| 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 | |
Zhao, Yang1; Yi XK(衣晓坤)1,2; Dou, Baojuan1; Zhang CH(张晨航)2; Zhao, Zitong1; Bin F(宾峰)2
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| Corresponding Author | Dou, Baojuan([email protected]) ; Bin, Feng([email protected]) |
| Source Publication | SEPARATION AND PURIFICATION TECHNOLOGY
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| 2024-12-03 | |
| Volume | 349Pages:11 |
| ISSN | 1383-5866 |
| Abstract | 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. |
| Keyword | Ammonia Selective catalytic oxidation Cu-Ce/SSZ-13 Reaction pathway Kinetic model |
| DOI | 10.1016/j.seppur.2024.127727 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001262078200001 |
| WOS Keyword | SCR CATALYST ; SLIP AMMONIA ; CU-SSZ-13 ; REDUCTION ; NITROGEN ; REMOVAL ; SITES ; NH3-SCR ; OXIDE ; IONS |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Project | National Natural Science Foundation of China[52176142] ; National Postdoctoral Program for Inno- vative Talents[BX20230380] |
| Funding Organization | National Natural Science Foundation of China ; National Postdoctoral Program for Inno- vative Talents |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Dou, Baojuan ; Bin, Feng |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95919 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Tianjin Univ Sci & Technol, Coll Marine & Environm Sci, Tianjin 300457, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| Recommended Citation 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.Rp_Au:Dou, Baojuan, Bin, Feng |
| 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. |
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