CATEGORY: DESULFURIZATION
Fuel Processing Technology, Volume 114, October
2013, Pages 1–5
Beneficial effects of polycyclic aromatics on
oxidative desulfurization of light cycle oil over phosphotungstic acid (PTA)
catalyst
Gwang-Nam Yun, Yong-Kul Lee
Laboratory of Advanced Catalysis for Energy and Environment, Department of
Chemical Engineering, Dankook University, 126 Jukjeondong, Yongin 448-701,
Republic of Korea
Abstract
Researchers fabricated an
amphiphilic phosphotungstic acid catalyst (A-PTA) with quaternary ammonium salt
for the oxidative desulfurization (ODS) of light cycle oil (LCO). This produced high activity of the ODS
conversion of 95%, at H2O2/S ratio of 10 and 353 K.
The model reaction tests
for the ODS of refractory sulfur compounds in n-octane demonstrated that the
addition of indole drastically reduced overall ODS conversion. At the same time, while the introduction of
1-ethylnaphthalene fully recovered the ODS activity. This is due to the high solubility of the
oxidized S or N compounds in the 2-ring aromatics.
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