N2O decomposition over K-promoted Co-Al catalysts prepared from hydrotalcite-like precursors
文献类型：期刊论文
| 作者 | Cheng, Hongkui1,2; Huang, Yanqiang1; Wang, Aiqin1; Li, Lin1; Wang, Xiaodong1; Zhang, Tao1 |
| 刊名 | applied catalysis b-environmental
 |
| 出版日期 | 2009-07-15 |
| 卷号 | 89期号:3-4页码:391-397 |
| 关键词 | N2O decomposition Alkali metal Potassium Hydrotalcite |
| 产权排序 | 1;1 |
| 通讯作者 | 张涛 |
| 英文摘要 | n2o decomposition was investigated over a series of k-promoted co-al catalysts. the activity tests showed that doping with k greatly enhanced the catalytic activity of the co-al catalyst, and the enhancement was critically dependent on the amount of k and the calcination temperature. when the catalyst had a k/co atomic ratio of 0.04 and was calcined at 700-800 degrees c, a full n2o conversion could be reached at a reaction temperature of 300 degrees c. moreover, even under the simultaneous presence of 4% o-2 and 2.6% water vapor, such high-temperature treated k/co-al catalyst exhibited high reactivity and stability, with the n2o conversion remaining at a constant value of 92% over 40 h run at 360 degrees c. in contrast, non-doped co-al catalyst showed a severe activity loss under such reaction conditions. a combination of characterization techniques was employed to reveal the promoting role of k and the effect of calcination temperature. the results suggest that doping with k increases the electron density of co and weakens the co-o bond, thus promoting the activation of n2o on the co sites and facilitating the desorption of oxygen from the catalyst surface. high-temperature calcinations made the desorption of o-2 proceed more readily. (c) 2008 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; engineering, environmental ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | nitrous-oxide ; superior performance ; co3o4 catalyst ; metal ; zeolites ; supports ; spinel ; oxygen ; gases ; mg |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000267203200011 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/102407]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Hongkui,Huang, Yanqiang,Wang, Aiqin,et al. N2O decomposition over K-promoted Co-Al catalysts prepared from hydrotalcite-like precursors[J]. applied catalysis b-environmental,2009,89(3-4):391-397. |
| APA | Cheng, Hongkui,Huang, Yanqiang,Wang, Aiqin,Li, Lin,Wang, Xiaodong,&Zhang, Tao.(2009).N2O decomposition over K-promoted Co-Al catalysts prepared from hydrotalcite-like precursors.applied catalysis b-environmental,89(3-4),391-397. |
| MLA | Cheng, Hongkui,et al."N2O decomposition over K-promoted Co-Al catalysts prepared from hydrotalcite-like precursors".applied catalysis b-environmental 89.3-4(2009):391-397. |
入库方式： OAI收割
来源：大连化学物理研究所
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