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By Lzh | 08 February 2023 | 0 Comments

Why spherical alumina can be used as catalyst and catalyst carrier?

What is spherical alumina?
Spherical alumina is also called sand-like Alumina, α Alumina α In the lattice of type I Alumina, oxygen ions are hexagonal and closely stacked, and AI3+is symmetrically distributed in the octahedral coordination center surrounded by oxygen ions. The lattice energy is large, so the melting and boiling points are very high. It has corrosion resistance, wear resistance, high-temperature resistance, high strength, good insulation, large surface area, high hardness, oxidation resistance, etc. The producers of spherical Alumina are mainly concentrated in Japan, China, South Korea, etc., and the industry concentration is also high. China is the largest production area in the world; in 2018, it accounted for 57.14% of the production share, followed by Japan, which produced 3446 tons of spherical Alumina in 2018, accounting for 30.76%.
Preparation of spherical alumina
The precipitation process in the homogeneous precipitation method is the process of crystal nucleus formation, then aggregation and growth, and finally precipitation from the solution, which is usually non-equilibrium. However, suppose the concentration of the precipitator in the homogeneous solution can be reduced or even slowly generated. In that case, a large number of tiny crystal nuclei will be uniformly generated, and the final formed fine precipitation particles will be uniformly dispersed in the entire solution; in addition, it will maintain an equilibrium state for a long time. This method of obtaining precipitation is called the homogeneous precipitation method. The advantages are simple to process, low cost, high purity, mass production of equipment, simple manufacturing, and short process flow. The disadvantages are that the existing colloidal substances are difficult to precipitate, water washing and filtration, and the powder is easily mixed with a precipitating agent. During precipitation, the powder components are not easy to separate, the sediment can be dissolved again during water washing, and the precipitating agent will also cause many complex ions.
Use of spherical alumina
Catalyst and catalyst carrier: Ultrafine Alumina has strong adsorption characteristics, many surface active points, high reaction activity, and selectivity, providing the necessary conditions for the catalytic reaction. Spherical Alumina used directly as a catalyst can reduce wear, improve the service life of the catalyst, and reduce production costs.
Price of spherical alumina
Spherical alumina particle size and purity will affect the product's price, and the purchase volume can also affect the cost of spherical alumina. A large amount of large amount will be lower. The price of spherical alumina can be found on our company's official website.
Spherical alumina supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including spherical alumina, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective spherical alumina, you are welcome to contact us or inquire at any time.

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