Activated alumina balls are a porous and highly dispersed functional material, mainly composed of gamma alumina (γ - Al ₂ O3). Their performance characteristics can be summarized as follows:

1、 Physical performance

High specific surface area and porous structure

Activated alumina spheres have a specific surface area of 200-400 m ²/g, with mesopores ranging from 2-10 nm as the main pore size, forming a dense capillary structure that provides a large number of active sites for adsorption and catalytic reactions.

Excellent adsorption performance

Deep drying ability: can reduce the dew point of gas to below -70 ℃, suitable for dehydration of compressed air, natural gas, etc.

Selective adsorption: Strong affinity for polar molecules such as water and fluoride, with a fluoride removal capacity of 1.8-4 mg/g, and can be regenerated through aluminum sulfate solution.

Pollutant removal: It can adsorb sulfides (H ₂ S, SO ₂), lubricating oil vapors, and heavy metal ions (lead, arsenic).

Mechanical strength and wear resistance

The compressive strength reaches 50-120 N/particle, the wear rate is less than 0.8%, and the particle integrity can still be maintained under high pressure and high flow rate conditions.

2、 Chemical and Thermal Properties

chemical stability

Stable within the pH range of 4-9, resistant to acid, alkali, and salt corrosion, suitable for complex medium environments in the chemical and environmental protection fields.

thermal stability

Can maintain structural stability below 600 ℃, with a wide range of regeneration temperatures (200-500 ℃), and still exhibit catalytic activity at high temperatures.

3、 Functional characteristics

Catalytic performance

As a catalyst carrier widely used in reactions such as petroleum cracking and hydrogenation desulfurization, its surface hydroxyl (- OH) and metal loading capacity can enhance catalytic activity.

regeneration performance

Hot regeneration: Heat at 200-300 ℃ for 2-3 hours to restore adsorption capacity.

Chemical regeneration: Treatment with dilute hydrochloric acid or aluminum sulfate solution can remove pollutants, and the service life can reach 3-8 years.

4、 Application Fields

Industrial drying

Used for air separation units, instrument air drying, etc., to reduce gas dew point by 26; Used as a specialized regenerant in hydrogen peroxide production.

environment protection

Fluoride removal from drinking water (adsorption capacity up to 4 mg/g)

Removal of heavy metals from industrial wastewater

Exhaust gas desulfurization (improvement of H ₂ S conversion rate)

petrochemical industry

As a catalyst carrier, it is used in processes such as alkylbenzene production and Claus sulfur recovery to improve reaction efficiency.