Dichlorodioxomolybdenum(VI) complexes bearing oxygen-donor ligands as catalysts for oxidative desulfurization of simulated and real diesel

authors	Juliao, D; Gomes, AC; Cunha-Silva, L; Pillinger, M; Lopes, AD; Valenca, R; Ribeiro, JC; Goncalves, IS; Balula, SS
nationality	International
journal	CATALYSIS COMMUNICATIONS
author keywords	Oxidative desulfurization; Dioxomolybdenum catalysts; Hydrogen peroxide; Ionic liquids; Optimization; Real diesel
keywords	VALENT OXO-MOLYBDENUM; EFFICIENT CATALYSTS
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.
publisher	ELSEVIER SCIENCE BV
issn	1566-7367
isbn	1873-3905
year published	2019
volume	128
digital object identifier (doi)	10.1016/j.catcom.2019.05.011
web of science category	Chemistry, Physical
subject category	Chemistry
unique article identifier	WOS:000474675100017