X型分子筛骨架29Si MAS NMR研究

波谱学杂志 ›› 1987, Vol. 4 ›› Issue (4): 311-316.

X型分子筛骨架²⁹Si MAS NMR研究

姚世杰, 胡皆汉, 郭和夫, 裘鉴卿

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

收稿日期:1987-02-17 修回日期:1987-03-21 出版日期:1987-12-05 发布日期:2018-01-22

THE STUDIES OF THE FRAMEWORK OF X-TYPE ZEOLITES BY ²⁹SiMASNMR

Yao Shijie, Hu Jiehah, Quo Hefu, Qiu Jianqing

Lab. of Magn. Reson. and Atomic and Mol. Phys., Wuhan Inst. of phys., Academia Sinica, Wuhan, P. R. China

Received:1987-02-17 Revised:1987-03-21 Online:1987-12-05 Published:2018-01-22

摘要/Abstract

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。

关键词: 骨架, 离子交换, 交换度, 水合态, 脱水态, 换位运动

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.

Key words: Framework, Ion exchange, Exchange level, Hydrated state, Dehydrated state, Site exchange motion

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.

Yao Shijie, Hu Jiehah, Quo Hefu, Qiu Jianqing. THE STUDIES OF THE FRAMEWORK OF X-TYPE ZEOLITES BY ²⁹SiMASNMR[J]. Chinese Journal of Magnetic Resonance, 1987, 4(4): 311-316.

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X型分子筛骨架²⁹Si MAS NMR研究

THE STUDIES OF THE FRAMEWORK OF X-TYPE ZEOLITES BY ²⁹SiMASNMR

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