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实验制备并测试MnOx/Ti-PILCs的低温(80~260℃)SCR脱硝活性,发现当MnOx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O2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 MnOx/Ti-PILC(300)依然表现出较高活性.MnOx/Ti-PILC与MnOx/A12O3活性相当,高于MnOx/TiO2.

参考文献

[1] Gongshin Qi;Ralph T.Yang;Ramsay Chang .MnO_x-CeO_2 mixed oxides prepared by co-precipitation for selective catalytic reduction of NO with NH_3 at low temperatures[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2004(2):93-106.
[2] Gongshin Qi;Ralph T. Yang .Performance and kinetics study for low-temperature SCR of NO with NH_3 over MnO_x-CeO_2 catalyst[J].Journal of Catalysis,2003(2):434-441.
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[5] Binitha, NN;Sugunan, S .Preparation, characterization and catalytic activity of titania pillared montmorillonite clays[J].Microporous and Mesoporous Materials,2006(1/3):82-89.
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