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<p>CO in coal mine underground spaces can easily cause casualties among miners. The humidity in coal mines is relatively high, and traditional Cu-Mn catalysts are prone to deactivation. Compared to traditional Cu-Mn catalysts, doping with Sn enhances the activity and water resistance of Cu-Mn catalysts. The Cu-Mn-Sn catalyst was tested using XPS, FTIR, and a self-made Activity Test Experimental System, with partial data processed using the Avantage software. The results show that Sn increases the number of active sites (Cu<sup>+</sup>) on the Cu-Mn catalyst and the proportion of surface adsorbed oxygen (O<sub>ads</sub>) and surface lattice oxygen (O<sub>lat</sub>) in O 1s, which is the reason for the improved activity of the Cu-Mn-Sn catalyst. Sn weakens the coordination bond between Cu<sup>2+</sup> and H<sub>2</sub>O, reducing the formation of CO<sub>3</sub><sup>2−</sup>, which is the reason for the improved water resistance of the catalyst.</p>

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Study on the catalytic mechanism and water resistance of Cu-Mn-Snx catalyst for CO elimination

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年1月30日

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  • Yashengnan Sun,
  • Rongtao Zhu,
  • Gang Bai,
  • Tianyu Xin,
  • Jinyu Li,
  • Xihua Zhou,
  • Wenjing Chang,
  • Jue Wang,
  • Mufeng Xiao

摘要

CO in coal mine underground spaces can easily cause casualties among miners. The humidity in coal mines is relatively high, and traditional Cu-Mn catalysts are prone to deactivation. Compared to traditional Cu-Mn catalysts, doping with Sn enhances the activity and water resistance of Cu-Mn catalysts. The Cu-Mn-Sn catalyst was tested using XPS, FTIR, and a self-made Activity Test Experimental System, with partial data processed using the Avantage software. The results show that Sn increases the number of active sites (Cu+) on the Cu-Mn catalyst and the proportion of surface adsorbed oxygen (Oads) and surface lattice oxygen (Olat) in O 1s, which is the reason for the improved activity of the Cu-Mn-Sn catalyst. Sn weakens the coordination bond between Cu2+ and H2O, reducing the formation of CO32−, which is the reason for the improved water resistance of the catalyst.