[1]张亚平,赵晓媛,孙克勤,等.负载型钼氧化物催化剂NH3选择性催化还原NOx[J].东南大学学报(自然科学版),2011,41(5):1030-1035.[doi:10.3969/j.issn.1001-0505.2011.05.026]
　Zhang Yaping,Zhao Xiaoyuan,Sun Keqin,et al.Molybdenum-containing oxide catalysts for selective catalytic reduction of NOx with NH3[J].Journal of Southeast University (Natural Science Edition),2011,41(5):1030-1035.[doi:10.3969/j.issn.1001-0505.2011.05.026]
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负载型钼氧化物催化剂NH3选择性催化还原NOx()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第5期
页码:
1030-1035
栏目:
环境科学与工程
出版日期:
2011-09-20

文章信息/Info

Title:
Molybdenum-containing oxide catalysts for selective catalytic reduction of NOx with NH3
作者:
张亚平; 赵晓媛; 孙克勤; 沈凯; 徐海涛; 周长城
(东南大学能源与环境学院,南京 210096)
Author(s):
Zhang Yaping; Zhao Xiaoyuan; Sun Keqin; Shen Kai; Xu Haitao; Zhou Changcheng
(School of Energy and Environment, Southeast University, Nanjing 210096, China)
关键词:
钼氧化物; 锰氧化物; 催化剂; 浸渍顺序; 氨气选择性催化还原
Keywords:
MoO3;  MnOx;  catalyst;  impregnation order;  NH3-selective catalytic reduction
分类号:
X5
DOI:
10.3969/j.issn.1001-0505.2011.05.026
摘要:
通过浸渍法制备了Mo/TiO2,Mn-Mo/TiO2和Mo-Mn/TiO2三种催化剂,采用X射线衍射(XRD)、比表面积测定(BET)、拉曼光谱(LRS)、原位红外(in situ FT-IR)、扫描电镜(SEM)等技术进行相关的微观表征分析.在模拟氨气选择性催化还原NO的反应条件下(NH3-SCR)对催化剂的脱硝反应活性进行了考察.结果表明,不同浸渍顺序添加锰氧化物后得到的催化剂能够提高NO的脱除效率,但是活性差别很大,其中催化剂Mn-Mo/TiO2的低温活性比较高,活性温度窗口窄,催化剂Mo-Mn/TiO2的高温活性比较高,活性温度窗口宽.模拟烟气中含有0.02%SO2(体积分数)时,催化剂Mn-Mo/TiO2和Mo/TiO2的NO转化率都有所下降,但是添加Mn可提高催化剂Mo/TiO2抗SO2毒性的能力.
Abstract:
A series of molybdenum-containing oxides supported on TiO2, Mo/TiO2, Mn-Mo/TiO2and Mo-Mn/TiO2catalysts, were prepared by impregnation method. These catalysts were characterized by using X-ray diffraction (XRD), BET(brunauer, emmett and teller) surface area, Laser Raman spectroscopy (LRS), scanning electron microscope (SEM) and in situ Fourier transform infrared spectroscopy (in situ FT-IR). Their catalytic performance for the selective catalytic reduction of NO with NH3(NH3-SCR)was investigated. It is found that the addition of manganese oxide increases the NO conversion of Mo/TiO2 catalysts while a big difference of catalytic activity is shown due to different impregnation orders of manganese oxide. Mn-Mo/TiO2 catalyst exhibits better performance at low temperature but within a narrow temperature range compared with the Mo-Mn/TiO2 sample. The introduction of 0. 02% SO2(volume ratio) in the simulated smog reduces the NO conversion of Mn-Mo/TiO2 and Mo/TiO2 catalysts apparently while the manganese-containing Mo/TiO2 catalyst possesses a stronger resistance to SO2.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:张亚平(1979—),女,博士,讲师,amflora@seu.edu.cn.
基金项目:国家高技术研究发展计划(863计划)资助项目(2007AA061802)、江苏省自然科学基金重点资助项目(BK2008001).
引文格式: 张亚平,赵晓媛,孙克勤,等.负载型钼氧化物催化剂NH3选择性催化还原NOx[J].东南大学学报:自然科学版,2011,41(5):1030-1035.[doi:10.3969/j.issn.1001-0505.2011.05.026]
更新日期/Last Update: 2011-09-20