Dispersion of MgO on Pt/gamma-Al2O3 and the threshold effect in NOx storage
文献类型：期刊论文
| 作者 | Wang, Hui; Guan, Hongbo; Duan, Lianyun; Xie, Youchang |
| 刊名 | CATALYSIS COMMUNICATIONS
 |
| 出版日期 | 2006-10-01 |
| 卷号 | 7期号:10页码:802-806 |
| 关键词 | Monolayer Dispersion Nsr Catalysts Mgo/pt/gamma-al2o3 Threshold Effect |
| ISSN号 | 1566-7367 |
| DOI | 10.1016/j.catcom.2006.03.003 |
| 英文摘要 | Supported MgO/Pt/gamma-Al2O3 catalysts for NOx storage were prepared by impregnation method and characterized by XRD, BET, CO2-chemisorption, and XPS techniques. The results indicated that MgO was dispersed onto the surface of Pt/gamma-Al2O3, and the utmost dispersion capacity (i.e. threshold value) was 0.084g MgO/100 m(2) of Pt/gamma-Al2O3. NO, storage capacity of catalysts was measured. It increased with increasing MgO loading up to the dispersion threshold, and then decreased at higher MgO loadings. The 'threshold effect', a significant change in the catalytic behavior at the dispersion threshold, was found in this catalyst system. This effect indicated that the effective NOx storage component was not the crystalline MgO, but MgO monolayer dispersed on the surface of support. (c) 2006 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000241320000013 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/58413]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Duan, Lianyun |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Hui,Guan, Hongbo,Duan, Lianyun,et al. Dispersion of MgO on Pt/gamma-Al2O3 and the threshold effect in NOx storage[J]. CATALYSIS COMMUNICATIONS,2006,7(10):802-806. |
| APA | Wang, Hui,Guan, Hongbo,Duan, Lianyun,&Xie, Youchang.(2006).Dispersion of MgO on Pt/gamma-Al2O3 and the threshold effect in NOx storage.CATALYSIS COMMUNICATIONS,7(10),802-806. |
| MLA | Wang, Hui,et al."Dispersion of MgO on Pt/gamma-Al2O3 and the threshold effect in NOx storage".CATALYSIS COMMUNICATIONS 7.10(2006):802-806. |
入库方式： OAI收割
来源：化学研究所
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