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Mn-CeOx/Ti-PILCs for selective catalytic reduction of NO with NH_3 at low temperature 被引量：18

Mn-CeOx/Ti-PILCs for selective catalytic reduction of NO with NH_3 at low temperature
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摘要 Titanium-pillared clays （Ti-PILCs） were obtained by different ways from TiCl4, Ti（OC3H7）4 and TiOSO4, respectively. Mn-CeOx/Ti- PILCs were then prepared and their activities of selective catalytic reduction （SCR） of NO with NH3 at low-temperature were evaluated. Mn-CeOx/Ti-PILCs were characterized by X-ray diffraction, N2 adsorption, Fourier transform infrared spectroscopy, thermal analysis, temperature-programmed desorption of ammonia and H2-temperature-programmed reduction. It was found that Ti-pillar tend to be helpful for the enlargement of surface area, pore volume, acidity and the enhancement of thermal stability for Mn-CeOx/Ti-PILCs. Mn- CeOx/Ti-PILCs catalysts were active for the SCR of NO. Among three resultant Mn-CeOx/Ti-PILCs, the catalyst from TiOSO4 showed the highest activity with 98% NO conversion at 220°C, it also exhibited good resistance to H2O and SO2 in flue gas. The catalyst from TiCl4 exhibited the lowest activity due to the unsuccessful pillaring process. Titanium-pillared clays （Ti-PILCs） were obtained by different ways from TiCl4, Ti（OC3H7）4 and TiOSO4, respectively. Mn-CeOx/Ti- PILCs were then prepared and their activities of selective catalytic reduction （SCR） of NO with NH3 at low-temperature were evaluated. Mn-CeOx/Ti-PILCs were characterized by X-ray diffraction, N2 adsorption, Fourier transform infrared spectroscopy, thermal analysis, temperature-programmed desorption of ammonia and H2-temperature-programmed reduction. It was found that Ti-pillar tend to be helpful for the enlargement of surface area, pore volume, acidity and the enhancement of thermal stability for Mn-CeOx/Ti-PILCs. Mn- CeOx/Ti-PILCs catalysts were active for the SCR of NO. Among three resultant Mn-CeOx/Ti-PILCs, the catalyst from TiOSO4 showed the highest activity with 98% NO conversion at 220°C, it also exhibited good resistance to H2O and SO2 in flue gas. The catalyst from TiCl4 exhibited the lowest activity due to the unsuccessful pillaring process.
作者 Boxiong Shen Hongqing Ma Yan Yao
机构地区 College of Environmental Science and Engineering
出处 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2012年第3期499-506,共8页 环境科学学报（英文版）
基金 supported by the National Natural Science Foundation of China (No. 50976050, 51176077) the Research Fund for International Young Scientists (NO.51150110155)
关键词 Mn-CeOx/Ti-PILCs titania-pillared methods LOW-TEMPERATURE SCR Mn-CeOx/Ti-PILCs titania-pillared methods low-temperature SCR
分类号 O643.3 [理学—物理化学] X701 [环境科学与工程—环境工程]
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参考文献38

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Journal of Environmental Sciences
2012年 第3期

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