ZSM-5-250 Zeolite The ZSM-5 type zeolite produced by means of a template agent based hydrothermal crystallization method is featured with high relative crystallinity,wherein the relative crystallinity is no less than 80%,the SiO2/Al2O3 molar ratio is no less than 30,the Na2O is no more than 0.1%.and the average grain size is 300nm. ZSM-5-250 Quality Control Targets Item Unit Max Typical Max Analytical Method Relative crystallinity % 86 90 X-ray diffractometer Total specific surface m2/g 360 380 N2 Adsorption Microporous specific surface m2/g 280 320 N2 Adsorption Silica-alumina ratio / 250 230 250 XRF Na2O wt% 0.030 0.050 Flame Photometric Analysis SO42- wt% 0.25 0.4 XRF CI- ppm 70 Chemical Analysis LOI wt% 10 Gravimetric Analysis D,50 μm 4.0 5 Laser Scatter Distribution D,90 μm 7.0 8 Laser Scatter Distribution