【摘要】 为制备宽温脱硝催化剂，采用机械研磨方法获得了TiO₂和ZSM-5混合载体，并采用浸渍法制备了负载型MnO_x/TiO₂-ZSM-5脱硝催化剂。对制得的催化剂进行了X射线衍射（XRD）、N₂等温吸附-脱附、H₂程序升温还原（H₂-TPR）、NH₃程序升温脱附（NH₃-TPD）和NO程序升温脱附（NO-TPD）等表征，并考察了其催化脱硝活性。结果表明：MnO_x/TiO₂-ZSM-5催化剂具有较大的比表面积、更多的表面活泼锰物种、较多的酸位点，其对低温NH₃和NO吸附量及高温NH₃吸附量均有所增加，从而表现出更好的脱硝催化活性，在200～350℃时NO转化率达99%以上。更多还原

【Abstract】 To prepare a wide temperature denitration catalyst,a mixed support of TiO₂ and ZSM-5 was obtained using mechanical grinding method,and supported MnO_x/TiO₂-ZSM-5 denitration catalysts was prepared by impregnation method.The prepared catalysts were characterized by X-ray diffraction （XRD）,N₂isothermal adsorption-desorption,H₂ temperature program reduction （H₂-TPR）,NH₃ temperature programmed desorption （NH₃-TPD） and NO temperature programmed desorption （NO-TPD）.And the catalytic denitrification activity was investigated too.The results showed that MnO_x/TiO₂-ZSM-5 catalyst exhibited larger specific surface area,more active manganese species and more acid sites,which increased the adsorption capacity of the catalyst for NH₃ and NO at low-temperature and NH₃ at high-temperature,resulting in better catalytic activity for denitrification.The conversion of NO over MnO_x/TiO₂-ZSM-5catalyst reached more than 99%at 200-350℃.更多还原