| Li-LSX沸石中阳离子分布与空分性能的研究 |
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| 引用本文： | 崔邑诚,张爱民,董家騄,须沁华. Li-LSX沸石中阳离子分布与空分性能的研究[J]. 化学学报, 2003, 61(3): 350-353 |
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| 作者姓名： | 崔邑诚 张爱民 董家騄 须沁华 |
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| 作者单位： | 南京大学化学化工学院,南京,210093 |
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| 摘 要： | 利用静态交换与动态柱交换的方法对低硅KNaX沸石进行Li~+交换．用XRD， ICP测定样品的晶相及化学红外光谱对LSX在Li~+交换中的骨架振动进行了研究．结 果表明：在Li~+交换过程中，谱峰的位移与本身性质有关，而且与LSX骨架中的离 子位置有关．还探讨了在高交换度的Li-LSX样品上的空分性能布的关系．
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| 关 键 词： | 沸石 锂离子 离子交换 X射线衍射分析 电感耦合等离子体 |
| 修稿时间： | 2002-06-24 |
Distribution of Cations in the Zeolite Frameworks and the Air Separation Ability of Li-LSX |
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| Affiliation: | Department of Chemistry,Nanjing University |
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| Abstract: | Low-silica KNaX-zeolite (LSX) was exchanged with Li + by static method and dynamic method. The zeolite crystal structure and the composition of samples were characterized by XRD and ICP, respectively. The framework vibrations of the LSX in the Li + exchange process were investigated by infrared spectra. It was found that the ratio of sodium to potassium and the vibration peak location were changed during the Li + exchange process. The phenomena were related to character and location of the metal ions in the frameworks of Li-LSX. The reason of increase of air separation ability for high exchange degree samples was discussed. |
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| Keywords: | Li-LSX framework vibration air separation |
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