CIESC Journal ›› 2010, Vol. 61 ›› Issue (1): 80-85.
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HUANG Haifeng，ZHANG Feng，LU Hanfeng，CHEN Yinfei
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黄海凤，张峰，卢晗锋，陈银飞
Abstract:
MnOx/TiO2(i)，MnOx/TiO2(a) and MnOx/TiO2(c) catalysts were prepared by the impregnation，aggradation and coprecipitation methods respectively，and their properties were characterized with XRD,BET，FTIR,H2-TPR and n-butylamine titration.The results showed that MnOx/TiO2(c) had the largest BET surface area, pore volume and acidity, and the most concentrated pore size distribution and the best dispersion of MnOx on the surface of catalyst. The experiment results of NH3-SCR indicated that MnOx/TiO2 prepared by the coprecipitation method showed the best performance.The catalyst with 20% Mn content yielded 92.9% NO conversion at 140℃ at a space velocity of 60000 h-1.
Key words: MnOx/TiO2, 共沉淀法, 沉积法, 浸渍法, 低温SCR
MnOx/TiO2,
摘要：
采用浸渍法、沉积法以及共沉淀法制备了MnOx/TiO2催化剂。运用XRD、BET、FTIR、H2-TPR和总酸量等技术对催化剂进行了表征，发现以共沉淀法制备的MnOx/TiO2催化剂具有最大的比表面积、孔体积和总酸量，孔径分布最集中，MnOx可以在TiO2表面高度分散。NH3-SCR脱硝活性表明，共沉淀法制备的MnOx/TiO2催化剂脱硝活性最好，当Mn负载量为20%时，高空速（60000 h-1）下，催化剂于140℃时对NO去除率可达92.9 %。
关键词: MnOx/TiO2, 共沉淀法, 沉积法, 浸渍法, 低温SCR
HUANG Haifeng, ZHANG Feng, LU Hanfeng, CHEN Yinfei. Effect of preparation methods on structures and performance of MnOx/TiO2 catalyst for low-temperature NH3-SCR[J]. CIESC Journal, 2010, 61(1): 80-85.
黄海凤, 张峰, 卢晗锋, 陈银飞. 制备方法对低温NH3-SCR脱硝催化剂MnOx/TiO2结构与性能的影响 [J]. 化工学报, 2010, 61(1): 80-85.
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