Product brand:Joseph
Place of origin:China
Product Name: Pseudoboehmite (alias: Alumina Monohydrate, Pseudo-Boehmite)
Product Introduction：Psueod-Boehmite is an alumina crystal containing 1.8-2.5 water of crystallization molecules, it is a crystalline phase generated in the synthesis of aluminum hydroxide, is the transition state of aluminum hydroxide, its crystallization is incomplete, the typical crystal shape is very thin with folded lamellar.
Compared with aluminum hydroxide, Pseudo-boehmite has incomplete water crystal molecules, so it has many special properties, such as: Pseudo-boehmite molecules have spatial network structure, large pores, developed specific surface area, thixotropy into a viscous colloidal matter under acidic environment, etc.. All these characteristics make Pseudo-boehmite have a completely different use from aluminum hydroxide.
Technical Characteristics：Production of simple raw materials, low cost, fixed technical process.
Applications：
1. Used as binder and aluminum source for molecular sieve synthesis in petrochemical and refining catalyst industry.
Pseudoboehmite is mainly used as a binder for catalytic cracking catalyst. As a binder, Pseudo-diaspore can not only improve the strength of catalyst, but also adjust the pore size distribution of catalyst, improve the thermal and hydrothermal stability of catalyst, adjust the density of acid active center of catalyst, and improve the catalytic activity. It can be used as binder for semi-synthetic rare earth Y type molecular sieve cracking catalyst, binder for aluminum silicate refractory fiber, catalyst for alcohol dehydration to produce ethylene and reoxyethane , etc. It can also be used as raw material for the production of catalyst carrier, activated alumina and other silico-aluminate.
2. Used as catalyst carrier.
Pseudoboehmite is widely used as catalyst carrier for chemical, oil refining and petrochemical reactions. Its typical examples are hydrorefining catalyst carrier, reforming catalyst carrier, methanation catalyst carrier and so on. Pseudo-boehmite can also be used as catalyst after dehydration to become γ -alumina. γ -Al2O3 calcined at 400 ~ 700℃ is widely used as catalyst carrier, catalyst and adsorbent.
3. Used as ceramic corundum abrasive.
Pseudoboehmite has good dispersibility and solubility, can make the micron/nanometer level grinding materials, in 1100 ~ 1200 ℃ calcination can get nanoscale α-Al2O3, widely used for coatings additives, high-grade ceramic, petrochemical efficient catalyst, micron/nanometer level abrasives and polishing materials, cosmetics filling and inorganic membrane materials, It is a kind of new material with huge development prospects, and has partially replaced imported SB powder in China.
Technical Specification(TDS)：
Item/ Type No. | Chemical composition | Physical property | |||||||
SiO2% | Fe2O3% | Na2O% | Al2O3% | LOI % | Loose Bulk density g/cm3 | Dispersibility（Aqueous Matrix）% | Pore Volum ml/g | Specific Surface m2/g | |
JASB500 | ≤0.2 | ≤0.02 | ≤0.05 | 65-75 | 25-35 | ≥0.85 | ≥98 | ≥0.35 | ≥240 |
Packaging :Woven bags lined with plastic bags 25kgs/bag or 1000kgs/supersack.
Transportation: non-dangerous goods, but during transportation to avoid moisture, keep dry, sealed.
Storage: store in dry and ventilated place, not in the open air.