Jeon Mi-Jin, Park Sung Hoon, Kim Ji Man, Jeon Jong-Ki, Kim Sang Chai, Kim Do Heui, Park Young-Kwon
J Nanosci Nanotechnol. 2014 Mar;14(3):2527-31. doi: 10.1166/jnn.2014.8520.
Low-temperature selective catalytic reduction was carried out over various kinds of manganese oxide (MnOx) catalysts. Mesoporous alpha-Mn2O3, commercial bulk Mn2O3, and Mn/SBA-15 were used as the catalyst. The NOx removal performances of the catalysts were compared. Three different amounts of Mn (5, 10, and 15 wt%) were impregnated on SBA-15 to synthesize Mn/SBA-15. The physical and chemical properties of the catalysts were examined by Brunauer-Emmett-Teller, X-ray diffraction, X-ray photoelectron spectroscopy, and H2-temperature programmed reduction analyses. Of all catalysts examined, mesoporous alpha-Mn2O3 exhibited the highest low-temperature SCR de-NOx efficiency, reaching about 90% at 175 degrees C. This is attributed to strong reducing ability and high oxygen mobility of mesoporous alpha-Mn2O3 and well dispersed Mn2O3 in its mesoporous framework.
在各种锰氧化物（MnOx）催化剂上进行了低温选择性催化还原反应。使用介孔α-Mn2O3、商业块状Mn2O3和Mn/SBA-15作为催化剂。比较了这些催化剂的氮氧化物去除性能。将三种不同含量（5%、10%和15%重量）的锰浸渍在SBA-15上以合成Mn/SBA-15。通过布鲁诺尔-埃米特-泰勒法、X射线衍射、X射线光电子能谱和氢气程序升温还原分析对催化剂的物理和化学性质进行了研究。在所研究的所有催化剂中，介孔α-Mn2O3表现出最高的低温选择性催化还原脱硝效率，在175℃时达到约90%。这归因于介孔α-Mn2O3具有较强的还原能力和较高的氧迁移率，以及Mn2O3在其介孔骨架中良好的分散性。
