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红外光谱法已用于沸石分子筛的结构及其表面性质的研究。Flanigen等详细研究了合成沸石的红外光谱,指出在1300-200cm~(-1)区合成沸石的红外光谱可归属两类振动:四面体内部振动和外部连结的振动。同时还阐明除了弯曲振动外,其余振动的吸收频率均与含铝克原子分数有线性关系,这就为红外光谱法测定沸石分子筛中硅铝比奠定了基础。表征四面体内部振动的谱带热稳定性好,在结晶形和无定形结构中均存在,特
Infrared spectroscopy has been used to study the structure and surface properties of zeolites. Flanigen et al. Studied the infrared spectra of the synthesized zeolites in detail. It was pointed out that the infrared spectra of the synthesized zeolites in the 1300-200cm ~ (-1) region belonged to two types of vibration: the vibration of tetrahedral internal and external links. At the same time, it is clarified that besides the flexural vibration, the absorption frequencies of the other vibrations have a linear relationship with the atomic fraction of aluminum containing grams of aluminum, which lays the foundation for the determination of Si / Al ratio in zeolite molecular sieve by infrared spectroscopy. The band that characterizes the internal vibration of the tetrahedron has good thermal stability and exists both in crystalline and amorphous structures.