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

作者：Yashengnan Sun, Rongtao Zhu, Gang Bai, Tianyu Xin, Jinyu Li, Xihua Zhou, Wenjing Chang, Jue Wang, Mufeng Xiao · 发表于：Scientific Reports · 年份：2025 · DOI：10.1038/s41598-025-86011-0 · 被引用次数：6 · 研究领域：Catalytic Processes in Materials Science、Catalysts for Methane Reforming、Industrial Gas Emission Control

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 (O ads ) and surface lattice oxygen (O lat ) in O 1s, which is the reason for the improved activity of the Cu-Mn-Sn catalyst. Sn weakens the coordination bond between Cu 2+ and H 2 O, reducing the formation of CO 3 2− , which is the reason for the improved water resistance of the catalyst.