| SHS方法制备的锰铁系NH3-SCR催化剂的性能研究和机理分析 |
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| 引用本文： | 朱霖,林赫,管斌,黄震.SHS方法制备的锰铁系NH3-SCR催化剂的性能研究和机理分析[J].车用发动机,2012(3):72-77. |
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| 作者姓名： | 朱霖 林赫 管斌 黄震 |
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| 作者单位： | 上海交通大学动力机械及工程教育部重点实验室,上海,200240 |
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| 摘 要： | 为提高传统选择性催化还原(SCR)催化剂低温窗口的NO去除效率,运用自蔓延高温合成法(Self-Propagating High-temperature Synthesis)制备了一系列低温锰铁系催化剂.对其在SCR法去除NO中的反应性能进行评价,分析了活性组分和液相点燃温度的影响；利用X射线衍射仪(XRD)对催化剂晶...
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| 关 键 词： | 氮氧化物 催化剂 选择性催化还原 原位漫反射 红外光谱 表面酸性 |
Investigations of Performance and Mechanism on SHS-prepared Ferromanganese NH3-SCR Catalyst |
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| ZHU Lin
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LIN He
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GUAN Bin
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HUANG Zhen.Investigations of Performance and Mechanism on SHS-prepared Ferromanganese NH3-SCR Catalyst[J].Vehicle Engine,2012(3):72-77. |
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| Authors: | ZHU Lin LIN He GUAN Bin HUANG Zhen |
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| Institution: | (Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | To improve NO removal efficiency of low temperature SCR catalyst,a series of ferromanganese catalysts were prepared with the method of self-propagating high-temperature synthesis（SHS）.The performance of catalyst in DeNO reaction was evaluated and the influences of active components and liquid ignition temperature were analyzed.The crystal form of catalyst was characterized by X-ray diffraction device and the mechanism of reaction was researched with in situ DRIFTS technology. The experimental results show that MnOx has a high activity at low temperature.The introduced Fe improves the N2 selectivity and keeps the activity at low temperature.The performance of SHS-prepared catalyst decreases with the increase of ignition temperature.The in-situ analysis indicates that both BrφΦnsted acid and Lewis acid participate in the SCR reaction of Ti0.9 Mn0.05Fe0.05O2-8 and that the former has a higher activity.In addition,the monodentate nitrate is the key active nitrate species. |
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| Keywords: | nitrogen oxides catalyst SCR in situ diffuse reflectance infrared spectrum surface acidity |
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