Figure 43.

(A) Toluene/n-heptane selectivity (S) and toluene distribution ratio (β) (in mass units) between extract and raffinate phases for studied ILs in single equilibrium liquid–liquid extraction with S/F = 1 mass basis and (B) aromatic recoveries and purities in extract phase from liquid–liquid extraction in countercurrent extraction column (N = 5, S/F = 5) for binary mixture of (n-heptane + toluene) with mass fraction of 0.34 of n-heptane at 40 °C. Reproduced from ref (38). Copyright 2023 Elsevier.