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Citation: SU Jian-xun, AI Dong, ZHAO Rong-xiang, LI Xiu-ping. Study of the preparation of CuWO4/C composite and it's application in oxidative desulfurization of model oil[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(12): 1476-1481. shu

Study of the preparation of CuWO4/C composite and it's application in oxidative desulfurization of model oil

  • 1.

    1. College of Petrochemical Engineering, Liaoning University of Petroleum & Chemical Technology, Fushun 113001, China;;

  • Corresponding author: ZHAO Rong-xiang, 
  • Received Date: 3 June 2015
    Available Online: 24 August 2015

  • The CuWO4/C composite was synthesized via a simple mixing-calcination method and characterized by various techniques including X-ray diffraction, scanning electron microscopy, Brunauer-Emmett-Teller and so on. The removal of dibenzothiophene (DBT) in model oil was studied by using CuWO4/C as catalysts, hydrogen peroxide as oxidant, 1-ethyl-3-methylimidazole ethyl sulfate (EMIES) ionic liquid (IL) as the extractant. Results indicated that the CuWO4/C composite exhibited a much higher desulfurization ratio than pure CuWO4 under the same experimental conditions. The influence of reaction temperature, amount of hydrogen peroxide, amount of extractant on the desulfurization efficiency were investigated. The results indicated that under the optimal reaction conditions of 5 mL model oil, 0.02 g of CuWO4/C, 0.2 mL of hydrogen peroxide, 1.0 mL of extractant, reaction temperature 70℃ and reaction time 180 min, the desulfurization efficiency of CuWO4/C was 98.2%. The catalyst could be recycled 4 times without a significant decrease in activity.
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