Preparation of ionic liquid-type UiO-66 and its adsorption desulfurization performance

Two ionic liquid-type UiO-66 ([email protected](IL)) were synthesized by the hydrothermal method, which was used as an adsorbent to study the adsorption desulfurization performance of DBT in model oil. The [email protected](IL) was characterized by FT-IR, SEM, XRD, BET, and EDS. [email protected](IL1) had the best adsorption performance for DBT through screening. The optimal conditions for the adsorption process: adsorbent amount 1 g, adsorption time 10 min, and 100 mL of model oil (2000 mg/L). The maximum adsorption capacity of [email protected](IL1) for DBT was 43.52 mg/g under the optimal situation. In addition, the adsorption isotherms and kinetics of the adsorption process were investigated, and the relevant parameters were calculated. The adsorption process of [email protected](IL1) to DBT followed the Freundlich adsorption isotherm model and pseudo-second-order kinetics. After being washed and regenerated by methanol 5 times, the adsorption capacity of [email protected](IL1) was not significantly reduced. The removal effect of [email protected](IL1) on different sulfides was also studied. [email protected](IL1) also had a good adsorption effect on different sulfur compounds, and the removal order was dibenzothiophene > benzothiophene > thiophene.