Mechanism of selective catalytic oxidation of ammonia to nitrogen over Ag/Al2O3
文献类型：期刊论文
| 作者 | Zhang, Li; He, Hong |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2009-11-15 |
| 卷号 | 268期号:1页码:18-25 |
| 关键词 | Selective catalytic oxidation NH3 Ag/Al2O3 Mechanism O-2 uptake In situ DRIFTS |
| 中文摘要 | The mechanism of selective catalytic oxidation (SCO) of NH3 over Ag/Al2O3 was studied by NH3 temperature-programed oxidation, O-2-pulse adsorption, and in situ DRIFTS of NH3 adsorption and oxidation. The essence which affects the low temperature activity of Ag/Al2O3 has been elucidated through the mechanism study. Different Ag species on Ag/Al2O3 Significantly influence O-2 uptake by catalysts; while different oxygen species affect the activity of NH3 Oxidation at low temperature. The activated -NH could react with the atomic oxygen (O) at low temperatures (<140 degrees C) however, the -NH could also interact with the O-2 at temperatures above 140 degrees C. At low temperatures (<140 degrees C), NH3 oxidation follows the -NH mechanism. However, at temperatures above 140 degrees C, NH3 oxidation follows an in situ selective catalytic reduction (iSCR) mechanism (two-step formation of N-2 via the reduction of an in situ-produced NOx species by a NHx species). (C) 2009 Elsevier Inc. All rights reserved. |
| WOS记录号 | WOS:000272349000003 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21533]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Li,He, Hong. Mechanism of selective catalytic oxidation of ammonia to nitrogen over Ag/Al2O3[J]. JOURNAL OF CATALYSIS,2009,268(1):18-25. |
| APA | Zhang, Li,&He, Hong.(2009).Mechanism of selective catalytic oxidation of ammonia to nitrogen over Ag/Al2O3.JOURNAL OF CATALYSIS,268(1),18-25. |
| MLA | Zhang, Li,et al."Mechanism of selective catalytic oxidation of ammonia to nitrogen over Ag/Al2O3".JOURNAL OF CATALYSIS 268.1(2009):18-25. |
入库方式： OAI收割
来源：生态环境研究中心
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