Role of the support on the behavior of Ag-based catalysts for NH3 selective catalytic oxidation (NH3-SCO)
文献类型：期刊论文
| 作者 | Qu, Zhenping1; Wang, Hui1; Wang, Shudong2; Cheng, Hao2; Qin, Yuan1; Wang, Zhong1 |
| 刊名 | applied surface science
 |
| 出版日期 | 2014-10-15 |
| 卷号 | 316页码:373-379 |
| 关键词 | NH3-SCO UV-vis Silver species Support N-2/N2O formation |
| 英文摘要 | in this work four supports with different textural properties (al2o3, sio2, nay and tio2) are used to evaluate the formation of different silver species and their effect on the nh3-sco performance. characterization analyses have shown that the predominant ag-0 species and the oxidized ag species ag+ and ag-n(delta+)) are located on the four catalysts with different ratio of ag-0/oxidized ag. small ag-0 particle with high dispersion which is obtained on 10 wt% ag/al2o3 (5 nm, ag-0 ratio = 97.7%) shows an excellent catalytic performance for sco reaction at low temperatures a complete nh3 conversion at 180 degrees c and a high n-2 selectivity of 89%). in addition, a certain amount of oxidized ag species formed on the catalysts, especially for the nay and sio2 support, as well as the surface acidity of catalysts have also been found to play an important role in the enhanced n-2 selectivity above 140 degrees c by promoting iscr reaction involving no as an intermediate for n-2 formation. a model to relate the silver species with the performance of nh3-sco is proposed, which is very significant for the further optimization of the catalyst (e.g. choosing a suitable support) for nh3-sco reaction and its practical application in the future. (c) 2014 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; materials science, coatings & films ; physics, applied ; physics, condensed matter |
| 研究领域[WOS] | chemistry ; materials science ; physics |
| 关键词[WOS] | silver-based catalysts ; ag/ceo2 catalysts ; co oxidation ; reduction ; no ; ag/al2o3 ; ammonia ; temperature ; nitrogen ; scr |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000343329100052 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145897]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China 2.Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Zhenping,Wang, Hui,Wang, Shudong,et al. Role of the support on the behavior of Ag-based catalysts for NH3 selective catalytic oxidation (NH3-SCO)[J]. applied surface science,2014,316:373-379. |
| APA | Qu, Zhenping,Wang, Hui,Wang, Shudong,Cheng, Hao,Qin, Yuan,&Wang, Zhong.(2014).Role of the support on the behavior of Ag-based catalysts for NH3 selective catalytic oxidation (NH3-SCO).applied surface science,316,373-379. |
| MLA | Qu, Zhenping,et al."Role of the support on the behavior of Ag-based catalysts for NH3 selective catalytic oxidation (NH3-SCO)".applied surface science 316(2014):373-379. |
入库方式： OAI收割
来源：大连化学物理研究所
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