Selective catalytic oxidation of ammonia over LaMAl11O19-delta (M = Fe, Cu, Co, and Mn) hexaaluminates catalysts at high temperatures in the Claus process
文献类型：期刊论文
| 作者 | Jiang, Guoxia; Zhang, Fenglian; Wei, Zheng; Wang, Zhuo; Sun, Yu; Zhang, Yumeng; Lin, Caihong; Zhang, Xin ; Hao, Zhengping
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| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
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| 出版日期 | 2020-03-07 |
| 卷号 | 10期号:5页码:1477-1491 |
| ISSN号 | 2044-4753 |
| 英文摘要 | A method for the selective catalytic oxidation of ammonia at high temperature was innovatively proposed to substitute the traditional combustion method to remove the ammonia impurity in the Claus process. In the present work, transition metal (Fe, Cu Co, and Mn)-substituted La-hexaaluminate catalysts were synthesized and investigated for the selective catalytic oxidation of ammonia (NH3-SCO) at high temperature. It was observed that Cu-substituted catalysts could achieve the highest N-2 yield at around 520 degrees C. It was confirmed that the conversion of NH3 was closely related to the reducibility of the prepared catalyst. In particular, it was observed that the molecular O-2 could not be dissociatively adsorbed on the prepared catalyst surface. However, both lattice oxygen and gas-phase O-2 could participate in NH3-SCO, with gas-phase O-2 being the most favorable under the experimental conditions. It was evidenced that the NH3-SCO reaction over the prepared catalysts followed the i-SCR mechanism. Moreover, monodentate nitrates were the main reactive intermediates toward forming N-2. Therefore, the development of high-temperature SCO technology and an efficient catalyst are beneficial for the sustainable development of the chemical industry. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44885]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Jiang, Guoxia,Zhang, Fenglian,Wei, Zheng,et al. Selective catalytic oxidation of ammonia over LaMAl11O19-delta (M = Fe, Cu, Co, and Mn) hexaaluminates catalysts at high temperatures in the Claus process[J]. CATALYSIS SCIENCE & TECHNOLOGY,2020,10(5):1477-1491. |
| APA | Jiang, Guoxia.,Zhang, Fenglian.,Wei, Zheng.,Wang, Zhuo.,Sun, Yu.,...&Hao, Zhengping.(2020).Selective catalytic oxidation of ammonia over LaMAl11O19-delta (M = Fe, Cu, Co, and Mn) hexaaluminates catalysts at high temperatures in the Claus process.CATALYSIS SCIENCE & TECHNOLOGY,10(5),1477-1491. |
| MLA | Jiang, Guoxia,et al."Selective catalytic oxidation of ammonia over LaMAl11O19-delta (M = Fe, Cu, Co, and Mn) hexaaluminates catalysts at high temperatures in the Claus process".CATALYSIS SCIENCE & TECHNOLOGY 10.5(2020):1477-1491. |
入库方式： OAI收割
来源：生态环境研究中心
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