Synthesis of a New Nanoadsorbent for Removal of Dibenzothiophene from Oils: Au Particles on Ordered Mesoporous Carbon

Au-doped mesoporous carbon, Au-CMK-3, was prepared for desulfurization of refinery fuels. The synthesis of ordered mesoporous carbon, OMC, was performed using SBA-15 silica as the hard template and sucrose as the carbon source. The structural order and textural properties of the prepared materials were studied by X-ray fiffraction (XRD), Scanning Electron Microscopy (SEM), and N2 adsorption-desorption. Au-doped mesoporous carbon has been studied as a nanoabsorbent for removal of dibenzothiphene (DBTP) from n-heptane solutions as fuel model at room temperature. Batch adsorption studies were carried out to study the effect of contact time and initial concentration. Freundlich and Langmuir adsorption isotherms were used to model the equilibrium adsorption data. The uptake capacity of dibenzothiphene followed the order: Au- CMK-3> CMK-3.

کلیدواژه ها:

Nanoadsorbent ، Dibenzothiophene ، Au-CMK-3