Format

Send to

Choose Destination
J Hazard Mater. 2014 Aug 30;279:220-5. doi: 10.1016/j.jhazmat.2014.07.005. Epub 2014 Jul 15.

Oxidative desulfurization of model diesel via dual activation by a protic ionic liquid.

Author information

1
Green Chemistry Centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China. Electronic address: hylv@ytu.edu.cn.
2
Green Chemistry Centre, College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, China.

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=1:10 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.

KEYWORDS:

DBT; Diesel; Oxidative desulfurization; Protic ionic liquid

PMID:
25064259
DOI:
10.1016/j.jhazmat.2014.07.005
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center