| 制备方法对低温NH_3-SCR脱硝催化剂MnO_x/TiO_2结构与性能的影响 |
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| 引用本文： | 黄海凤,张峰,卢晗锋,陈银飞. 制备方法对低温NH_3-SCR脱硝催化剂MnO_x/TiO_2结构与性能的影响[J]. 化工学报, 2010, 61(1): 80-85 |
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| 作者姓名： | 黄海凤 张峰 卢晗锋 陈银飞 |
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| 作者单位： | 浙江工业大学生物与环境工程学院;浙江工业大学化学工程与材料科学学院,绿色化学合成技术国家重点实验室培育基地,浙江,杭州,310014 |
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| 基金项目： | 浙江省科技厅专项资助项目 |
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| 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%。
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| 关 键 词： | MnO_x/TiO_2 共沉淀法 沉积法 浸渍法 低温SCR |
| 收稿时间： | 2009-07-06 |
| 修稿时间： | 2009-9-17 |
Effect of preparation methods on structures and performance of MnO_x/TiO_2 catalyst for low-temperature NH_3-SCR |
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| HUANG Haifeng,ZHANG Feng,LU Hanfeng,CHEN Yinfei. Effect of preparation methods on structures and performance of MnO_x/TiO_2 catalyst for low-temperature NH_3-SCR[J]. Journal of Chemical Industry and Engineering(China), 2010, 61(1): 80-85 |
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| Authors: | HUANG Haifeng ZHANG Feng LU Hanfeng CHEN Yinfei |
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| Abstract: | MnO_x/TiO_2(i),MnO_x/TiO_2(a) and MnO_x/TiO_2(c) catalysts were prepared by the impregnation,aggradation and coprecipitation methods respectively,and their properties were characterized with XRD,BET,FTIR,H_2-TPR and n-butylamine titration.The results showed that MnO_x/TiO_2(c) had the largest BET surface area, pore volume and acidity, and the most concentrated pore size distribution and the best dispersion of MnO_x on the surface of catalyst. The experiment results of NH_3-SCR indicated that MnO_x/TiO_2 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. |
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| Keywords: | MnOx/TiO2 coprecipitation impregnation aggradation low temperature SCR |
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