Boehmite
Boehmite is an important precursor for the preparation of γ-Al2O3 and α–Al2O3, Mainly used in catalyst and its carrier materials, coating material, porous membranes and soft abrasive, high temperature ceramics etc.
1. Product introduction:
Boehmite, is an alumina hydrate with a crystal of water, the crystal is orthorhombic (orthorhombic) crystal into the γ phase of the hydrogen Oxide mineral, the product is non-toxic and tasteless, white powder, at 300 ℃ lose water, do not dissolve in water and ethanol, is a typical amphoteric hydroxide, dissolved in dilute inorganic acid or sodium hydroxide solution.
2.Specification
|
SiO2％ |
Fe2O3% |
Na2O％ |
Al2O3％ |
3H2O ％ |
D50 um |
Betm2/g |
|
≤0.1 |
≤0.04 |
≤0.2 |
≥80 |
≤4 |
≤3.5 |
≥70 |
3. The main application
The product is widely used in catalyst carrier, flame retardant, electronic ceramic substrate and other industries, is the catalyst (carrier), stabilizer, coloring agent and other products of good raw materials, food additives is an important raw material. Preparation of low-sodium alumina for electronic ceramics, preparation of activated alumina with high-purity alumina precursors for phosphors, submicron α-alumina powder with high sodium conversion and high spark plugs for internal combustion engines such as insulators, automobiles and aircrafts In the production of heat-resistant and wear-resistant ceramic devices, high-grade electrical filler, electronic ceramics and ceramic materials, such as microcrystalline.
