| 摘要 |
The invention relates to methods for producing aluminum trioxide in the form of powders or agglomerates having particles which have a porous honeycomb structure, which can be used as catalyst carriers, adsorbents and filters in the chemical, food and pharmaceutical industries. The method for producing aluminum oxide in the form of powders or agglomerates having particles which have a porous honeycomb structure includes treating an aluminum salt with an alkaline reagent solution, washing the precipitate and heat treating same. The technical result is obtaining aluminum oxide in the form of separate particles having a set structure and characteristics, and specifically having a particle porosity of 60-80% and a porous structure of extended parallel channels which are packed approximately hexagonally and have a channel size of 0.3-1.0 microns in width and up to 50 microns in length. To this end, the aluminum salt used is aluminum chloride hexahydrate crystals which are treated with excess aqueous ammonia solution at a temperature of 20-80°C, forming boehmite, and the heat processing is carried out at 450-650°C until aluminum oxide is produced. |
