Ceria-tungsten-tin oxide catalysts with superior regeneration capacity after sulfur poisoning for NH3-SCR process
文献类型：期刊论文
| 作者 | Liu, Jingjing ; Shi, Xiaoyan; Lv, Zhihui; Yu, Yunbo; He, Hong
|
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-04-19 |
| 卷号 | 12期号:8页码:2471-2481 |
| 关键词 | LOW-TEMPERATURE NH3-SCR NO OXIDATION CALCINATION TEMPERATURE THERMAL-DECOMPOSITION SO2 TOLERANCE ACTIVE-SITES REDUCTION SCR RESISTANCE NH3 |
| ISSN号 | 2044-4753 |
| 英文摘要 | Nowadays, there exists a trade-off between high-temperature thermal stability and low-temperature catalytic activity for metal oxide catalysts for the NH3-SCR reaction, which restricts the practical application of metal oxide catalysts on diesel vehicles for NOx emission control. In this work, we systematically investigated the relationship between catalytic performance and thermal durability over a novel Ce-W-Sn ternary oxide (CeWSnOx) catalyst by varying the calcination temperature over the range 500-900 degrees C. Instead of thermal deactivation, the NH3-SCR performance of the CeWSnOx catalyst was significantly improved by roasting treatment at temperatures as high as 800 degrees C. Additionally, in situ SO2 poisoning led to the loss of the low-temperature activity for the optimized CeWSnOx-800 catalyst. The superior thermal stability of the CeWSnOx-800 catalyst and the poor thermal stability of the formed sulfates, however, made full thermal regeneration of the sulfur-poisoned catalyst feasible below 700 degrees C. The anti-sintering characteristics, SO2 poisoning mechanism and thermal regeneration capacity after SO2 poisoning of the CeWSnOx-800 catalyst were explored in detail by different characterization methods. We expect that this study can shed some light on the development of Ce-based catalysts for NOx removal from diesel exhaust possessing high thermal stability, catalytic activity and SO2 tolerance. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47390]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 通讯作者 | He, Hong |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jingjing,Shi, Xiaoyan,Lv, Zhihui,et al. Ceria-tungsten-tin oxide catalysts with superior regeneration capacity after sulfur poisoning for NH3-SCR process[J]. CATALYSIS SCIENCE & TECHNOLOGY,2022,12(8):2471-2481. |
| APA | Liu, Jingjing,Shi, Xiaoyan,Lv, Zhihui,Yu, Yunbo,&He, Hong.(2022).Ceria-tungsten-tin oxide catalysts with superior regeneration capacity after sulfur poisoning for NH3-SCR process.CATALYSIS SCIENCE & TECHNOLOGY,12(8),2471-2481. |
| MLA | Liu, Jingjing,et al."Ceria-tungsten-tin oxide catalysts with superior regeneration capacity after sulfur poisoning for NH3-SCR process".CATALYSIS SCIENCE & TECHNOLOGY 12.8(2022):2471-2481. |
入库方式： OAI收割
来源：生态环境研究中心
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