A multinuclear solid state NMR study on dealumination of mordenite by steaming and acid-leaching
文献类型：期刊论文
| 作者 | Zhang, MJ; Chen, L; Yi, DL; Zheng, AM; Yang, J; Deng, F; Yue, Y; Ye, CH |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2004-08-01 |
| 卷号 | 25期号:8页码:1490-1494 |
| 关键词 | H-1 Si-29 Al-27 MAS NMR H-1/Si-29 CP steaming /acid-leaching dealumination nonframe-work four-coordinated Al dealumination mechanism |
| 英文摘要 | The steamed and acid-leached mordenite samples were examined by high-resolution solid state H-1, Si-29, Al-17 magic angle spinning (MAS) and (HP)-H-1/Si-29 cross polarization (CP) NMR spectroscopic techniques in order to study the aluminum species and evaluate the dealumination process during steaming and leaching. The NMR experiments provide a direct evidence for the existence of nonframework four-coordinated Al species, Al(OH)(3) (.) H2O, giving rise to a H-1 resonance at delta 3.0 and a Al-27 shoulder peak at delta 45, which are different from the distorted four-coordinated Al species. At a high temperature, water molecules will favor the formation of these Al species and extra-framework penta- and hexa-coordinated Al species in the Al-27 spectrum at delta 30 and delta 0. respectively. H-1/Si-29 CP and H-1 MAS NMR showed the presence of an abundance of SiOH and AlOH groups in the dealuminated mordenites during the steaming process. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | ZEOLITE-BETA ; ALUMINUM ; CALCINATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000223524600029 |
| 公开日期 | 2015-07-28 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/4371]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Wuhan Univ Sci & Technol, Dept Chem, Wuhan 430081, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, MJ,Chen, L,Yi, DL,et al. A multinuclear solid state NMR study on dealumination of mordenite by steaming and acid-leaching[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2004,25(8):1490-1494. |
| APA | Zhang, MJ.,Chen, L.,Yi, DL.,Zheng, AM.,Yang, J.,...&Ye, CH.(2004).A multinuclear solid state NMR study on dealumination of mordenite by steaming and acid-leaching.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,25(8),1490-1494. |
| MLA | Zhang, MJ,et al."A multinuclear solid state NMR study on dealumination of mordenite by steaming and acid-leaching".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 25.8(2004):1490-1494. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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