Structure characterization of gamma-Mo2N and Mo nitrides supported on zeolites
文献类型：期刊论文
| 作者 | Liu, ZL; Meng, M ; Fu, YL; Jiang, M; Hu, TD; Xie, YN; Liu, T; Hu TD(胡天斗); Xie YN(谢亚宁); Liu T(刘涛)
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| 刊名 | ACTA PHYSICO-CHIMICA SINICA
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| 出版日期 | 2001 |
| 卷号 | 17期号:7页码:631-635 |
| 关键词 | zeolite supports molybdenum nitride catalysts EXAFS structure |
| 其他题名 | r-Mo2N和分子筛负载的钼氮化物的结构表征 |
| 通讯作者 | Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China |
| 英文摘要 | Zeolites supported Mo nitrides were prepared via MoO3 + NH3 reaction in temperature programmed mannar. The XRD data show that the frame structure of NaY and Na-ZSM-5 zeolites can still be maintained after nitridation at 973K. By analysis of the extended X-ray absorption fine structure (EXAFS) of the Mo K-absorption edge, the structural informations of both oxidic and nitrided Mo catalysts were obtained. The supported MoO3 samples show three peaks in the radial structure function (RSF). The first two peaks correspond to the nearest Mo - O coordination shell, but the ratio of the first peak to the second one is much larger than that of the MoO3. This suggests that the MoO3 supported on zeolites has more compact structure than the unsupported one. There are three peaks in the RSF Of Mo2N, representing one Mo - N and two Mo - Mo shells, which is in good agreement with the face-centered cubic model. Calculation from X-ray diffraction data and EXAFS spectra reveals that the N atoms in Mo2N lengthen the distance between Mo atoms and weaken the Mo - Mo bond. Supported Mo2N samples give out nearly the same RSFs as the Mo2N, only the peak corresponding to Mo - N shell is weak, suggesting that the supported Mo2N has more structural disorder than the unsupported one. Mo2N supported on Na-ZSM-5 gives out shorter coordination distance than supported on NaY, suggesting stronger interaction between Mo2N and Na-ZSM-5. |
| 学科主题 | Chemistry |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000170070000012 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/238152]  |
| 专题 | 中国科学院高能物理研究所_中国散裂中子源 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, ZL,Meng, M,Fu, YL,et al. Structure characterization of gamma-Mo2N and Mo nitrides supported on zeolites[J]. ACTA PHYSICO-CHIMICA SINICA,2001,17(7):631-635. |
| APA | Liu, ZL.,Meng, M.,Fu, YL.,Jiang, M.,Hu, TD.,...&刘涛.(2001).Structure characterization of gamma-Mo2N and Mo nitrides supported on zeolites.ACTA PHYSICO-CHIMICA SINICA,17(7),631-635. |
| MLA | Liu, ZL,et al."Structure characterization of gamma-Mo2N and Mo nitrides supported on zeolites".ACTA PHYSICO-CHIMICA SINICA 17.7(2001):631-635. |
入库方式： OAI收割
来源：高能物理研究所
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