MnO_x/Ti-PILC低温NH_3-SCR脱除NO研究  

Study on MnO_x/Ti-PILC for NH_3-SCR of NO at Low Temperature

作　　者：马宏卿[1] 姚燕[1] 马娟[1] 沈伯雄[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071

出　　处：《工程热物理学报》2013年第1期164-167,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50976050;No.51176077);环保公益性行业科研专项经费(No.201109004)

摘　　要：实验制备并测试MnO_x/Ti-PILCs的低温(80～260℃)SCR脱硝活性,发现当MnO_x负载量为10%,催化剂煅烧温度为300℃时催化剂表面酸性较强,活性成分分散较好,脱硝活性最佳,在180℃下,NO脱除效率接近100%。研究了氧浓度和空速等对脱硝效率的影响,发现O_2浓度为3%时,对催化剂最为有利;在65000 h^(-1)的高空速条件下,10 MnO_x/Ti-PILC(300)依然表现出较高活性。MnO_x/Ti-PILC与MnO_x/Al_2O_3活性相当,高于MnO_x/TiO_2。Series of MnO_x/Ti-PILCs were prepared and investigated the low temperature-SCR activity,the results showed that MnO_x/Ti-PILC with 10%MnO_x loadings and calcined at 300℃, which exhibited good surface acidity and dispersed MnO_x,revealed the highest activity,NO conversion reached nearly 100%at 180℃.Effect of O_2 concentration and space velocity was also discussed,3% O_2 concentration was preferred and the catalyst still showed performance even at high space velocity of 65000 h^（-1）.Finally,MnO_x/Ti-PILC was equivalent to MnO_x/Al_2O_3 in catalytic activity,which was higher than MnO_x/TiO_2.

关 键 词：MnO_x Ti-PILC 低温 选择性催化还原 

分 类 号：X701[环境科学与工程—环境工程]