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<p>The activity of combined Co—V/SiO<sub>2</sub> oxide catalysts in the ozone-catalytic oxidation (OZCO) of volatile organic compounds (VOCs) using <i>n</i>-butane as a model compound was studied. The two-component Co<sub>3</sub>O<sub>4</sub>—V<sub>2</sub>O<sub>5</sub>/SiO<sub>2</sub> catalysts were shown to be much more efficient in VOCs oxidation at temperatures of 50–150 °C then the one-component Co<sub>3</sub>O<sub>4</sub>/SiO<sub>2</sub> and V<sub>2</sub>O<sub>5</sub>/SiO<sub>2</sub> systems. An enhanced efficiency of ozone-catalytic oxidation on the two-component Co<sub>3</sub>O<sub>4</sub>—V<sub>2</sub>O<sub>5</sub>/SiO<sub>2</sub> catalysts can be interpreted to mean that a bifunctional route is operative according to which the ozone decomposition step with the formation of highly reactive atomic oxygen (O*) proceeds on Co sites and the <i>n</i>-C<sub>4</sub>H<sub>10</sub> activation step proceeds on V sites.</p>

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Bifunctional Co—V/SiO2 catalyst for the ozone-catalytic oxidation of volatile organic compounds

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • D. A. Bokarev,
  • A. V. Rassolov,
  • G. O. Bragina,
  • G. N. Baeva,
  • I. A. Chetyrin,
  • A. V. Bukhtiyarov,
  • A. Yu. Stakheev

摘要

The activity of combined Co—V/SiO2 oxide catalysts in the ozone-catalytic oxidation (OZCO) of volatile organic compounds (VOCs) using n-butane as a model compound was studied. The two-component Co3O4—V2O5/SiO2 catalysts were shown to be much more efficient in VOCs oxidation at temperatures of 50–150 °C then the one-component Co3O4/SiO2 and V2O5/SiO2 systems. An enhanced efficiency of ozone-catalytic oxidation on the two-component Co3O4—V2O5/SiO2 catalysts can be interpreted to mean that a bifunctional route is operative according to which the ozone decomposition step with the formation of highly reactive atomic oxygen (O*) proceeds on Co sites and the n-C4H10 activation step proceeds on V sites.