| 水热法制备铁锰催化剂脱硝性能及抗水抗硫性能研究 |
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| 引用本文： | 唐南,黄妍,李元元,赵永谦,周婷,张俊丰,杨柳春. 水热法制备铁锰催化剂脱硝性能及抗水抗硫性能研究[J]. 分子催化, 2018, 32(3): 240-248 |
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| 作者姓名： | 唐南 黄妍 李元元 赵永谦 周婷 张俊丰 杨柳春 |
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| 作者单位： | 湘潭大学环境与资源学院环境工程与科学系 |
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| 基金项目： | 湖南省高校创新平台开放基金项目（14k094） |
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| 摘 要： | 采用水热法制备了MnO_x-FeO_y催化剂,在固定床模拟燃煤烟气气氛下考察其脱硝活性,并研究催化剂的抗水抗硫性能;采用XRD、BET、TEM、TG、XPS和H2-TPR技术对催化剂进行了表征.结果表明,一步水热法制备的MnO_x-FeO_y(Fe/(Fe+Mn)=0.5)催化剂,在80℃时NO_x脱除率为90%,120℃脱硝效率达到99%.表征发现一步水热法合成的催化剂Mn和Fe之间存在较强的相互作用,Fe的掺杂可降低锰的起始还原温度,促进低温NH_3-SCR反应.且其较大的比表面积以及较低的晶化程度使其具有较高的催化NO_x活性.采用液相沉积-两步水热法制备的催化剂Fe/(Fe+Mn)=0.5HT在温度区间为150~250℃内,NO_x脱除效率达到98%以上,同时该催化剂表现出较优的抗水抗硫性能,10%H_2O和0.6%SO_2同时作用8 h,NO转化率仍维持在73%左右,优于一步水热法合成的催化剂,且经500℃活化再生后,催化剂活性可基本恢复.这可能是由于Fe/(Fe+Mn)=0.5HT催化剂中,FeO_y分散在MnO_x表面,减少了硫酸铵盐和硫酸锰的沉积,提高了催化剂抗硫抗水性能.
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| 关 键 词： | MnOx-FeOy催化剂 水热法 抗水抗硫 低温NH3-SCR |
| 收稿时间： | 2018-02-07 |
| 修稿时间： | 2018-03-25 |
Low Temperature Selective Catalytic Reduction of NO with NH3 over Fe-Mn Catalysts Prepared by Hydrothermal Method |
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| TANG Nan,HUANG Yan,LI Yuan-yuan,ZHAO Yong-qian,ZHOU Ting,ZHANG Jun-feng and YANG Liu-chun. Low Temperature Selective Catalytic Reduction of NO with NH3 over Fe-Mn Catalysts Prepared by Hydrothermal Method[J]. Journal of Molecular Catalysis (China), 2018, 32(3): 240-248 |
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| Authors: | TANG Nan HUANG Yan LI Yuan-yuan ZHAO Yong-qian ZHOU Ting ZHANG Jun-feng YANG Liu-chun |
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| Affiliation: | Department of Environmental Engineering and Science, Xiangtan University, Xiangtan 411105, China,Department of Environmental Engineering and Science, Xiangtan University, Xiangtan 411105, China,Department of Environmental Engineering and Science, Xiangtan University, Xiangtan 411105, China,Department of Environmental Engineering and Science, Xiangtan University, Xiangtan 411105, China,Department of Environmental Engineering and Science, Xiangtan University, Xiangtan 411105, China,Department of Environmental Engineering and Science, Xiangtan University, Xiangtan 411105, China and Department of Environmental Engineering and Science, Xiangtan University, Xiangtan 411105, China |
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| Abstract: | |
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| Keywords: | MnOx-FeOy sulfur resistance hydrothermal method NH3-SCR at low temperature |
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