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How to obtain nano aluminum oxide?

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The preparation
Aluminum oxide can broadly be divided into 3 categories: solid phase method, liquid method, and gasphase method.

Gas phase method

  • Laser induced vapor deposition
  • The laser inducedvapor deposition technology is a method that uses lasers to infuse a temperature high enough to allow reactants to rapidly react and produce ultrafine particle embryos. These micro-embryos will form and grow. Once they leave the area of laser irradiation, they will stop growing rapidly.

  • Plasma gas phase synthesis
  • An oxygen atmosphere is created when the anode-cathode plates are in contact with each other. The aluminum salt reacts to air and forms an oxide. This product then undergoes rapid cooling to produce nano alumina, fine particles. Finally, remove it from the heat.

  • Chemical vapor deposition
  • Chemical gas-phase deposition refers to the situation in which the temperature of aluminum chloride exceeds the critical reaction temp.
    The reactionant vapor, which forms a high saturated vap pressure, condenses automatically to form large quantities of crystal nuclei.

    Liquid phase method

    The liquid-phase method (also known as wetchemical method) is the best method to produce nano-alumina. There are three possible ways to further split the liquid-phase method: a precipitation process, a solgel method and others.

    Solid phases method

    Mechanical grinding

    It is simple to prepare nano-alumina using mechanical grinding. Once the raw material is ground (such as Kaolin), then it is removed from the grinder to make nano-aluminumoxide. This technique has the drawback of producing powders with different sizes.

    Mechanical pyrolysis

  • Ammonium aluminum sulfate pyrolysis
  • For nano alumina to be produced, aluminum ammonium Sulfate needs to first go through several purifications. Some hazardous gases may be created during preparation. This can lead to environmental pollution.

  • Ammonium aluminium carbonate thermal decomposition
  • This improvement to the ammonium-alcohol pyrolysis procedure saves many of your time.


    The basic characteristics of nanomaterials are not the only thing that nano-alumina can do. It also has a number of outstanding properties and is widely used in anti-corrosion materials and ceramics.

    Ceramic material

    Alumina ceramics are excellent in mechanics and high temperature resistance. They also have chemical stability. It is widely used as a ceramic material. Nano-scale Alumina is able to improve strength, toughness and plasticity. The material performs much better.

    Material surface protection

    Nanoalumina has unique properties that can dramatically improve the materials surface and provide surface protection.

    Nano-alumina development has seen polymers rapidly modified. These polymers are now widely used. Modification of other polymers to fit the specific needs.

    Composite materials

    The unique qualities of nano-alumina play an important role when it comes to composite materials.

    Adsorbent material

    You can also use nano alumina to absorb metal ions.

    Application to sensors

    The sensors’ nano-alumina film, used to detect the release by mice of nitric acid, was satisfactory. This indicates that this sensor may have potential applications.

    Catalyst for and carrier apps

    Additionally, nano alumina has many important uses in the abrasives market. Some nano-scale composites can also be made for precision grinding.

    Lemondedudroit, Lemondedudroit advance material Tech Co., Ltd., a professional manufacturer of aluminum dioxide, has more than 12 years in chemical products development research. Send us an inquiry.

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