화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.34, No.12, 3132-3141, December, 2017
DOI10.1007/s11814-017-0229-4  Export Citation
Deep desulfurization of model oil by photocatalytic air oxidation and adsorption using Ti(1.x)MxO2 (M=Zr, Ce)
Wei Zhang1, 2, Xin Li1, 3, Hong Wang1, 2, Yongji Song1, 2, Shenghong Zhang1, and Cuiqing Li1, 2, †
  • 1School of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, P. R. China
  • 2Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing 102617, P. R. China
  • 3School of Chemical Engineering, Beijing University of Chemical Engineering, Beijing 100029, P. R. China
E-mail:
Deep desulfurization of model oil by photocatalytic air oxidation and adsorption using Ti(1-x)MxO2 (M=Zr, Ce) was investigated. Ti(1-x)MxO2 (M=Zr, Ce) was prepared by urea gelation/co-precipitation method, and characterized by N2 adsorption, XRD and UV-vis spectra. UV irradiation greatly enhanced the adsorptive capacity and selectivity of TiO2-ZrO2 for organosulfur in model oil because organosulfur compounds were first photocatalytically oxidized to sulfoxides and sulfones over TiO2-ZrO2, which were then selectively adsorbed on the bifunctional material due to much higher polarities of generated sulfoxides and sulfones. The Ti/Zr molar ratio and calcination temperature were optimized to 5 : 5 and 500 oC with the sulfur removal of 99.6% after reaction for 2 h under UV irradiation. After adding 25 wt% toluene into model oil, the sulfur removal could still reach 97.2% after reaction for 7 h. TiO2-ZrO2 could be well regenrated by washing with acetonitrile followed by thermal treatment in air.
Keywords:Adsorptive Desulfurization;Photocatalysis;Dibenzothiophene;Selectivity;TiO2-ZrO2
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