Publication Date:
2013-11-22
Description:
Magnetic ionic liquids (MIL) are extensively used in extraction and catalytic processes. Here, a series of MIL, i.e., 1- n -butyric acid-3-methylimidazolium chloride/ x FeCl 3 ([C 3 H 6 COOHmim]Cl/ x FeCl 3 ; x = 0.5, 1, 1.5, 2), were synthesized and characterized by infrared spectroscopy, visible absorption spectrometry, and electrospray ionization mass spectrometry. The MIL [C 3 H 6 COOHmim]Cl/2FeCl 3 was found to be highly active for the extraction and catalytic oxidative desulfurization of a model oil under mild conditions. Of note, the removal of benzothiophene, which has been regarded as a refractory aromatic sulfur compound, could be achieved at up to 100 % in 10 min. After reaction, the MIL could be easily separated from the model oil by applying an external magnetic field, due to its paramagnetic properties. Different magnetic ionic liquids (MIL) were synthesized and characterized. The MIL [C 3 H 6 COOHmim]Cl/2FeCl 3 with H 2 O 2 as oxidant was able to remove benzothiophene and dibenzothiophene completely from a model oil under mild conditions. The magnetic ionic liquid and the model oil could then be easily separated through magnet-assisted decantation.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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