USY Zeolite TDS
This technical data sheet covers the current standard H-USY powder range. The February 2026 handbook publishes H-form powder specifications and refining, denitrification, desulfurization, and adsorption applications; it does not publish RE₂O₃, mesopore-volume, microsphere, or formulated-catalyst specifications. RE-USY, mesoporous USY, and microspheres therefore require a separate technical agreement, quotation, and batch COA.
Typical Specifications
| Parameter | Typical Range | Test Method |
|---|---|---|
| SiO₂/Al₂O₃ (molar) | 12-100 | XRF |
| Standard catalogue bands | 12-15, 20-25, 30-35, 50-70, 80-100 | Product selection range |
| BET surface area | >500 m²/g | N₂ adsorption, BET method |
| Primary crystal size | 500-1000 nm | SEM |
| Pore size | ~7.4 Å | 12-MR FAU windows |
| Na₂O content | ≤0.10 wt% | XRF or AAS |
| Powder particle size (D50) | Confirm by grade and COA | Laser diffraction |
| XRD crystallinity | Confirm by grade and COA | vs FAU reference |
| Framework | FAU (dealuminated) | XRD confirmation |
Available Grades
- Standard H-USY powder (SiO₂/Al₂O₃ 12-100)
- Rare-earth-exchanged, mesoporous, microsphere, or shaped products only after technical confirmation
Certificate of Analysis
The batch COA records the agreed release parameters for the selected grade. For standard powder, define SiO₂/Al₂O₃ ratio, BET surface area, crystal size or powder D50, ion form, sodium limit, and XRD requirement before quotation. Formulated-product tests such as RE₂O₃, attrition, or MAT activity require a separate specification.
To request a sample with COA, specify your target SiO₂/Al₂O₃ band, feedstock or application, ion form, particle requirement, and whether a formulated FCC product is required.
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