01378nab a2200181 4500 20260520000831.0 260224s2009 xxu Deep oxidative desulfurization of fuels catalyzed by phosphotungstic acid in ionic liquids at room temperature mar./abr. 2009 2009-08-12 ; 2009-08-12 4 p. ; 1354-1357 Resúmen del autor: A simplified extraction and catalytic oxidative desulfurization (ECODS) system composed of phosphotungstic acid (H3PW12O40·14H2O), 30% H2O2, and [bmim]BF4 was found suitable for the deep removal of sulfur in model oil. By this desulfurization system dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT), and benzothiophene (BT) could be effectively removed. Removal of DBT could reach 98.2% at room temperature (30 °C) for 1 h, which was remarkably superior to mere solvent extraction with IL (14.2%) or catalytic oxidation without IL (15.9%). When the reaction temperature increased to 70 °C, treatment of BT, DBT, and 4,6-DMDBT with our ECODS system showed 100% removal of sulfur compounds in 3 h. This desulfurization system could be recycled five times with slight decrease in activity Energy & fuels 23 ARTICULO Li, Huaming 41782 He, Lining 41783 170293 170293 0 0 0 0 238112 BAAB BAAB 2026-03-05 200045120 0 200045120 2026-03-05 15:12:32 2026-03-05 ARTICULO