Activated alumina is an aluminum oxide with many industrial applications. Due to its moisture-absorption properties, activated alumina makes an excellent desiccant material.
Similar to silica gel, charcoal has a greater surface area and pore structure which makes it more effective at removing moisture, while working with more gases and liquids than its predecessor.
1. Material
Activated alumina is an efficient desiccant that can be used to dry liquids or gases. It has the capability of drying acetylene, hydrogen, oxygen, nitrogen and air. Granular and spherical shapes with tailorable pore sizes enable activated alumina to meet specific adsorption and catalytic applications; its liquid water resistance ensures consistent catalysis performance while its high crush strength prevents channeling during loading of adsorption towers.
Unlike silica gel, which is synthetically manufactured material, activated alumina is made from natural mineral bauxite ore and undergoes a controlled activation process at elevated temperatures to convert aluminum hydroxide to aluminium oxide. As part of this process, activated alumina develops many pores and channels which increase its surface area-to-weight ratio, enabling it to absorb large quantities of moisture.
Activated alumina outshines other desiccants like silica gel and carbon molecular sieves by being more adept at quickly absorbing moisture than its competitors, including silica gel and carbon molecular sieves. Hơn nữa, activated alumina’s less susceptible moisture degradation makes it suitable for industrial uses.
2. Packaging
Activated alumina is an effective desiccant for drying air and gases, made by heating aluminum hydroxide to form a porous network with high surface area to mass ratio. Hơn nữa, activated alumina can be impregnated with chemicals to increase its moisture-absorbent properties.
Activated alumina differs from silica gel in that it comes in the form of solid granules that vary in size. With high crush strength and water slugging resistance, activated alumina makes an ideal material for applications like compressed air dryers.
Activated alumina can be impregnated with potassium permanganate KMNO4 to increase its oxidizing power and decrease moisture content even further, helping remove H2S, chlorine, formaldehyde and nitric oxide from the air. Once impregnated with this compound it can then be dried and packaged ready for shipping; activated alumina is widely used across several applications such as oil refinement, gas drying and food and beverage production as well as protecting electronic devices against corrosion.
3. Shipping
Activated alumina has great moisture-absorption capabilities, and is capable of capturing various gases such as nitrogen, helium, chlorine, hydrogen sulfide and argon. Hơn nữa, its affinity for liquids such as kerosene and aromatic compounds make them highly sought-after desiccant solutions. Infusing indicators into activated alumina makes for easy monitoring and replacement.
Aluminium oxide is created through several processes beginning with aluminum hydroxide extracted from bauxite ore and transformed through calcination at high temperatures into aluminum oxide using expulsion of water molecules from crystal lattice and formation of pores, giving it a much higher surface area than silica gel or molecular sieve.
Active Alumina can be utilized in various capacities, including dry gas desiccation (absorbing moisture), catalyst applications and water filtration. It has many uses in oil refineries for sulfur recovery efforts as well as for Claus catalysts used in producing LPG. Hơn nữa, activated Alumina is often employed in water purification to remove fluoride, arsenic and selenium contamination of drinking water supplies, while it can also help remove degradation acids from transformer oils and lubricants.
4. Quality
Activated alumina desiccant is an economical, high-quality choice for industrial moisture management, helping reduce downtime and maintenance in compressed air systems while improving performance and reliability. Unlike silica gel desiccants, activated alumina desiccant works through both chemical and physical mechanisms to absorb water molecules; making it particularly suitable for environments requiring moisture control such as oil refineries.
Packed with low bulk density and thermal stability features, desiccant is an economical choice in many applications involving heat-sensitive materials. Hơn nữa, regeneration temperatures tend to be lower compared with other desiccants; thus significantly lowering energy consumption.
Aluminum Oxide with a large surface area makes Edmac Aluminum Oxide an efficient moisture absorber, as its highly porous surface area enables it to absorb liquids without softening, shrinking or disintegrating in liquid environments. Hơn nữa, its high crush strength limits dusting during tower depressurization and loading operations while its uniform bead size minimizes pressure drop and prevents gas flow channeling. Various grades such as Granulated Powdered or Impregnated Potassium Permanganate KMNO4 are available; for more information please reach Edmac.
5. Price
Activated alumina desiccant is an aluminum oxide material produced through heating to produce a highly porous, surface area-to-mass ratio material, making it useful in the removal of gases in liquids as well as drying volatile gases like propane without risking equipment corrosion and leaks. Hơn nữa, activated alumina desiccant offers numerous other important qualities including strong crush toughness and thermal shock resistance.
Contrary to silica gel, alumina does not shrink or swell when exposed to hot water, maintaining its absorption capability even after being completely regenerated. Hơn nữa, its uniform bead size and low pressure drop reduce channeling significantly.
Activated alumina impregnated with potassium permanganate (KMNO4) media can be used as a chemical sorbent to remove hydrogen sulfide, sulfur dioxide, nitrogen oxides and mercaptans from airstreams. Hơn nữa, activated alumina impregnated with KMNO4 media is an ideal choice for gas purification via selectively adsorbing molecules with polarities making it suitable for column chromatography applications. Sales in the activated alumina market are anticipated to increase by 2032 with increasing demand from oil&gas and water treatment industries driving sales further growth in sales and activated alumina market sales globally.