Nanosize Effect of Al2O3 in Ag/Al2O3 Catalyst for the Selective Catalytic Oxidation of Ammonia
文献类型：期刊论文
| 作者 | Wang, Fei ; Ma, Jinzhu; He, Guangzhi; Chen, Min; Zhang, Changbin; He, Hong
|
| 刊名 | ACS CATALYSIS
 |
| 出版日期 | 2018-04-01 |
| 卷号 | 8期号:4页码:2670-2682 |
| 关键词 | ammonia (NH3) Ag/Al2O3 low-temperature oxidation reaction pathway N-2(-) mechanism |
| ISSN号 | 2155-5435 |
| 文献子类 | Article |
| 英文摘要 | Ammonia (NH3) has potentially harmful effects on human health and has recently been found to be an important factor in the formation of haze; thus, its emission control is urgent, especially during haze pollution periods. In this work, two kinds of Ag/Al2O3 catalysts with different Al2O3 particle sizes (micro-Al2O3 and nano-Al2O3) were prepared and tested for the selective catalytic oxidation of ammonia (NH3-SCO). It was shown that Ag/nano-Al2O3 was much more active than Ag/micro-Al2O3 for NH3-SCO in the low-temperature range. The results of characterization by BET, TEM, NH3-TPD, XRD, H-2-TPR, UV vis, and XAFS revealed that Ag/nano-Al2O3 possesses much smaller Ag particles and more metallic Ag species (Ag-NPs,) and also contains abundant acid sites, which facilitate the adsorption and dissociation of NH3, therefore resulting in much higher NH3-SCO activity. In addition, on the basis of in situ DRIFTS, kinetic measurements, and DFT calculation results, we discovered that the NH3-SCO reaction over Ag/nano-Al2O3 follows a reaction pathway we call the N-2(-) mechanism. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40821]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 推荐引用方式 GB/T 7714 | Wang, Fei,Ma, Jinzhu,He, Guangzhi,et al. Nanosize Effect of Al2O3 in Ag/Al2O3 Catalyst for the Selective Catalytic Oxidation of Ammonia[J]. ACS CATALYSIS,2018,8(4):2670-2682. |
| APA | Wang, Fei,Ma, Jinzhu,He, Guangzhi,Chen, Min,Zhang, Changbin,&He, Hong.(2018).Nanosize Effect of Al2O3 in Ag/Al2O3 Catalyst for the Selective Catalytic Oxidation of Ammonia.ACS CATALYSIS,8(4),2670-2682. |
| MLA | Wang, Fei,et al."Nanosize Effect of Al2O3 in Ag/Al2O3 Catalyst for the Selective Catalytic Oxidation of Ammonia".ACS CATALYSIS 8.4(2018):2670-2682. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。