Characterization of the NO-soot combustion process over La0.8Ce0.2Mn0.7Bi0.3O3 catalyst
文献类型：期刊论文
| 作者 | Bin F(宾峰) ; Song CL; Lv G; Li XD; Cao XF; Song JO; Wu SH
|
| 刊名 | Proceedings of The Combustion Institute
 |
| 出版日期 | 2015 |
| 卷号 | 35期号:2页码:2241-2248 |
| 通讯作者邮箱 | songchonglin@tju.edu.cn |
| 关键词 | Soot Nitrous oxide Catalytic combustion Perovskite catalyst |
| ISSN号 | 1540-7489 |
| 产权排序 | [Bin, Feng; Song, Chonglin; Lv, Gang; Li, Xiaodong; Cao, Xiaofeng; Song, Jinou; Wu, Shaohua] Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China; [Bin, Feng; Cao, Xiaofeng] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 通讯作者 | Song, CL (reprint author), Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China. |
| 合作状况 | 国内 |
| 中文摘要 | The combustion of diesel soot in NO + O-2/He atmospheres was investigated by temperature-programmed oxidation (TPO), X-ray photoelectron spectroscopy (XPS), and in-situ diffuse reflectance Fourier transform (DRIFT) technology, with the aim to demonstrate the participation of nitric oxide species and surface carbon-oxygenated complexes in the process. According to the TPO results, two main adsorption periods for nitric oxide species were observed: one was from 50 to about 180 degrees C and the other occurred in the temperature range of 180-400 degrees C. The DRIFT results indicated that the first adsorption period was mainly associated with weakly adsorbed NO, bidentate nitrite and unidentate nitrate, monodentate nitrate, chelating nitrate and bridging nitrate, while the second uptake was related to nitrite and free nitrate species. Based on the XPS and DRIFT results, possible reaction processes for the NOx-soot combustion are proposed based on the Langmuir-Hinshelwood mechanism. First, the carbon-oxygenated groups, including carboxyls, lactones, and anhydrides were formed at free carbon sites by the oxidation of dissociative nitrates. Such moieties were so stable that they could not be further oxidized, even at 400 degrees C, without the presence of a catalyst. Second, the adsorption of NO + O-2 resulted in the formation of nitrates on the MnOx surface of the catalyst. Then, the surface-activated nitrates, with activity decreasing in the order: chelating nitrates > bridging nitrates > monodentate nitrates > free ionic nitrates, further oxidized these carbon-oxygenated complexes with subsequent release of CO2, NO and N-2. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved. |
| 学科主题 | Thermodynamics ; Energy & Fuels ; Engineering |
| 分类号 | 一类 |
| 类目[WOS] | Thermodynamics ; Energy & Fuels ; Engineering, Chemical ; Engineering, Mechanical |
| 研究领域[WOS] | Thermodynamics ; Energy & Fuels ; Engineering |
| 关键词[WOS] | DIESEL SOOT ; SURFACE-CHEMISTRY ; MIXED OXIDES ; OXIDATION ; TEMPERATURE ; COMPLEX ; NH3 |
| 收录类别 | SCI ; EI |
| 资助信息 | This study was supported by the National Key Basic Research and Development Program (2013CB228506) and the National Natural Science Foundation of China (No. 51206119). |
| 原文出处 | http://dx.doi.org/10.1016/j.proci.2014.08.028 |
| 语种 | 英语 |
| WOS记录号 | WOS:000348048800127 |
| 公开日期 | 2015-03-17 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49590]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Bin F,Song CL,Lv G,et al. Characterization of the NO-soot combustion process over La0.8Ce0.2Mn0.7Bi0.3O3 catalyst[J]. Proceedings of The Combustion Institute,2015,35(2):2241-2248. |
| APA | Bin F.,Song CL.,Lv G.,Li XD.,Cao XF.,...&Wu SH.(2015).Characterization of the NO-soot combustion process over La0.8Ce0.2Mn0.7Bi0.3O3 catalyst.Proceedings of The Combustion Institute,35(2),2241-2248. |
| MLA | Bin F,et al."Characterization of the NO-soot combustion process over La0.8Ce0.2Mn0.7Bi0.3O3 catalyst".Proceedings of The Combustion Institute 35.2(2015):2241-2248. |
入库方式： OAI收割
来源：力学研究所
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。