SSZ-13 molecular sieve is a small pore molecular sieve with CHA topological structure. Its skeleton structure is composed of six prisms composed of four rings and six rings. The spatial arrangement of these basic units constitutes CHA supercage (6.7×10 Å) and eight-ring (3.8×3.8Å) channels.
SSZ-13 molecular sieve has great advantages and development potential in the field of environmental catalysis and gas adsorption separation. SSZ-13 zeolites with copper exchange show excellent catalytic performance in selective catalytic reduction reaction (NH3-SCR). It has a wide active temperature window, and the NOx conversion rate is more than 90% at 250-450℃. The pore structure of SSZ-13 can inhibit the formation of by-products (NO2 and N2O) and improve the selectivity of N2. In addition, it can also inhibit the removal of skeleton Al in the process of high-temperature hydrothermal aging, thus improving the hydrothermal stability, and has a broad application prospect in the field of diesel vehicle tail gas denitrification.
Technical Specifications
SSZ-13 Typical Specification
| Item | SSZ-13 | Test Method |
| Na2O (ppm) | 1000 max | X-Ray Fluorescence |
| Fe2O3 (ppm) | 2000 max | – |
| Cl (ppm) | 150 max | Turbidimetry |
| C (ppm) | 1000 max | – |
| LOT (%) (1000℃/1hr) | 10 max | Muffle oven roasted at
1000℃ for 1 hour |
| Particle Size(um) D90 | 25 max | Laser particle analyzer |
| Mean Particle Size (um) | 1-10 | Laser particle analyzer |
| Water Adsorption Rate(%) | 12-26 | – |
| Fresh SA (m2/g) | 500 min | N2 physical adsorption |
| SiO2/Al2O3 | 20-28 | X-Ray Fluorescence |
| Hunter Colour Test | 85 | Ultraviolet spectrophotometer |
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