Citation: LI Jian, WANG Xue-ying, HUANG Xin, HONG Shuai-ling, YANG Li-na. Preparation of the CuWO₄/SBA-15 catalyst and its performance in the photocatalytic oxidation desulfurization[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(5): 632-640. shu

Preparation of the CuWO₄/SBA-15 catalyst and its performance in the photocatalytic oxidation desulfurization

1.
College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China
2.
Sinopec Yanshan Petrochemical Company, Beijing 102500, China

Corresponding author: YANG Li-na, 767527173@qq.com
Received Date: 1 February 2020
Revised Date: 14 April 2020

Fund Project: General Scientific Research Project of Liaoning Provincial Department of Education L2016018Program for Science and Technology Agency of Liaoning Province 20170540585The project was supported by Program for Liaoning Excellent Talents in University (LJQ2015062), Program for Science and Technology Agency of Liaoning Province (20170540585) and General Scientific Research Project of Liaoning Provincial Department of Education (L2015296, L2016018)Program for Liaoning Excellent Talents in University LJQ2015062General Scientific Research Project of Liaoning Provincial Department of Education L2015296

Figures(15)

The CuWO₄/SBA-15 catalyst was prepared with CuWO₄ as the active composite and mesoporous SBA-15 molecular sieve as the support and characterized by XRD, N₂ adsorption and desorption, FT-IR, UV-vis, SEM, EDS and TEM; the performance of CuWO₄/SBA-15 catalyst in the photocatalytic oxidation desulfurization (PODS) was investigated by using the dodecane solution of dibenzothiophene (DBT) as the model fuel. The results show that the CuWO₄/SBA-15 catalyst can maintain the two-dimensional hexagonal mesoporous structure of the support and the active component is evenly distributed on the support; the surface area, pore size and pore volume of the CuWO₄/SBA-15 catalyst decrease with an increase in the amount of active component. Compared with CuWO₄, the CuWO₄/SBA-15 catalyst displays a blue shift in absorption boundary of UV-vis spectra and an increase of the band gap. With a CuWO₄/SiO₂ mass ratio of 0.07, catalyst mass percentage of 3% in the model fuel, O/S molar ratio of 10:1, and extractant/oil volume ratio of 1:1, the desulfurization rate reaches 81.5% by carrying out the PODS reaction under light for 100 min, which is obviously higher than that over CuWO₄; moreover, no obvious decrease of catalytic activity for CuWO₄/SBA-15 was observed after 6 runs of PODS. It is proposed that ·OH and h⁺ are the main reactive intermediates in PODS.
- desulfurization,
- SBA-15,
- CuWO₄,
- photocatalytic,
- oxidation
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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation of the CuWO4/SBA-15 catalyst and its performance in the photocatalytic oxidation desulfurization

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Preparation of the CuWO₄/SBA-15 catalyst and its performance in the photocatalytic oxidation desulfurization