Abstract: The high resolution solid-state NMR is able to determine the framework Si/Al ratio and to analyze the statistical distribution characters of Si,Al atom in the framework of zeolite samples.Based on characterizations of the chemical shift and quadrupole interaction the various aluminum species presented in zeolites can be identified or classified.The microscopic information is helpful to the understanding of acidity mechanisms and provides important basis for researches of the synthesis and the modification of zeolites.

Key words: High resolution solid-state NMR, Zeolite, Molecular sieve