Preparation of Fe/Zr-SBA-15 catalyst and its oxidative desulfurization performance

WANG Hao; KONG Li-ming; ZENG Yong-ping

doi:10.19906/j.cnki.JFCT.2022088

Volume 51 Issue 6

Jun. 2023

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WANG Hao, KONG Li-ming, ZENG Yong-ping. Preparation of Fe/Zr-SBA-15 catalyst and its oxidative desulfurization performance[J]. Journal of Fuel Chemistry and Technology, 2023, 51(6): 832-840. doi: 10.19906/j.cnki.JFCT.2022088

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WANG Hao, KONG Li-ming, ZENG Yong-ping. Preparation of Fe/Zr-SBA-15 catalyst and its oxidative desulfurization performance[J]. Journal of Fuel Chemistry and Technology, 2023, 51(6): 832-840. doi: 10.19906/j.cnki.JFCT.2022088

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Preparation of Fe/Zr-SBA-15 catalyst and its oxidative desulfurization performance

doi: 10.19906/j.cnki.JFCT.2022088

College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China

Funds: The project was supported by National Natural Science Foundation of China (21676231).

Received Date: 2022-10-10
Accepted Date: 2022-11-18
Rev Recd Date: 2022-11-17

Available Online: 2022-12-13

Publish Date: 2023-06-15

Abstract

Abstract

To improve the oxidative desulfurization performance, the modified SBA-15 (Fe/Zr-SBA-15) with different Fe/Zr molar ratios were synthesized by direct hydrothermal method. The samples were characterized by XRD, N₂ adsorption and desorption, TEM and UV-vis. Zr was incorporated into the framework of SBA-15. Apart from little aggregated iron oxides, most of the Fe species were well dispersed in Fe/Zr-SBA-15. The influence of the reaction temperature, amount of oxidant and dosage of catalyst on the conversion of DBT were investigated using Fe/Zr-SBA-15-1.0 as catalyst, H₂O₂ as oxidant and acetonitrile as extractant. The removal rate of DBT reached 97.1% under the conditions of reaction temperature 50 ℃, O/S molar ratio of 4 and catalyst dosage of 6 g/L. The synergistic effect of Fe and Zr played important role, with Fe^{3 +} acting as the oxidation activity center and Zr^{4 +}as the center of adsorption. In addition, the removal rate of DBT could still reach 91.3% after 4 cycles and Fe/Zr-SBA-15 showed good stability.
- Fe/Zr-SBA-15,
- dibenzothiophene,
- oxidation desulfurization

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References(38)

References

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