The interest in ionic liquids (ILs) as replacements for more hazardous solvents has been growing over the last years, especially industrial synthesis and liquid-liquid separations. Consequently, it is important to study their degree of dissociation (α), which quantifies ratio IL molecules dissociated into ions significantly influences viscosity, density, surface tension. In this work, ILs binar...

The UNIQUAC activity coefficient model is extended to predict solid-liquid equilibrium of isotactic crystalline poly (1-butene), iPBu-1, in different organic solvents. The UNIQUAC activity coefficient model used in this work is based on the concept of group contribution and consists of combinatorial, residual and free volume terms. To account for branching of atom groups in the monomer structur...

in this study a simple and general chemical association theory is introduced. the concept of infinite equilibrium model is re-examined and true mole fractions of associated species are calculated. the theory is applied to derive the distribution function of associated species. as a severe test the application of presented theory to the van der waals mixture model is introduced in order to perfo...

The liquid-liquid equilibrium (LLE) phase boundaries were determined experimentally for the ternary systems containing refined sunflower oil, methanol, and one of ten potential cosolvents at 308.2 K under atmospheric pressure by using cloud point method. n-Butylamine was found to be one of the best cosolvents, which could substantially enhance the miscibility between the oil and methanol. The L...

Liquid–liquid equilibrium (LLE) data are critical for the design and optimization of processes extracting aromatics. Partial LLE non-aromatic–aromatic–sulfolane ternary system were acquired at 313.15 K 101.3 kPa. The extraction aromatics using sulfolane predicted COSMO-RS model. Correspondingly, experimental analyzed root mean square deviation (RMSD), distribution coefficient (D), separation fa...