Activated alumina is a high specific surface area, porous alumina material, widely used in adsorption, catalysis, drying and other fields. Among them, activated alumina with a particle size of 0.3-0.5mm has become an ideal choice for industrial and environmental protection applications due to its moderate particle size, excellent adsorption performance and good mechanical strength.
0.3-0.5mm activated alumina has a highly developed pore structure, with a specific surface area usually between 200-400m²/g and a pore volume of about 0.4-0.6cm³/g. This special structure enables it to efficiently adsorb water molecules, fluoride ions and other polar substances. In microscopic morphology, its surface is covered with nano-scale pores, and these interconnected pores form a huge internal surface area, providing ample space for molecular adsorption.
The material has excellent mechanical strength, and the compressive strength of a single particle can reach more than 50N, which enables it to withstand the impact of air or liquid flow in the dynamic adsorption system without being easily broken. At the same time, its thermal stability is outstanding and can withstand high temperature environments below 1000℃. This feature gives it a unique advantage in the field of high-temperature catalysis.
In the field of industrial gas drying, 0.3-0.5mm activated alumina is widely used for deep drying of compressed air, natural gas, hydrogen and other media. Its uniform particle size distribution ensures low pressure drop when the gas flows through the adsorption bed, while the high mechanical strength ensures that the system will not be blocked due to particle breakage during long-term use. Actual operation data shows that the drying system using this material can stably reduce the gas dew point to below -40℃.
Water treatment is another important application area of this material. In the drinking water defluorination project, 0.3-0.5mm activated alumina is used as a filter material to reduce the fluoride ion concentration in water from 5-10mg/L to below 1mg/L, which fully meets the national drinking water standards. In terms of industrial wastewater treatment, it also shows good removal effect on heavy metal ions such as lead and cadmium, and the removal rate can usually reach more than 90%.
In the petrochemical industry, this specification of activated alumina is mainly used as a catalyst carrier. Its moderate particle size ensures both sufficient specific surface area and good fluid mechanics. Alumina catalysts loaded with active components exhibit high activity and long service life in reactions such as hydrogenation and cracking. In addition, it also plays a key role as an acidic catalyst support in alkylation reactions.
With the continuous improvement of environmental protection requirements and the continuous progress of industrial technology, 0.3-0.5mm activated alumina is developing towards high performance and functionalization. If you have a demand for 0.3-0.5mm activated alumina, please contact Shandong Bairui Chemical Co., Ltd.
