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Title: A recyclable ionic liquid-oxomolybdenum(VI) catalytic system for the oxidative desulfurization of model and real diesel fuel
Author: Julião, Diana
Gomes, Ana C.
Pillinger, Martyn
Valença, Rita
Ribeiro, Jorge C.
Gonçalves, Isabel S.
Balula, Salete S.
Issue Date: Aug-2016
Publisher: Royal Society of Chemistry
Abstract: 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 °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(O2)2(di-tBu-bipy)]. By sequentially performing extractive desulfurization and ECODS steps, 76% sulfur removal was achieved for a real diesel (Sinitial = 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.
Peer review: yes
DOI: 10.1039/c6dt02065h
ISSN: 1477-9226
Appears in Collections:CICECO - Artigos

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