Chemical Engineering Journal, Volume 229, 1 August 2013, Pages 250–256
Pyridinium-based temperature-responsive magnetic
ionic liquid for oxidative desulfurization of fuels
Wenshuai Zhu (a), Peiwen Wu (a), Lei Yang (a),
Yonghui Chang (b), Yanhong Chao (a), Huaming Li (a), Yunqing Jiang (a), Wei
Jiang (a), Suhang Xun (a)
a School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang
212013, PR China
b Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of
Education, College of Chemistry and Chemical Engineering, Hainan Normal
University, Haikou 571158, PR China
Abstract
Melting and solidification
of [BPy][FeCl4] are reversible. Researchers prepared a
temperature-responsive magnetic ionic liquid (IL) N-butylpyridinium
tetrachloroferrate ([BPy][FeCl4]) catalyst was prepared. Researchers
noted in the oxidative desulfurization process, the thermoregulated formation
of liquid–liquid extractive and
catalytic oxidation desulfurization system (ECODS) containing model oil,
hydrogen peroxide and [BPy][FeCl4] at 40 °C.
They also detected higher
sulfur removal. After finishing reaction and cooling temperature, the reaction
system returned to liquid–solid state. In addition,
[BPy][FeCl4] exhibits a strong response to a magnet. It can be
separated easily from model oil by applying an external magnetic field, achieving
five times recycling without significant decrease in activity. The effect of
oxidative desulfurization of model oil with dibenzothiophene (DBT),
benzothiophene (BT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT) was studied,
revealing fast oxidative desulfurization ability.
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