“…In addition to the experimental results, literature data obtained with other ionic liquids [5,9,10,14,15,19] and sulfolane [20][21][22][23] The behaviour of the solute distribution ratio is the opposite: the b values obtained with [EMim] [ESO 4 ] are lower than those obtained in literature for other solvents, although in all cases, b values are less than unity. For this reason, when a separation scheme is designed, it is important to find a compromise between S and b to obtain a big amount of high purity aromatic using the minimum possible amount of ionic liquid.…”