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中文摘要：
以锆钛复合氧化物为载体，制备整体式Mn基催化剂并研究其在低温氨选择性催化还原（NH3-SCR）氮氧化物反应中的性能；用BET、XRD、储氧量（OSC）、程序升温还原（TPR）和XPS对催化剂进行表征．实验结果表明，与以TiO2为载体的催化剂相比，以ZrO2-TiO2为载体的催化剂具有较大的比表面积、更稳定的晶相结构和较多的储氧量，并具有较强的低温氧化性能和较高的表面Mn含量，表现出良好的低温活性和高温稳定性．在700℃焙烧后，Mn-Fe／ZrO2-TiO2在高空速55000h-1条件下，仍具有较好的起燃温度（182℃）和NO的转化率（78％），并具有较强的抗水性能，表现出很好的应用前景．
英文摘要：
The catalytic properties of the monolith ZrO2-TiO2 supported Mn-based catalysts were studied for NH3-SCR reaction at low temperature. The catalysts were characterized by specific surface area measurements （ BET）, X-ray diffraction （ XRD）, oxygen storage capacity （ OSC ） , temperature programmed reduction （TPR） and X-ray photoelectron spectroscopy （XPS）. The results indicate that, compared to the catalysts supported on TiO2,the catalysts supported on ZrO2-TiO2 have higher surface area, more steady structure, more OSC, stronger redox properties as well as higher concentration of surface Mn and have good activity at low temperature and excellent stability at high temperature. After Mn-Fe/ZrO2-TiO2 is calcined at 700 ℃, the light-off temperature of the catalyst is 182 ℃ and NO conversion is 78% at a high space velocity of 55000 h-1, and the catalyst is water-resistant. It shows great potential for practical application.
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