Dichlorodioxomolybdenum(VI) complexes bearing oxygen-donor ligands as catalysts for oxidative desulfurization of simulated and real diesel
2019; Elsevier BV; Volume: 128; Linguagem: Inglês
10.1016/j.catcom.2019.05.011
ISSN1873-3905
AutoresDiana Julião, Ana C. Gomes, Luís Cunha‐Silva, Martyn Pillinger, André D. Lopes, Rita Valença, Jorge C. Ribeiro, Isabel S. Gonçalves, Salete S. Balula,
Tópico(s)Catalytic Processes in Materials Science
ResumoThe 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.
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