Efficient and reusable ordered mesoporous WOx/SnO2 catalyst for oxidative desulfurization of dibenzothiopheneopen access
- Authors
- Piao, WX[Piao, Wenxiang]; Li, ZH[Li, Zhenghua]; Li, CB[Li, Chengbin]; Park, JS[Park, Jin Seo]; JUNGHO, L.[JUNGHO, LEE]; YANG, L. Z.[YANG, LI ZHENG]; YEONG, K. K.[YEONG, KIM KI]; Jin, LY[Jin, Long Yi]; Kim, JM[Kim, Ji Man]; Jin, MS[Jin, Mingshi]
- Issue Date
- Aug-2021
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.11, no.44, pp.27453 - 27460
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC ADVANCES
- Volume
- 11
- Number
- 44
- Start Page
- 27453
- End Page
- 27460
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/91552
- DOI
- 10.1039/d1ra04957g
- ISSN
- 2046-2069
- Abstract
- The oxidative desulfurization (ODS) of organic sulfur compounds over tungsten oxide supported on highly ordered mesoporous SnO2 (WOx/meso-SnO2) was investigated. A series of WOx/meso-SnO2 with WOx contents from 10 wt% to 30 wt%, were prepared by conventional wet impregnation. The physico-chemical properties of the WOx/meso-SnO2 catalysts were characterized by X-ray diffraction (XRD), N-2 adsorption-desorption isotherms, electron microscopy, Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, and the temperature-programmed reduction of hydrogen (H-2-TPR). The characterization results indicated that these catalysts possessed mesoporous structures with uniform pores, high specific surface areas, and well-dispersed polyoxotungstate species on the surface of meso-SnO2 support. The ODS performances were evaluated in a biphasic system (model oil/acetonitrile, S-initial = 2000 ppm), using H2O2 as an oxidant, and acetonitrile as an extractant. Dibenzothiophene (DBT) in the model oil was removed completely within 60 min at 50 degrees C using 20 wt% WOx/meso-SnO2 catalyst. Additionally, the effect of reaction temperature, H2O2/DBT molar ratio, amount of catalyst and different sulfur-containing substrates on the catalytic performances were also investigated in detail. More importantly, the 20 wt% WOx/meso-SnO2 catalyst exhibited 100% surfur-removal efficiency without any regeneration process, even after six times recycling.
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Collections - Graduate School > Chemistry > 1. Journal Articles
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