The promotional effect of NO on N2O decomposition over the bi-nuclear Fe sites in Fe/ZSM-5
文献类型：期刊论文
| 作者 | Xia, Haian; Sun, Keqiang; Liu, Zhimin; Feng, Zhaochi; Ying, Pinliang; Li, Can |
| 刊名 | journal of catalysis
 |
| 出版日期 | 2010-03-22 |
| 卷号 | 270期号:1页码:103-109 |
| 关键词 | Fe/ZSM-5 N2O decomposition Bi-nuclear Transient response Raman |
| 英文摘要 | combining transient response method, steady-state kinetics, in situ ir, and in situ raman spectroscopic techniques, the effect of no on n2o decomposition over fe/zsm-5 catalyst was investigated in detail, which reveals that the active sites are bi-nuclear fe sites. the presence of no increases the desorption rate of o-2 and lowers the apparent activation energy of n2o decomposition. trace amount of water vapor can lead to the deactivation of the fe/zsm-5 catalyst due to the oxidation of the active fe2+ sites during n2o decomposition. on the other hand, no treatment causes the regeneration of the inactive fe sites by releasing o-2 at relatively low temperature. for the first time, it was found that a raman band at 743 cm(-1), assigned to the bi-nuclear fe sites, changes accordingly with the deactivation and regeneration of the fe/zsm-5 catalyst. the in situ ir spectroscopic study reveals that no treatment of the deactivated catalyst can remove the hydroxyl groups bound to the inactive fe3+ species. these results demonstrate that h2o and no play important roles in the structural transformation between the hydroxylated bi-nuclear fe3+ sites and the dehydroxylated bi-nuclear fe2+ sites in fe/zsm-5. our conclusion is that the positive effect of no on n2o decomposition is due to the dehydroxylation of the hydroxylated bi-nuclear fe sites facilitated by no, as well as the enhancement of the o-2 desorption rate regulated by no. (c) 2009 elsevier inc. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | nitrous-oxide decomposition ; high-temperature treatment ; chemical-vapor-deposition ; selective catalytic-reduction ; resonance raman-spectroscopy ; over-exchanged fe/zsm5 ; iron-containing zsm-5 ; nitric-oxide ; mfi zeolites ; physicochemical characterization |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000275966100014 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141736]  |
| 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 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Haian,Sun, Keqiang,Liu, Zhimin,et al. The promotional effect of NO on N2O decomposition over the bi-nuclear Fe sites in Fe/ZSM-5[J]. journal of catalysis,2010,270(1):103-109. |
| APA | Xia, Haian,Sun, Keqiang,Liu, Zhimin,Feng, Zhaochi,Ying, Pinliang,&Li, Can.(2010).The promotional effect of NO on N2O decomposition over the bi-nuclear Fe sites in Fe/ZSM-5.journal of catalysis,270(1),103-109. |
| MLA | Xia, Haian,et al."The promotional effect of NO on N2O decomposition over the bi-nuclear Fe sites in Fe/ZSM-5".journal of catalysis 270.1(2010):103-109. |
入库方式： OAI收割
来源：大连化学物理研究所
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。