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N-Doped FeCo/ASC catalysts for NOx reduction by CO in a simulated rotary reactor

机译：n型摘要/ ASC氮氧化物还原的催化剂有限公司在一个模拟的扶轮反应堆

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Herein, nitrogen-doped activated semi-coke (ASC)-supported ferrum cobalt-co-impregnated catalysts (FeCo/N-ASC) were prepared and tested for deNO(x) in a simulated rotary reactor. The experimental results showed that FeCo/N-ASC-3 was an optimal catalyst for the adsorption and removal of NOx, and the NOx conversion could reach 99.1% at the temperature of 300 degrees C. The physico-chemical properties of FeCo/ASC and FeCo/N-ASC catalysts were characterized by Brunauer-Emmett-Teller measurements (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and in situ diffuse reflectance Fourier transform spectroscopy (DRIFTS). The BET and XPS spectra results revealed that the surface area and volume of micropores and nitrogen-containing functional groups, especially pyridinic nitrogen (N-6) and pyrrolic nitrogen (N-5), could be improved by nitrogen doping. Moreover, the valence state of the metal ions on the catalyst surface increased after N-doping. However, different nitrogen doping processes could lead to different crystalline structures and crystallinities, which could affect the rapid NOx adsorption and reduction performance of the catalysts at different temperatures. In the simulated rotary reactor, FeCo/N-ASC-3 showed better NO removal ability than other catalysts and exhibited high NOx reduction efficiency at the high temperature of 300 degrees C. Based on the catalytic activity of the proposed catalysts in the dynamic NOx adsorption-reduction process and results of the analysis of different surface characteristics of the catalysts, the possible deNO(x) mechanism of N-doped ASC catalysts was proposed.
机译：在此,nitrogen-doped活性半焦(ASC)支持铁cobalt-co-impregnated摘要催化剂/ N-ASC)准备和测试deNO (x)在模拟旋转反应堆。实验结果表明,所以/ N-ASC-3一个最佳的吸附和催化剂去除氮氧化物,氮氧化物转换在300摄氏度的温度达到99.1%。摘要/ ASC和的理化性能摘要/ N-ASC催化剂的特征Brunauer-Emmett-Teller测量(打赌),x射线衍射(XRD)、x射线光电子能谱(XPS)和原位分散反射率傅里叶变换光谱学(飘)。显示的表面积和体积微孔隙和氮含量的功能团体,尤其是pyridinic氮(N-6)和pyrrolic氮(存在),可以改善氮掺杂。金属离子在催化剂表面增加了N-doping之后。掺杂过程可能导致不同晶体结构和结晶度可能影响的快速氧化氮吸附和催化剂的还原性能不同的温度。反应堆,所以/ N-ASC-3显示更好的没有删除比其他催化剂表现出高的能力氮氧化物减排效率在高的温度300度c .基于催化活性提出的动态氮氧化物催化剂adsorption-reduction过程和结果分析不同表面特征的催化剂,可能deNO (x)的机理提出了n型ASC催化剂。

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