Citation: LI Xu-he, FANG Lei, YANG Hao, ZHANG Jian, LIANG Fei-xue, WANG Hai-yan, WANG Yan-juan. Preparation of g-C₃N₄ supported phosphotungstate hybrid materials and their catalytic performance in the oxidative desulfurization[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(2): 174-182. shu

Preparation of g-C₃N₄ supported phosphotungstate hybrid materials and their catalytic performance in the oxidative desulfurization

LI Xu-he ¹ ,
FANG Lei ² ,
YANG Hao ¹ ,
ZHANG Jian ^1,, ,
LIANG Fei-xue ^1,, ,
WANG Hai-yan ¹ ,
WANG Yan-juan ¹

1.
College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China
2.
Daqing Chemical Research Centre of Petrochemical Research Institute, PetroChina, Daqing 163714, China

Corresponding author: ZHANG Jian, zhangjian_lnpu@163.com LIANG Fei-xue,
Received Date: 29 September 2018
Revised Date: 10 December 2018

Fund Project: The project was supported by the Natural Science Foundation of Liaoning Province (20170540475) and Pilot Program of University of Liao-ning Innovation and Education Reformthe Natural Science Foundation of Liaoning Province 20170540475

Figures(10)

A series of supported [Bmim]₃PW₁₂O₄₀/g-C₃N₄ catalysts (BPWO/g-C₃N₄) was prepared by coprecipitation, with 1-butyl-3-methylimidazole bromide, phosphotungstic acid and g-C₃N₄ as the raw materials. The morphology and structure of the BPWO/g-C₃N₄ catalysts were characterized by XRD, FT-IR, UV-vis, N₂ physisorption, TEM and XPS; the effects of catalyst composition, oxygen to sulfur (O/S) ratio, catalyst amount and reaction temperature on the oxidative desulphurization efficiency were investigated by using n-heptane solution of dibenzothiophene (DBT) as a model oil and hydrogen peroxide as the oxidant. The results indicate that the BPWO/g-C₃N₄ catalysts have a Keggin-type heteropoly anionic structure and BPWO is well dispersed on g-C₃N₄. The BPWO(20%, mass ratio)/g-C₃N₄ catalyst exhibits the optimal oxidation performance towards DBT. Under 50℃ and with a O/S molar ratio of 6.0, DBT in the model oil with a concentration of 800 μg/g can be completely oxidized over the BPWO(20%, mass tatio)/g-C₃N₄ catalyst in 180 min. Moreover, the BPWO(20%, mass ratio)/g-C₃N₄ catalyst displays a good reusability and can be recycled for at least 8 cycles without any decrease in the DBT oxidation activity.
- phosphotungstic acid,
- H₂O₂,
- dibenzothiophene (DBT),
- oxidative desulfurization,
- g-C₃N₄
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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation of g-C3N4 supported phosphotungstate hybrid materials and their catalytic performance in the oxidative desulfurization

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通讯作者: 陈斌, bchen63@163.com

Preparation of g-C₃N₄ supported phosphotungstate hybrid materials and their catalytic performance in the oxidative desulfurization