Aluminum Oxide Nanopowder (Al2O3, gamma, 99.99%, 5nm)

Technical Specifications

1. Product Name: Aluminum Oxide Nanopowder
   • Chemical Formula: Al₂O₃ (Aluminum Oxide)
   • CAS Number: 1344-28-1
2. Purity
   • Grade: 99.99% (ultra-high purity)
   • Impurities: ≤0.01% (trace amounts of other oxides or non-metallic elements)
3. Particle Size
   • Average Size: ~5 nm
   • Particle Size Distribution: Verified using SEM (Scanning Electron Microscopy) or TEM (Transmission Electron Microscopy)
4. Crystal Structure
   • Phase: Gamma-phase, a metastable form of Al₂O₃ known for its high surface area and catalytic activity
5. Morphology
   • Shape: Near-spherical particles
   • Surface Area: Extremely high due to nanoscale size, enhancing catalytic and adsorption properties
6. Physical and Chemical Properties
   • Color: White powder
   • Density: ~3.6 g/cm³ (slightly lower than alpha-phase due to the metastable structure)
   • Melting Point: ~2,072 °C (gamma-phase transitions to alpha-phase at elevated temperatures)
   • Thermal Stability: Stable up to ~900 °C before transitioning to alpha-phase
   • Electrical Properties: Excellent insulating material
7. Packaging and Storage
   • Standard Packaging: Sealed in airtight containers to minimize contamination and moisture absorption
   • Storage Conditions: Store in a cool, dry environment; avoid exposure to air and moisture
   • Shelf Life: Stable under proper storage conditions; gamma-phase stability may diminish if exposed to high temperatures
8. Safety and Handling
   • Hazards:
     • Fine aluminum oxide powder may cause respiratory irritation if inhaled.
     • Non-combustible but may create airborne particles during handling.
   • Recommended Protective Measures:
     • Use PPE (e.g., gloves, goggles, and dust masks).
     • Ensure proper ventilation and handle with care to avoid dust generation.

Applications

1. Catalysis
   • Catalyst Support: Gamma-phase Al₂O₃ is widely used as a support material for catalysts in petrochemical, pharmaceutical, and environmental applications due to its high surface area.
   • Chemical Catalysis: Ideal for reactions such as hydrocracking, hydrogenation, and oxidation.
2. Adsorption and Filtration
   • Pollutant Adsorption: Effective in adsorbing heavy metals, organic compounds, and gases in environmental remediation.
   • Water Treatment: Used as a filter material for removing contaminants from water and air.
3. Energy Applications
   • Battery Materials: Gamma-phase Al₂O₃ is used in lithium-ion batteries as a coating material to enhance separator stability and thermal safety.
   • Fuel Cells: Acts as a component in solid oxide fuel cells (SOFCs) due to its chemical stability.
4. Electronics
   • Insulating Layers: Utilized in thin-film capacitors and semiconductors for its excellent dielectric properties.
   • Thermal Management: Enhances heat dissipation in thermal interface materials (TIMs).
5. Coatings and Surface Treatments
   • Protective Coatings: Used to produce wear-resistant and corrosion-resistant coatings for tools and machinery.
   • Antireflective Coatings: Applied in optical devices to improve performance and durability.
6. Biomedical Applications
   • Drug Delivery Systems: Explored for its potential to act as a carrier for targeted drug delivery due to its biocompatibility and nanoscale size.
   • Biocompatible Coatings: Applied on medical implants for improved integration with biological tissues.
7. Nanocomposites
   • Reinforcement Material: Enhances the thermal, mechanical, and chemical properties of polymer, ceramic, and metal composites.
   • Lightweight Structures: Ideal for aerospace and automotive applications requiring high strength-to-weight ratios.
8. Polishing and Abrasives
   • Precision Polishing: Used in polishing semiconductors, optical lenses, and other precision devices.
   • Abrasive Tools: Incorporated in fine abrasive applications due to its hardness and small particle size.
9. Research and Development
   • Material Science: Widely used in experimental studies exploring the properties and applications of nanoscale aluminum oxide.
   • Prototype Testing: Ideal for developing advanced materials in catalysis, energy storage, and biomedical fields.

Key Features

• High purity (99.99%) and gamma-phase structure provide exceptional catalytic and adsorption properties.
• Nanoscale particle size (~5 nm) ensures high surface area and enhanced reactivity.
• Versatile applications in catalysis, energy storage, electronics, coatings, and biomedical research.