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<p>Designing efficient catalysts is important for controlling the pollution of chlorinated volatile organic compounds (CVOCs). In this work, chlorobenzene (CB) was selected as the target pollutant. A novel (RuO<sub>2</sub>)<sub><i>x</i></sub>-V<sub>2</sub>O<sub>5</sub>-MoO<sub>3</sub>/TiO<sub>2</sub>(denoted as Ru<sub><i>x</i></sub>-VMoTi, <i>x</i> = 1, 2, 3) catalyst was successfully synthesized by loading different contents of Ru onto V<sub>2</sub>O<sub>5</sub>-MoO<sub>3</sub>/TiO<sub>2</sub> (denoted as VMoTi) via the impregnation method. Activity tests showed that Ru loading significantly enhanced the catalytic performance. Among these, Ru<sub>2</sub>-VMoTi exhibited the best performance, with its T<sub>90</sub> dropping to 250&#xa0;°C, CO<sub>2</sub> yield reaching 75% at 325&#xa0;°C, and demonstrating good stability. A series of characterizations was performed on the catalyst. The results showed that the lattice defects induced by Ru loading promote increased formation of oxygen vacancies (O<sub>v</sub>). Ru loading also increased the number of acidic sites and the low-temperature redox activity of the catalyst, thus enhancing the performance of CB catalytic oxidation. The catalytic oxidation pathway of CB and the promoting mechanism of Ru were further analyzed by in situ DRIFTS and GC–MS. This study provides new insights for designing efficient and stable catalysts for CVOCs through the metal synergistic strategy.</p> Graphical abstract <p></p>

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Catalytic oxidation of chlorobenzene over ruthenium-loaded VMoTi catalyst

  • 期刊论文

  • 发表日期：

    2026年4月29日

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  • Mengjie He,
  • Zunzhu Xu,
  • Weiwei Zou,
  • Ran Wang,
  • Xiaoxian Jin,
  • Xin Jin,
  • Jiwen Zhang

摘要

Designing efficient catalysts is important for controlling the pollution of chlorinated volatile organic compounds (CVOCs). In this work, chlorobenzene (CB) was selected as the target pollutant. A novel (RuO2)x-V2O5-MoO3/TiO2(denoted as Rux-VMoTi, x = 1, 2, 3) catalyst was successfully synthesized by loading different contents of Ru onto V2O5-MoO3/TiO2 (denoted as VMoTi) via the impregnation method. Activity tests showed that Ru loading significantly enhanced the catalytic performance. Among these, Ru2-VMoTi exhibited the best performance, with its T90 dropping to 250 °C, CO2 yield reaching 75% at 325 °C, and demonstrating good stability. A series of characterizations was performed on the catalyst. The results showed that the lattice defects induced by Ru loading promote increased formation of oxygen vacancies (Ov). Ru loading also increased the number of acidic sites and the low-temperature redox activity of the catalyst, thus enhancing the performance of CB catalytic oxidation. The catalytic oxidation pathway of CB and the promoting mechanism of Ru were further analyzed by in situ DRIFTS and GC–MS. This study provides new insights for designing efficient and stable catalysts for CVOCs through the metal synergistic strategy.

Graphical abstract