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中文摘要：
以MnOx为活性组分，CeO2为助剂，ZrO2-TiO2为载体制备了MnOx-CeO2／ZrO2-TiO2整体式催化剂，考察了焙烧温度对该催化剂上NH3低温选择性催化还原反应（NH3-SCR）的影响．通过X射线衍射、比表面积测定、储氧量测定和X射线光电子能谱等手段对催化剂进行了表征．结果表明，催化剂的织构性能和储氧量对低温NH3-SCR反应有较大的影响，活性组分锰以＋3价和＋4价共存时具有最好的低温活性．该催化剂经600℃焙烧后，在空速为36000h^-1时，反应有最低的起燃温度160℃和很宽的反应温度窗口176～393℃（转化率为60％～95％）．该催化剂在固定源，尤其在移动源柴油车上催化净化氮氧化物具有良好的应用前景．
英文摘要：
A MnOx-CeO2/ZrO2-TiO2 monolith catalyst was prepared using MnOx as the active component, CeO2 as the promoter, and ZrO2-TiO2 as the carrier. The influence of calcination temperature on the catalytic performance was studied. The catalyst was characterized by X-ray diffraction, specific surface area measurements, oxygen storage capacity （OSC） measurements, and X-ray photoelectron spectroscopy. The results showed that the texture and OSC had vital influence on the low-temperature selective catalytic reduction （SCR） of NO with NH3. The catalyst showed the highest low-temperature activity when Mn^3 ＋ and Mn^4 ＋ were co-existed. Furthermore, after calcination at 600℃ , the monolith catalyst had not only the lowest light-off temperature （160℃） but also a wide temperature window （ 176-393 ℃ ）, and NO conversion was 60%-95 % at the high space velocity of 36 000 h^- 1, indicating the excellent stability of the catalyst. The catalyst had good application for fixed pollution source de-NOx, especially for diesel engine SCR.
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