Low-sodium ultra-stable high-silicon Y molecular sieve DAY-12
Na2O is more than 0.1% and SiO2/Al2O3 molar ratio is no less than 10.
DAY-12 Quality Control Targets
| Item | Unit | Max | Typical | Max | Analytical Method |
| Relative crystallinity | % | 70 | 75 | X-ray diffractometer | |
| Cell parameter | ×10-10m | 24.42 | 24.46 | 24.48 | X-ray diffractometer |
| Silica-alumina ratio | / | 10 | 10.5 | 13 | X-ray diffractometer |
| Total specific surface | m2/g | 680 | 700 | N2 Adsorption | |
| Na2O | wt % | 0.1 | N2 Adsorption | ||
| SO42- | wt % | 0.2 | 0.4 | Flame Photometric Analysis | |
| LOI | wt % | 15 | Gravimetric Analysis | ||
| CI- | wt % | 0.2 | 0.4 | Chemical Analysis | |
| D,50 | μm | 5 | 6 | Laser Scatter Distribution |
