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Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (11): 2222.

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Removal of Sulfur Compounds from Simulated Oil with Oxidation by Quaternary Ammonium Peroxotungsto Phosphate Catalysts

CUI Bao-Chen*, LIU Shu-Zhi, LIU Wei, WANG Bao-Hui   

  1. College of Chemical Engineering, Daqing Petroleum Institute, Daqing 163318, China
  • Received:2009-03-02 Online:2009-11-10 Published:2009-11-10
  • Contact: CUI Bao-Chen. E-mail: lszcbccx@163.com
  • Supported by:

    黑龙江省杰出青年基金(批准号: B2004-01)资助.

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Abstract:

Catalytic oxidation desulfurization of thiophene-type sulfides, benzothiophene(BT) and dibenzothiophene(DBT), in simulated oil using H2O2 as oxidant and quaternary ammonium peroxotungsto phosphate as the catalyst was investigated. Effect of amount of catalyst, reaction temperature, reaction time and oxidant/oil volume ratio on catalytic oxidation desulfurization was investigated. The results show that the conversions of dienzothiophene and benzothiophene reach above 96.48% and 99.42% respectively, under the conditions of amount of catalyst 0.48%, H2O2/Oil volume ratio of 1∶50, temperature of 60 ℃ after reaction 60 min. The kinetic study indicate that catalytic oxidation desulfurization of simulated oil over peroxy phosphotungstic acid is pseudo first-order reaction.

Key words: Oxidation desulfurization; Quaternary ammonium peroxotungsto phosphate; Benzothiophene; Dibenzothiophene; Kinetics

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