Evolution of specific reaction pathways for the ammonia selective catalytic oxidation reaction over Cu-Ce/SSZ-13 catalysts: Effect of coupling of copper-cerium with zeolite
文献类型：期刊论文
| 作者 | Zhao, Yang2; Yi XK(衣晓坤)1,2; Dou, Baojuan2; Zhang CH(张晨航)1; Zhao, Zitong2; Bin F(宾峰)1
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| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2024-12-03 |
| 卷号 | 349页码:11 |
| 关键词 | Ammonia Selective catalytic oxidation Cu-Ce/SSZ-13 Reaction pathway Kinetic model |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2024.127727 |
| 通讯作者 | Dou, Baojuan(bjdou@tust.edu.cn) ; Bin, Feng(binfeng@imech.ac.cn) |
| 英文摘要 | The selective catalytic oxidation (SCO) has proved to be one of the most effective strategies for NH3 removal, and the corresponding reaction mechanism remains a key and challenging issue. This study provides the NH3-SCO reaction pathways at different reaction stages on Cu-Ce/SSZ-13 catalysts mainly based on kinetic experiments and quantitative analysis of active sites. Mars-van Krevelen (M-K) mechanism is determined to dominate the whole SCO reaction by the kinetic model. At low-temperature, the dehydrogenated NH3 (NHx) reacts with lattice oxygen first to generate the key imide -HNO (-NH pathway), whereas, NHx species tend to be coupled on the catalyst surface to form N2H4 (hydrazine pathway) with temperature rising. i-SCR reaction at high temperature reduces NOx production and improves nitrogen selectivity. Ce ions can promote the migration of Cu2+ in SSZ-13 skeleton from [Cu2+(OH)]+-Z in eight-membered rings to Cu2+-2Z in six-membered rings which facilitates the N2 selectivity at high temperature. |
| 分类号 | 一类 |
| WOS关键词 | SCR CATALYST ; SLIP AMMONIA ; CU-SSZ-13 ; REDUCTION ; NITROGEN ; REMOVAL ; SITES ; NH3-SCR ; OXIDE ; IONS |
| 资助项目 | National Natural Science Foundation of China[52176142] ; National Postdoctoral Program for Inno- vative Talents[BX20230380] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001262078200001 |
| 资助机构 | National Natural Science Foundation of China ; National Postdoctoral Program for Inno- vative Talents |
| 其他责任者 | Dou, Baojuan ; Bin, Feng |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/95918]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 2.Tianjin Univ Sci & Technol, Coll Marine & Environm Sci, Tianjin 300457, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhao, Yang,Yi XK,Dou, Baojuan,et al. Evolution of specific reaction pathways for the ammonia selective catalytic oxidation reaction over Cu-Ce/SSZ-13 catalysts: Effect of coupling of copper-cerium with zeolite[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2024,349:11. |
| APA | Zhao, Yang,衣晓坤,Dou, Baojuan,张晨航,Zhao, Zitong,&宾峰.(2024).Evolution of specific reaction pathways for the ammonia selective catalytic oxidation reaction over Cu-Ce/SSZ-13 catalysts: Effect of coupling of copper-cerium with zeolite.SEPARATION AND PURIFICATION TECHNOLOGY,349,11. |
| MLA | Zhao, Yang,et al."Evolution of specific reaction pathways for the ammonia selective catalytic oxidation reaction over Cu-Ce/SSZ-13 catalysts: Effect of coupling of copper-cerium with zeolite".SEPARATION AND PURIFICATION TECHNOLOGY 349(2024):11. |
入库方式： OAI收割
来源：力学研究所
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