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Kinetics for Oxidation of Dibenzothiophene Catalyzed by Keggin-based Heteropoly Acids/H 2 O 2 in [bmim]BF 4.

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  • Additional Information
    • Abstract:
      Extraction and catalytic oxidative desulfurization (ECODS) could successfully integrate phosphomolybdic acid (H3PMo12O4026H2O, PMo12), hydrogen peroxide (H2O2), and 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim]BF4) into a single efficient system that was manipulated to facilitate the separation and oxidation of sulfur compounds. The peroxometal complex was formed rapidly as PMo12 was oxidized by H2O2 and it could be solubilized in hydrophilic ionic liquid. The experimental results showed high sulfur removal up to 99.4% under the optimized desulfurization system. Kinetics of the ECODS system of dibenzothiophene was pseudo first order with the apparent activation energy of 53.8 kJ·mol−1. The catalytic reaction system could be recycled eight times without a significant decrease in reaction activity. [ABSTRACT FROM AUTHOR]
    • Abstract:
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