The application fields of activated alumina are mainly adsorption field and catalyst field.
1. application of activated alumina in adsorption field
As an adsorbent, it is one of the main USES of activated alumina, which is mainly due to its large specific surface area, reasonable pore structure, good physical properties, good chemical stability and many other favorable factors.Its important industrial applications include drying gas, drying liquid, purifying and treating water, and selective adsorption in petroleum industry.
2 application of activated alumina in gas drying
Because activated alumina and water have a strong affinity, so it is very strong in the drying capacity of the water in the gas, in the industrial application of the desiccant, calcium chloride, silica gel, calcium oxide drying capacity are lower than activated alumina, only barium oxide drying capacity is slightly higher than activated alumina.At the same time, because the chemical stability of alumina is good, only a small part of the gas and it have a chemical reaction, so it can dry a lot of gas species is very much, the literature introduced that it can dry acetylene, hydrogen, oxygen, air, nitrogen and other more than 20 kinds of gas.
3. application of activated alumina in liquid drying
Liquid drying is much more complicated than gas drying, and the desiccant requirements are relatively high.First, chemical reactions cannot occur between the components of the liquid or between the liquid and the oxygen adsorbent when the liquid is in contact with the adsorbent.At present, it has been proved that the liquids that can be dried by alumina are common aromatic hydrocarbons, macromolecular alkenes, gasoline, kerosene, etc.
4.application of activated alumina in catalyst field
In many industrial catalytic processes not only itself is used as the catalyst, alumina and extensively used as the carrier of catalyst active component, and, with activated alumina catalyst carrier forming method improvement, a variety of methods are used in the industries of catalyst carrier, such as block method, granulating method, compaction, into a ball squeezing method and so on, therefore, it can be various shapes catalyst carrier.
Post time: Apr-07-2020