| CrOx-CeO2二元氧化物表面NO的NH3催化还原反应机理 |
| Reaction Mechanism of NH3-Selective Catalytic Reduction for NO on CrOx-CeO2 Binary Oxide |
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| 摘要: 利用原位漫反射红外光谱法研究了473K下在CrOx-CeO2二元氧化物表面NO的NH3催化还原反应的机理。研究了CrOx-CeO2二元氧化物表面在反应过程中的表面吸附物种。为了更加清晰的了解反应过程,在SCR反应过程中分别切断NH3和NO的气流,并采集了所生成的原位漫反射红外光谱图,通过研究以上结果得出结论:当前状态下的SCR反应过程可能服从E-R机理。 |
| 关键词: Cr2O3 CeO2 SCR NOx 原位红外 |
| 基金项目: 中国科学院知识创新工程重要方向项目(No.KZCX2-EW-403);国家自然科学基金(No.21107111)资助项目。 |
| Abstract: In-situ Diffuse Reflectance Infrared Fourier Transform (In-situ DRIFT) Spectroscopy was employed to investigate the reaction mechanism of NH3-Selective Catalytic Reduction (SCR) upon NOon CrOx-CeO2 binary oxide at 473 K. The surface adsorbed species on the CrOx-CeO2 binary oxide during the SCR reaction were analyzed. To elucidate the reaction process more precisely, we cut off the NH3 and NO flow, respectively, in the SCR reaction and collected the resulting in-situ DRIFT spectra. The results indicate that the SCR reaction process might follow the Eley-Rideal (E-R) mechanism. |
| Keywords: Cr2O3 CeO2 SCR NOx In-situ DRIFT |
| 投稿时间：2013-03-26 修订日期：2013-05-27 |
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| 刘海弟,李伟曼,黄亿苹,陈运法.CrOx-CeO2二元氧化物表面NO的NH3催化还原反应机理[J].无机化学学报,2013,29(11):2399-2404. |
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