Coal-fired power plants are known for emitting substantial amounts of nitrogen oxides (NOx) and volatile organic compounds (VOCs) during operation. In this study, the utilization of Mn–CeOx catalysts for the simultaneous removal of these pollutants was explored. The catalysts were synthesized through the co-precipitation technique, and their material structure and active sites were analyzed through XRD, TEM, NH3-TPD, XPS, and in-situ DRIFTs characterization methodologies. The DFT calculations indicated that VOCs and NOx were efficiently adsorbed and activated on the catalyst surface and then converted into less harmful substances (CO2, N2, and H2O). Additionally, the potential reaction pathways occurring on the catalyst surface were investigated. Furthermore, the effectiveness of the Mn–CeOx catalyst in simultaneously reducing NOx and VOCs under low-temperature conditions was assessed. The experimental results validated the exceptional performance of the Mn–CeOx catalyst in eliminating both NOx and VOCs. Furthermore, the underlying mechanisms governing the catalytic process were comprehensively investigated.

中文翻译：

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用于低温下同时去除 NOx、C6H6 和 C7H8 的 Mn-CeOx 催化剂：实验和 DFT 研究


众所周知，燃煤发电厂在运行过程中会排放大量的氮氧化物 （NOx） 和挥发性有机化合物 （VOC）。在这项研究中，探索了利用 Mn-CeOx 催化剂同时去除这些污染物。通过共沉淀技术合成催化剂，并通过 XRD、TEM、NH3-TPD、XPS 和原位 DRIFTs 表征方法分析其材料结构和活性位点。DFT 计算表明，VOCs 和 NOx 在催化剂表面被有效吸附和活化，然后转化为危害较小的物质（CO2、N2 和 H2O）。此外，还研究了催化剂表面发生的潜在反应途径。此外，还评估了 Mn-CeOx 催化剂在低温条件下同时减少 NOx 和 VOC 的有效性。实验结果验证了 Mn-CeOx 催化剂在去除 NOx 和 VOC 方面的卓越性能。此外，还全面研究了控制催化过程的潜在机制。