Mn、Ce负载顺序对催化剂Mn-Ce/TiO2低温脱硝活性的影响

doi:10.16085/j.issn.1000-6613.2015.06.025

化工进展 ›› 2015, Vol. 34 ›› Issue (06): 1652-1655.DOI: 10.16085/j.issn.1000-6613.2015.06.025

Mn、Ce负载顺序对催化剂Mn-Ce/TiO₂低温脱硝活性的影响

闫东杰, 玉亚, 徐颖, 黄学敏

西北水资源与环境生态教育部重点实验室, 西安建筑科技大学环境与市政工程学院, 陕西西安 710055

收稿日期:2014-10-11 修回日期:2014-12-03 出版日期:2015-06-05 发布日期:2015-06-05
通讯作者: 闫东杰(1981—),男,博士,讲师,主要从事大气污染控制研究。E-mail:yandongjie_2000@163.com。
作者简介:闫东杰(1981—),男,博士,讲师,主要从事大气污染控制研究。E-mail:yandongjie_2000@163.com。
基金资助:
陕西省教育厅科研计划(14JK1392)及西安建筑科技大学科技基金(DB03132、DA03124)项目。

Effect of loading sequence of Mn and Ce on the activity of Mn-Ce/TiO₂catalysts at low-temperature

YAN Dongjie, YU Ya, XU Ying, HUANG Xuemin

Key Laboratory of Northwest Water Resource, Environment and Ecology, Minisery of Education, School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, Shaanxi, China

Received:2014-10-11 Revised:2014-12-03 Online:2015-06-05 Published:2015-06-05

摘要/Abstract

摘要： 采用溶胶凝胶法制备了一系列Mn-Ce/TiO₂催化剂样品, 并用比表面积及孔径分析仪(BET)、X射线衍射仪(XRD)和扫描电子显微镜(SEM)等对催化剂进行了表征, 考察了活性组分Mn、Ce负载顺序对催化剂结构的影响, 并在固定床连续流动反应器上对其催化活性进行了评价。结果表明, 催化剂晶相均为锐钛矿型结构, Mn、Ce活性组分在载体表面高度分散或形成了无定形结构;Mn、Ce同时负载时催化剂表面活性组分分布均匀, 比表面积最大, 为97.6m²/g, 且催化剂孔径分布以中孔为主;Mn、Ce同时负载时催化剂活性最好, 反应温度为200℃时, NO转化率达到90%以上。

关键词: 催化剂, 选择催化还原, 活性, 负载顺序, 烟气脱硝

Abstract: Manganese and cerium oxide catalysts were prepared by sol-gel method and used for the low-temperature selective catalytic reduction (SCR) of NO with NH₃. The catalysts were characterized by BET surface area, X-ray diffraction (XRD) and scanning electron microscope (SEM). The influence of loading sequence on the structure of Mn-Ce/TiO₂ catalysts was investigated. The results showed that the phase structure of catalysts was anatase. Mn and Ce distributed in amorphous form. When Mn and Ce were supported on same carrier, the specific surface area of catalyst was the largest, which achieved 97.6m²/g, and active components of Mn and Ce were well distributed. The catalyst activity was also the highest when Mn and Ce were supported on same carrier. The NO removal efficiency was above 90%, when the reaction temperature was 200℃.

Key words: catalyst, selective catalytic reduction (SCR), reactivity, loading sequence, flue gas denitration

中图分类号:

X511

闫东杰, 玉亚, 徐颖, 黄学敏. Mn、Ce负载顺序对催化剂Mn-Ce/TiO₂低温脱硝活性的影响[J]. 化工进展, 2015, 34(06): 1652-1655.

YAN Dongjie, YU Ya, XU Ying, HUANG Xuemin. Effect of loading sequence of Mn and Ce on the activity of Mn-Ce/TiO₂catalysts at low-temperature[J]. Chemical Industry and Engineering Progree, 2015, 34(06): 1652-1655.

参考文献

[1] 郝吉明, 马广大, 王书肖. 大气污染控制工程[M]. 北京:高等教育出版社, 2010:389-404.
[2] Shen B X, Ma H Q, He C, et al. Low temperature NH₃-SCR over Zr and Ce pillared clay based catalysts[J]. Fuel Processing Technology, 2014, 119:121-129.
[3]
Shen K, Zhang Y P, Wang X L, et al. Influence of chromium modification on the properies of MnO_x-FeO_x catalysts for the low-temperature selective catalytic reduction of NO by NH₃[J]. Journal of Energy Chemistry, 2013, 22(4):617-623.
[4] Eigenmann F, Maciejewski M, Baiker A . Selective reduction of NO by NH₃ over manganese-cerium mixed oxides:Relation between adsorption, redox and catalytic behavior[J]. Applied Catalysis B:Environmental, 2006, 62(3-4):311-318.
[5] 沈伯雄, 郭宾彬, 史展亮, 等. CeO₂/ACF的低温SCR烟气脱硝性能研究[J]. 燃料化学学报, 2007, 35(1):125-128.
[6] Chen Z H, Yang Q, Li H, et al. Cr-MnO_x mixed-oxide catalysts for selective catalytic reduction of NO_x with NH₃ at low temperature[J]. Journal of Catalysis, 2010, 276:56-65.
[7] Liu F D, Asakura K, He H. Influence of calcination temperature on iron titanate catalyst for the selective catalytic reduction of NO_x with NH₃[J]. Catalysis Today, 2011, 164:520-527.
[8] 马倩, 胡将军, 李闯, 等. CeO₂-CoO/ACF低温SCR烟气脱氮性能的研究[J]. 环境工程学报, 2010, 4(4):899-903.
[9] 张亚平, 汪小蕾, 孙克勤, 等. WO₃对MnO_x/TiO₂低温脱硝SCR催化剂的改性研究[J]. 燃料化学学报, 2011, 39(10):782-786.
[10] Zhang R, Zhang Q, Zhao W, et al. Promotional effect of fluorine on the selective catalytic reduction of NO with NH₃ over CeO₂-TiO₂ catalyst at low temperature[J]. Applied Surface Science, 2014, 289:237-244.
[11] 耿春香, 刘文蓉, 柴倩倩, 等. Mn-Ce/TiO₂低温脱硝催化剂的性能[J]. 化工进展, 2012, 31(6):1353-1356.
[12] Xu W Q, He H, Yu Y B. Deactivation of a Ce/TiO₂ catalyst by SO₂ in the selective catalytic reduction of NO by NH₃[J]. Journal of Physical Chemistry C, 2009, 113(11):4426-4432.
[13] Wang J P, Yan Z, Liu L L, et al. Low-temperature SCR of NO with NH₃ over activated semi-coke composite-supported rare earth oxides[J]. Applied Surface Science, 2014, 309:1-10.
[14] Gao X, Jiang Y, Zhong Y, et al. The activity and characterization of CeO₂-TiO₂ catalysts prepared by the sol-gel method for selective catalytic reduction of NO with NH₃[J]. J. Hazard. Mater., 2010, 174(1-3):734-739.
[15] Liu F, He H, Zhang C, et al. Selective catalytic reduction of NO with NH₃ over iron titanate catalyst:Catalytic performance and characterization[J]. Appl. Catal. B, 2010, 96(3-4):408-420.

Mn、Ce负载顺序对催化剂Mn-Ce/TiO₂低温脱硝活性的影响

Effect of loading sequence of Mn and Ce on the activity of Mn-Ce/TiO₂catalysts at low-temperature

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