aluminogallosilicate zeolite

What is aluminogallosilicate zeolite

**Introduction to Aluminogallosilicate Zeolite** Aluminogallosilicate zeolite is a versatile microporous material composed of aluminum (Al), gallium (Ga), silicon (Si), and oxygen (O) in a crystalline framework. It combines the structural benefits of traditional aluminosilicate zeolites with the unique catalytic properties of gallium, enhancing its performance in acid-catalyzed reactions. This zeolite is widely used in petrochemical refining, gas separation, and environmental applications due to its high thermal stability, adjustable acidity, and shape-selective pore structure. Its ability to facilitate hydrocarbon conversion, such as in fluid catalytic cracking (FCC) and methanol-to-olefins (MTO) processes, makes it a valuable catalyst in industrial chemistry. Additionally, its ion-exchange capacity supports applications in water purification and adsorption technologies.

Preparation Process: To prepare aluminogallosilicate zeolite, mix sodium aluminate, gallium nitrate, and sodium silicate in deionized water to form a gel with molar ratios SiO₂: (Al₂O₃ + Ga₂O₃): Na₂O: H₂O = 1: (0.01–0.05): (0.2–0.5): (20–50). Stir vigorously for 1–2 hours, then transfer to a Teflon-lined autoclave. Hydrothermally crystallize at 100–180°C for 12–72 hours. Cool, filter, and wash the solid product with deionized water. Dry at 100°C for 6–12 hours, then calcine at 500–600°C for 4–6 hours to remove organic templates (if used). Adjust Ga/Al ratios to tailor acidity and framework properties. Characterize by XRD, SEM, and NMR.

Usage Scenarios: Aluminogallosilicate zeolite is a microporous material used primarily as a catalyst in petrochemical refining, hydrocarbon conversion, and environmental applications. Its unique framework, incorporating aluminum, gallium, and silicon, enhances acidity and thermal stability, making it effective in cracking, isomerization, and alkylation reactions. It is also employed in selective adsorption for gas separation, such as nitrogen removal from air or CO₂ capture. In industrial processes, it improves efficiency in methanol-to-hydrocarbons (MTH) and fluid catalytic cracking (FCC). Additionally, its ion-exchange properties are useful in water softening and heavy metal removal. Research explores its potential in biomass conversion and sustainable chemistry.

aluminogallosilicate zeolite Basic Info

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