Oxidative desulfurization of model diesel via dual activation by a protic ionic liquid.
J Hazard Mater
; 279: 220-5, 2014 Aug 30.
Article
em En
| MEDLINE
| ID: mdl-25064259
ABSTRACT
A novel and green carboxylate-anion-based protic ionic liquid (PIL), [Hnmp]HCOO, was prepared through a simple and atom economic neutralization reaction between N-methyl-2-pyrrolidonium (NMP) and formic acids. Both FT-IR spectra and (1)H NMR confirmed its simple salt structure. [Hnmp]HCOO exhibited so high catalytic activity that the dibenzothiophene (DBT) removal reached 99% at 50°C in 3h under conditions of VPIL/Vmodel oil=110 and H2O2/DBT (O/S, molar ratio)=5. The catalytic oxidation reactivity of S-compounds was found to be in the order of DBT>4,6-dimethyldibenzothiophene (4,6-DMDBT)>benzothiophene (BT). The investigation on mechanism showed that oxidative desulfurization was realized through dual activation of PIL. Moreover, [Hnmp]HCOO can be recycled for five times with an unnoticeable decrease in desulfurization activity.
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Base de dados:
MEDLINE
Assunto principal:
Enxofre
/
Gasolina
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article