Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China.
Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China.
Environ Sci Pollut Res Int. 2019 Sep;26(27):27940-27952. doi: 10.1007/s11356-019-05976-4. Epub 2019 Jul 26.
A series of MnO/ACF, Ce-MnO/ACF, and Fe-Ce-MnO/ACF catalysts on selective catalytic reduction (SCR) of NO with NH at low-middle temperature had been successfully prepared through ultrasonic impregnation method, and the catalysts were characterized by SEM, XRD, BET, H-TPR, NH-TPD, XPS, and FT-IR spectroscopy, respectively. The results demonstrated that the 15 wt% Fe-Ce-MnO/ACF catalyst achieved 90% NO conversion (100~300 °C), good water resistance, and stability (175 °C). The excellent catalytic performance of the Fe-Ce-MnO/ACF catalyst was mainly attributed to the interaction among Mn, Ce, and Fe. The doping of Fe promoted the dispersion of Ce and Mn and the formation of more Mn and chemisorbed oxygen on the surface of a catalyst. This work laid a foundation for the successful application of active carbon fiber in the field of industrial denitrification, especially in the aspect of denitrification moving bed. Graphic abstract.
通过超声浸渍法成功制备了一系列 MnO/ACF、Ce-MnO/ACF 和 Fe-Ce-MnO/ACF 催化剂，用于 NH3 在中低温下选择性催化还原（SCR）NO。采用 SEM、XRD、BET、H-TPR、NH3-TPD、XPS 和 FT-IR 光谱分别对催化剂进行了表征。结果表明，15wt%Fe-Ce-MnO/ACF 催化剂在 100~300°C 时实现了 90%的 NO 转化率，具有良好的耐水性和稳定性（175°C）。Fe-Ce-MnO/ACF 催化剂具有优异的催化性能，主要归因于 Mn、Ce 和 Fe 之间的相互作用。Fe 的掺杂促进了 Ce 和 Mn 的分散以及更多 Mn 和化学吸附氧在催化剂表面的形成。这项工作为活性碳纤维在工业脱硝领域，特别是在脱硝移动床方面的成功应用奠定了基础。
