EPC-SAFT Modelling of Density for Aqueous Ionic Liduids [RMIM] SCN Solutions

Ionic liquid electrolyte solutions applications arised at last decades and seems will developin future for their green aspect of view. Thermodynamic properties prediction of theseelectrolytes will be very important in near future for industries because these novel combinationsinvestigations are so limited. Equation of state is one of strong tools of thermodynamic thatdeveloped. Statistical thermodynamic introduced many molecular based equation of states.Electrolyte perturbation chain- statistical associated fluid theory (ePC-SAFT) is one of molecularbased equation of states that effectively utilized for ionic liquids [1-3]. [RMIM]SCN with differentalkyl chain length (R = C4, C6, C8) aqueous solutions were studied at this work. Densitymeasurement in dilute region of electrolyte solutions of ionic liquids were done at atmosphericpressure and T = 298.15K. ePC-SAFT density modeling were done by pure componentparameters in respect of [RMIM]SCN and water [4]. Different alkyl chain length effect of[RMIM] SCN on ePC-SAFT ability in density prediction were investigated at this work.

Keywords:

Ionic Lliquid , Electrolyte , Imidazolium , Thiocyanate , Density , ePC-SAFT