| X型分子筛骨架29Si MAS NMR研究 |
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| 引用本文： | 姚世杰,胡皆汉,郭和夫,裘鉴卿.X型分子筛骨架29Si MAS NMR研究[J].波谱学杂志,1987,4(4):311-316. |
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| 作者姓名： | 姚世杰 胡皆汉 郭和夫 裘鉴卿 |
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| 作者单位： | 中国科学院武汉物理研究所波谱与原子分子物理开放研究实验室 武汉 |
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| 摘 要： | 本文利用固体NMR方法考察了Cd2+交换的X型分子筛骨架29Si核素的核磁行为,讨论了离子交换度、脱水作用等因素对29SiMASNMR谱的影响,发现交换度为85%的CdNaX分子筛具有独特的行为,可能是特殊催化性质的反映。同时还分析了不同类型的交换离子(Cd2+、Co2+、Mn2+、Cu2+、和Pb2+、等)对29SiMASNMR谱的影响。
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| 关 键 词： | 骨架 离子交换 交换度 水合态 脱水态 换位运动 |
| 收稿时间： | 1987-02-17 |
THE STUDIES OF THE FRAMEWORK OF X-TYPE ZEOLITES BY ~(29)SiMASNMR |
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| Yao Shijie Hu Jiehah Quo Hefu and Qiu Jianqing.THE STUDIES OF THE FRAMEWORK OF X-TYPE ZEOLITES BY ~(29)SiMASNMR[J].Chinese Journal of Magnetic Resonance,1987,4(4):311-316. |
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| Authors: | Yao Shijie Hu Jiehah Quo Hefu and Qiu Jianqing |
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| Institution: | Lab. of Magn. Reson. and Atomic and Mol. Phys., Wuhan Inst. of phys., Academia Sinica, Wuhan, P. R. China |
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| Abstract: | The 29Si NMR behaviour of the framework in divalent metal ion exchanged X-type zeolites was investigated, and the effects of exchange level, dehydration and the type of exchange ions(e.g.Cd2 + ,Cu2 + ,Co2 + ,Mn2+,Pb2+)on the 29SiMASNMR spectra were discussed. It was found that at the exchange level of about 85%, the zeolite remained in a special state which might be related to a special catalytic activity at this ion exchange level. |
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| Keywords: | Framework Ion exchange Exchange level Hydrated state Dehydrated state Site exchange motion |
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