results in these solvents being liquid below 100 °C, or
even at room temperature. At least one ion has a delocalized charge,
and one component is organic, which prevents the formation of a stable
crystal lattice. In the present work three classical thermodynamic
models has been selected to predict the surface tensions of ionic
liquid binary mixtures based on the CSGC model (corresponding-states
group-contribution method), HSEG model (extended Guggenheim’s
ideal solution model), and parachor model. To predict the surface
tension of ionic liquid binary solution, we calculated critical parameters,
density, and surface tension of pure component. To compare, theoretical
and experimental data average standard deviation values have been
calculated. These values for the studied ionic liquid binary systems
show the HSEG model has good accordance in comparison with other predictive
equations