Extraction Joined with Adsorption and Catalytic Oxidation of Dibenzothiophene with Commercially Available Tungsten Carbide
Extraction with ionic liquids joined with adsorption and catalytic oxidation composed with commercially available tungsten carbide, 30% H 2 O 2 and 1-n-octyl-3-methylimidazolium hexafluorophosphate ([omim]PF 6 ) could achieve the ultra-deep removal of dibenzothiophene (DBT) in model oil. In the case of the system increased the sulfur removal to 100% for 1h, which was remarkably superior to mere solvent extraction with IL (29.4%) or adsorption and catalytic oxidation without IL (2.0%). Especially, we found that the removal of 4,6-DMDBT could be up to 100%. The system could be recycled at least 12 times and the deep removal of DBT still could be achieved.