Journal
DALTON TRANSACTIONS
Volume 45, Issue 38, Pages 15242-15248Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6dt02065h
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Funding
- REQUIMTE-LAQV [FCT (Fundacao para a Ciencia e a Tecnologia)] [UID/QUI/50006/2013]
- CICECO - Aveiro Institute of Materials (FCT) [POCI-01-0145-FEDER-007679, UID/CTM/ 50011/2013]
- national funds through FCT/ MEC
- FEDER (Fundo Europeu de Desenvolvimento Regional)
- FCT
- European Union by MCTES [SFRH/BD/102783/2014, SFRH/BPD/108541/2015]
- European Social Fund through program POPH of QREN
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The oxidative desulfurization of model and real diesel has been studied using the complex [MoO2Cl2(4,4'-di-tert-butyl-2,2'-bipyridine)] as (pre)catalyst, aq. H2O2 as oxidant, and an ionic liquid as extraction solvent. Under moderate conditions (50 degrees C) and short reaction times (<3 h), dibenzothiophene, 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene could be completely removed from the model diesel. The (pre)catalyst 1 was transformed in situ to the active catalyst [MoO(O-2)(2)(di-tBu-bipy)]. By sequentially performing extractive desulfurization and ECODS steps, 76% sulfur removal was achieved for a real diesel (S-initial = 2300 ppm). For both the model and real diesels, the catalyst/IL phase could be easily recycled and reused with no loss of desulfurization efficiency.
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