Preparation of WO3/g-C3N4 heterojunction catalyst and its oxidative desulfurization performance

LIU Shuai; LIU Jin-bo; LI Xu-he; ZHANG Jian; YAN Jing-sen; LIANG Fei-xue; WANG Yan-juan

Volume 47 Issue 7

Jul. 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(7): 852-862

LIU Shuai, LIU Jin-bo, LI Xu-he, ZHANG Jian, YAN Jing-sen, LIANG Fei-xue, WANG Yan-juan. Preparation of WO3/g-C3N4 heterojunction catalyst and its oxidative desulfurization performance[J]. Journal of Fuel Chemistry and Technology, 2019, 47(7): 852-862.

Citation:

LIU Shuai, LIU Jin-bo, LI Xu-he, ZHANG Jian, YAN Jing-sen, LIANG Fei-xue, WANG Yan-juan. Preparation of WO₃/g-C₃N₄ heterojunction catalyst and its oxidative desulfurization performance[J]. Journal of Fuel Chemistry and Technology, 2019, 47(7): 852-862.

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Preparation of WO₃/g-C₃N₄ heterojunction catalyst and its oxidative desulfurization performance

1.
Liaoning Shihua University, Fushun 113001, China
2.
Liaoning Institute of Science and Technology, Benxi 117004, China

Funds:

the Natural Science Foundation of Liaoning Province 20170540475

More Information

Corresponding author: ZHANG Jian, E-mail: zhangjian_lnpu@163.com
Received Date: 2019-03-26
Rev Recd Date: 2019-04-23

Available Online: 2021-01-23

Publish Date: 2019-07-10

Abstract

Abstract

Graphite phase carbon nitride (g-C₃N₄) and metal oxide tungsten trioxide (WO₃) heterojunction nanocomposites WO₃/g-C₃N₄ were prepared by roasting from urea and ammonium tungstate. The physical and chemical properties of the catalysts were investigated by means of XRD, UV-vis, SEM, PL and XPS. The characterization indicated that WO₃ and g-C₃N₄ interacted well in the catalysts, and electron transfer occurred between them, which ensured high oxidative desulfurization activity of WO₃/g-C₃N₄. Supported catalyst WO₃/g-C₃N₄ was prepared using WO₃ as the support. Isopropyl peroxide was used as the oxidant to investigate the catalyst performance in oxidative desulfurization of the simulated oil. Under the reaction conditions of 80℃ and the content ratio of O/S at 3, a 72.79% of dibenzothiophene (DBT) conversion could be achieved after 180 min. It was fund that the superoxide free radicals (·O₂^-), electron (e^-) and hydroxyl free radicals (·OH) promoted the reaction rate through free radical capture experiment and the reaction mechanism was proposed.
- WO₃,
- g-C₃N₄,
- heterojunction,
- oxidative desulfurization,
- electron transfer

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References(33)

References

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