Ethylsulphate based ionic liquids for denitification of liquid fuels

Ternary liquid-liquid equilibrium (LLE) for eight systems containing 1-ethyl-3-methylimidazolium ethylsulphate {[EMIM][EtSO4]}, 1-ethyl-3-methylpyridinium ethylsulphate {[EMPy][EtSO4]} (1) + pyridine/pyrrole/indoline/quinoline (2) + dodecene (3) have been determined at 298.15 K. The reliability of experimental LLE data was tested by Othmer-Tobias and Hand equations. The NRTL and UNIQUAC models were successfully used for experimental LLE data correlation and gave the RMSD less than unity, which indicated a good degree of experimental LLE data fit. Distribution coefficient and the selectivity of [EMIM][EtSO4] and [EMPy][EtSO4] were calculated for all the studied systems. Here, high distribution coefficient and selectivity were obtained for the removal of pyridine/pyrrole/indoline/quinoline from dodecene using EMIM][EtSO4] and [EMPy][EtSO4] ionic liquids at 298.15 K.

Automated summary

The ternary liquid-liquid equilibrium (LLE) for eight systems containing [EMIM][EtSO4] and [EMPy][EtSO4] at 298.15 K was investigated, with the experimental data showing a good fit. The NRTL and UNIQUAC models were successfully used to correlate the experimental LLE data, with high distribution coefficients and selectivity obtained for the studied systems.