Juliao, DianaGomes, Ana C.Cunha-Silva, LuisPillinger, MartynLopes, Andre D.Valenca, RitaRibeiro, Jorge C.Goncalves, Isabel S.Balula, Salete S.2020-07-242020-07-242019-081566-73671873-3905http://hdl.handle.net/10400.1/14285The complexes [MoO2Cl2(DMB)(2)] (1) and [MoO2Cl2(DEO)] (2) (DMB = N,N-dimethylbenzamide, DEO = N,N'-diethyloxamide) have been evaluated as catalysts in extractive-catalytic oxidative desulfurization (ECOD) of a simulated diesel fuel. Using the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]PF6) as extraction solvent and H2O2 as oxidant, ultra-deep desulfurization (S-content from 3000 ppm to < 10 ppm) was possible within a reaction time of 1-3 h, and the systems Catalyst/[BMIM]PF6 could be recycled for five times without significant decrease in activity. The S-content of a real untreated diesel was lowered by 94.4% from 2300 ppm to 129 ppm after only 2 h of reaction using the ECOD process with 2 as catalyst.engValent oxo-molybdenumEfficient catalystsjournal article10.1016/j.catcom.2019.05.011