Prediction and correlation of viscosity of binary mixtures of ionic liquids with organic solvents

Abstract

Viscosities of ten binary liquid mixtures consisting of ionic liquids and organic compounds, determined at atmospheric pressure and in a wide temperature range, were calculated using two different approaches, predictive by group contribution models (UNIFAC-VISCO and ASOG-VISCO) and correlative (Seddon, Grunberg-Nissan, McAlister, Eyring-UNIQUAC and Eyring-NRTL models), and compared using literature data. The obtained results were analysed in terms of the applied approach and model. For UNIFAC-VISCO and ASOG-VISCO predictive models, the literature viscosity data were used to determine new interaction parameters.