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Title: Dichlorodioxomolybdenum(VI) complexes bearing oxygen-donor ligands as catalysts for oxidative desulfurization of simulated and real diesel
Author: Julião, Diana
Gomes, Ana C.
Cunha-Silva, Luís
Pillinger, Martyn
Lopes, André D.
Valença, Rita
Ribeiro, Jorge C.
Gonçalves, Isabel S.
Balula, Salete S.
Keywords: Oxidative desulfurization
Dioxomolybdenum catalysts
Hydrogen peroxide
Ionic liquids
Real diesel
Issue Date: Aug-2019
Publisher: Elsevier
Abstract: The 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.
Peer review: yes
DOI: 10.1016/j.catcom.2019.05.011
ISSN: 1566-7367
Appears in Collections:CICECO - Artigos
DQ - Artigos

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