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<p>The preparation method of catalysts directly influences their performance. The effects of three distinct preparation methods on the high-temperature denitrogenation catalytic activity of Ti–W–O<sub>x</sub> catalysts were investigated. Results indicate that catalysts prepared via the hydrothermal method exhibit optimal performance, achieving near100% NO<sub>x</sub> conversion within the 300–500&#xa0;°C range. It also exhibits outstanding high-temperature stability and maintains robust reactivity under varied operating conditions. Multiple characterisation techniques were employed to analyse the physicochemical properties of the catalysts. Findings indicate that hydrothermally synthesised catalysts with elevated acidity and alkalinity significantly enhance NO and NH<sub>3</sub> adsorption and activation. Concurrently, a marked increase in chemisorbed oxygen content on their surfaces further strengthens the catalysts’ redox properties. This study provides insights for selecting optimal preparation methods and offers a pathway for developing high-temperature, non-toxic denitration catalysts.</p>

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Effect of preparation method on high-temperature denitration catalytic performance of Ti–W–Ox composite oxides

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • Rui Yang,
  • Shiyu Wang,
  • Liguo Chen,
  • Xihao Wang,
  • Tianyu Huang,
  • Qijie Jin,
  • Jing Song,
  • Changcheng Zhou,
  • Haitao Xu

摘要

The preparation method of catalysts directly influences their performance. The effects of three distinct preparation methods on the high-temperature denitrogenation catalytic activity of Ti–W–Ox catalysts were investigated. Results indicate that catalysts prepared via the hydrothermal method exhibit optimal performance, achieving near100% NOx conversion within the 300–500 °C range. It also exhibits outstanding high-temperature stability and maintains robust reactivity under varied operating conditions. Multiple characterisation techniques were employed to analyse the physicochemical properties of the catalysts. Findings indicate that hydrothermally synthesised catalysts with elevated acidity and alkalinity significantly enhance NO and NH3 adsorption and activation. Concurrently, a marked increase in chemisorbed oxygen content on their surfaces further strengthens the catalysts’ redox properties. This study provides insights for selecting optimal preparation methods and offers a pathway for developing high-temperature, non-toxic denitration catalysts.