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用高分辨~(29)Si、~(27)Al和~(23)Na NMR对直接法合成的不同硅铝比ZSM-5型分子筛局域结构作了表征,用~(29)Si和~(27)Al魔角旋转核磁共振研究了经不同温度水蒸气处理ZSM-5型分子筛的骨架脱铝,对不同条件下ZSM-5型分子筛中发生的正交-单斜晶型变化进行了系统的X射线衍射实验研究。
The local structures of ZSM-5 zeolites synthesized by direct method were characterized by ~ (29) Si, ~ (27) Al and ~ (23) Na NMR using ~ (29) Si and ~ (27) Al-magic angle spin nuclear magnetic resonance Study on dealumination of ZSM-5 molecular sieve by different temperature steam treatment, the orthorhombic-monoclinic changes in ZSM-5 molecular sieve under different conditions were systematically studied X-ray diffraction experimental study.