Selective catalytic reduction of NOx with NH3 over short-range ordered W-O-Fe structures with high thermal stability
文献类型：期刊论文
| 作者 | Zeng, YW; Zheng LR(郑黎荣) ; Zhang, ZL; Cao, XM; Zheng, LR; erson, JA; Xin, Y; Zhang, NN; Li, Q
|
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2018 |
| 卷号 | 229页码:81-87 |
| 关键词 | Nitrogen oxides Selective catalytic reduction Ammonia Short-range order High thermal stability |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2018.02.012 |
| 文献子类 | Article |
| 英文摘要 | The selective catalytic reduction (SCR) of NOx with NH3 was studied over poorly-crystalline W-Fe composite oxides (WaFeOx). The short-range order present within the W-O-Fe structure was found to be responsible for the excellent SCR activity, in which the strong atomic-level interaction between Fe and W atoms promoted the formation of both Lewis and Bronsted acidity. The W-O-Fe structure existed as amorphous overlayers, approximately 2 nm thick over the surface of crystalline particles after high-temperature aging as shown by high-angle annular dark field scanning transmission electron microscopy (lAADF-STEM). After treatment at 800 degrees C for 5 h, the WaFeOx catalysts still showed almost 100% NO conversion in the range 300-450 degrees C with 100% N-2 selectivity, despite the loss in surface area. This resistance to the impacts of high temperature ageing guarantees high activity of SCR catalysts which often suffer during high-temperature excursions as in the case of diesel exhaust due to diesel particulate filter (DPF) regeneration. |
| 电子版国际标准刊号 | 1873-3883 |
| WOS关键词 | IRON TITANATE CATALYST ; TI AMORPHOUS OXIDES ; IN-SITU IR ; NITRIC-OXIDE ; TEMPERATURE-RANGE ; CE/TIO2 CATALYST ; ACTIVE-SITES ; MIXED OXIDES ; THE-ART ; AMMONIA |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000428488600010 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285771]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zeng, YW,Zheng LR,Zhang, ZL,et al. Selective catalytic reduction of NOx with NH3 over short-range ordered W-O-Fe structures with high thermal stability[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,229:81-87. |
| APA | Zeng, YW.,郑黎荣.,Zhang, ZL.,Cao, XM.,Zheng, LR.,...&Li, Q.(2018).Selective catalytic reduction of NOx with NH3 over short-range ordered W-O-Fe structures with high thermal stability.APPLIED CATALYSIS B-ENVIRONMENTAL,229,81-87. |
| MLA | Zeng, YW,et al."Selective catalytic reduction of NOx with NH3 over short-range ordered W-O-Fe structures with high thermal stability".APPLIED CATALYSIS B-ENVIRONMENTAL 229(2018):81-87. |
入库方式： OAI收割
来源：高能物理研究所
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