Manganese-containing soil (M-S) is a solid waste generated from the mining and extraction of manganese ore. In this study, the low-temperature denitration performance of Mn-S was investigated via XRF, XRD, XPS, H₂-TPR, NH₃-TPD and DRIFTS, aiming at exploring its utilization approach as low-temperature NH₃-SCR catalyst. The results showed that Mn-S exhibited a relatively high catalytic activity reaching over 75% NO conversion from 150°C to 200°C. The physical and chemical properties of Mn-S were studied, indicating that the manganese content of Mn-S reached 8.2% with mainly surface Mn atomic valence state of Mn³⁺. In situ DRIFTS results revealed the SCR reaction mechanism of Mn-S, suggesting that Mn-S obeyed the E-R reaction mechanism. The Ce/Mn-S catalyst was synthesized by impregnation method. The denitration activity improved and reached 92.4% at 200°C. A series of characterizations were studied to investigate the strengthening mechanism after doping Ce. It’s found that introducing of Ce could increase the content of Mn⁴⁺ and chemisorbed oxygen, NH₃ adsorption capacity and reducibility. It was found from in situ DRIFTS experiments that doping of Ce changed the reaction mechanism due to the conversion of inactive substance, which was mainly affected by E-R and L-H.

含锰土壤（MS）是从锰矿石的开采和提取中产生的固体废物。本研究通过XRF，XRD，XPS，H ₂ -TPR，NH ₃ -TPD和DRIFTS研究了Mn-S的低温脱硝性能，旨在探索其作为低温NH ₃ -SCR催化剂的利用方法。。结果表明，Mn-S表现出相对较高的催化活性，从150°C到200°C的NO转化率超过75％。研究了Mn-S的理化性质，表明Mn-S的锰含量达到8.2％，主要以Mn ^3+的表面Mn原子价态存在。。原位DRIFTS结果揭示了Mn-S的SCR反应机理，表明Mn-S遵循ER反应机理。通过浸渍法合成了Ce / Mn-S催化剂。脱硝活性提高，在200℃下达到92.4％。研究了一系列表征，以研究掺杂Ce后的强化机理。研究发现，铈的引入可以增加Mn ⁴⁺的含量和化学吸附的氧，NH _3的吸附能力和还原性。从原位DRIFTS实验中发现，铈的掺杂由于惰性物质的转化而改变了反应机理，而惰性物质的转化主要受ER和LH的影响。