Citation: LI Hao, YAN Feng, YANG Shao-bin. Modified solid superacid S₂O₈^2-/ZrO₂-CoO for oxidative desulfurization of FCC gasoline[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(4): 484-492. shu

Modified solid superacid S₂O₈^2-/ZrO₂-CoO for oxidative desulfurization of FCC gasoline

LI Hao ¹ ,
YAN Feng ^1,, ,
YANG Shao-bin ²

1.
College of Petrochemical Technology, Liaoning University of Petroleum & Chemical Technology, Fushun 113001, China
2.
China National Petroleum Corporation Fushun Petrochemical Company Catalyst Factory, Fushun 113001, China

Corresponding author: YAN Feng, yfstar65@126.com
Received Date: 5 December 2018
Revised Date: 23 January 2019

Fund Project: The project was supported by the National Science and Technology Major Project Tasks (2016ZX05010-004-005)the National Science and Technology Major Project Tasks 2016ZX05010-004-005

Figures(8)

A series of solid super acid catalysts, S₂O₈^2-/ZrO₂, S₂O₈^2-/ZrO₂-CuO and S₂O₈^2-/ZrO₂-CoO, were synthesized by coprecipitation impregnation method with zirconium nitrate, copper nitrate and cobalt nitrate as the metal sources and with ammonium persulfate as the impregnation solution. The catalysts were characterized by XRD, FT-IR and NH₃-TPD. The characterization shows that the S₂O₈^2-/ZrO₂-CoO catalyst has the most super acid sites among the three catalysts. S₂O₈^2-/ZrO₂-CoO as the catalyst and hydrogen peroxide as the oxidant were used for oxidative desulfurization of FCC gasoline, and the effects of reaction temperature, catalyst dosage, reaction time and oxidant dosage on the desulfurization of FCC gasoline were studied. The optimal conditions were determined as:FCC gasoline of 15 mL, reaction temperature of 70℃, reaction time of 1.5 h, oxidant dosage of V(H₂O₂):V(oil)=7.5:1, and catalyst dosage of 0.02 g/mL. Moreover, the reaction product was extracted with N, N-dimethylformamide. When the volume ratio of extractant to gasoline is 1:1, the sulfur removal efficiency and recovery of FCC gasoline reach to 85.34% and 94.45%, respectively. The catalyst exhibits a relatively stable catalytic activity.
- solid super acid,
- oxidative desulfurization,
- impregnation method,
- FCC gasoline
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Modified solid superacid S₂O₈^2-/ZrO₂-CoO for oxidative desulfurization of FCC gasoline