【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组成 ,并用红外光谱对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 ,谱峰的位移与钠钾比不仅与金属离子本身性质有关 ,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样品上的空分性能与沸石中阳离子分布的关系更多还原

【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.更多还原