SiO₂/Al₂O₃ Ratio of ZSM-5 Zeolite Determined by X-Ray Diffraction Analysis

ZSM-5 Zeolite was examined with a Japan diffractomcter (D max-RB X-Ray Diffractometer). The data obtained were boied by means of the least square method to give the Cell volume of the zeolite. According to an empirical formula correlating the Cell volume with the SiO₂/Al₂O₃ ratio, the latter can be easily obtained. This method is simpler and convenient and itS repeatabillty is better than common chemical analysis.