China Gold Supplier For Dimeryl Diisocyanate - Activated Alumina for H2O2 production, CAS#: 1302-74-5, Activated Alumina – Zipen

Industry standard

Our products conforms to HG/T 3927-2007
Properties of alumina special for hydrogen peroxide
Crystal phase: γ-Al2O3
Specification (mm): 7～14 mesh Φ 3～5, Φ4～6, Φ5～7
Exterior: White ball granule
Heap density (g/cm3): 0.68-0.75
Strength (N/grain): >50
Surface area (m2/g): 200～260
Pore volume (cm3/g): 0.40～0.46
Large hole (>750A): 0.14
Water absorption (%): >50

Application of activated alumina as adsorbent

The main liquids that activated alumina can be dried are: aromatic hydrocarbons, polymer olefins, gasoline, kerosene, cyclohexane, propylene, butene, and many halogenated hydrocarbons. When these liquids are in contact with alumina, the two will not react or polymerize. At the same time, the dry liquid does not contain components that are easily adsorbed on the alumina surface and are not easily removed during regeneration.

Factors affecting adsorption performance

1. Particle size: The smaller the particle size, the higher the adsorption capacity, but the smaller the particle size, the lower the particle strength, which affects its service life.
2. Raw water pH value: When the pH value is higher than 5, the lower the pH value, the higher the adsorption capacity of activated alumina.
3. Initial fluorine concentration in raw water: the higher the initial fluorine concentration, the larger the adsorption capacity.
4. The alkalinity of the raw water: the high concentration of bicarbonate in the raw water will reduce the adsorption capacity.
5. Chloride ion and sulfate ion.
6. The influence of arsenic: activated alumina has an adsorption effect on arsenic in water. The accumulation of arsenic on activated alumina causes a decrease in the adsorption capacity of fluoride ions, and makes it difficult to elute arsenic ions during regeneration.