Activated Zeolite
Overview
Activated Zeolite is a processed form of natural or synthetic zeolites, engineered to enhance porosity and adsorption capacity. Its crystalline aluminosilicate framework contains uniform micropores, enabling selective molecular sieving. Widely used in industrial and environmental applications, it is valued for its versatility and cost-effectiveness. First commercialized in the 1960s, activated zeolites now play critical roles in refining, wastewater treatment, and gas purification. Their eco-friendly profile and regenerative properties make them a sustainable alternative to chemical adsorbents.
Physical and Chemical Properties
Activated Zeolite exhibits a high surface area (300–1,000 m²/g) due to its microporous structure. The SiO2/Al2O3 ratio determines acidity and hydrophilicity, with higher ratios favoring hydrophobic applications. It retains stability up to 700°C, making it suitable for high-temperature processes. Its ion-exchange capacity arises from negatively charged AlO4 tetrahedra, balanced by cations like Na+ or K+. This property is exploited in water softening and nuclear waste treatment. The material is inert to most solvents but degrades in strong acids or bases.
Main Applications
In petroleum refining, activated zeolites (e.g., Type Y) catalyze cracking and isomerization. Environmental uses include heavy metal removal from wastewater and ammonia capture in aquaculture. Agriculture benefits from its slow-release fertilizer carriers and soil conditioners. Gas separation industries rely on its pore-size selectivity for N2/O2 production or CO2 capture. Emerging applications span hydrogen storage and medical oxygen concentrators, leveraging its reversible adsorption kinetics.
Safety and Storage
While non-toxic, zeolite dust may cause respiratory irritation; PPE like N95 masks is recommended for handling powders. Store in moisture-proof packaging to prevent premature hydration, which reduces adsorption capacity. Spent zeolites contaminated with heavy metals or organics require hazardous waste disposal. Reactivation via calcination at 350–550°C restores performance but demands proper ventilation to avoid dust explosions.
B2B Procurement Guide
Key specifications include pore diameter (3Å–10Å), bulk density (0.6–0.8 g/cm³), and crush strength (>30 N/bead). For catalysis, acid sites and thermal stability are critical; for adsorption, moisture content (<1.5% wt) is prioritized. Suppliers typically offer technical datasheets with CO2/N2 adsorption isotherms. Bulk orders (20+ tons) may qualify for 10–15% discounts. Verify ISO 9001 certification and request pilot-scale testing for custom formulations.
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