Activated alumina is a material with a porous structure, and its numerous pores and large internal surface area give it good adsorption and loading capabilities. This characteristic is also one of the important reasons why it is used as a catalyst carrier.
However, at the same time, the porous structure means that the material is easily exposed to the surrounding environment. If the storage environment has high humidity, activated alumina may adsorb moisture from the air. Especially when the packaging has been opened and the product is exposed to air for a long time, the surface condition and moisture content in the pores may gradually change.
For catalyst carriers that need to load active metal components, the surface properties and pore structure of the carrier are very important. Therefore, during actual production and use, unnecessary moisture, dust, and other contaminants entering the product should be minimized.
The Storage Environment Should Be Kept Dry
The product should be stored indoors in a dry and ventilated environment, and long-term placement in high-humidity areas should be avoided. If there are obvious problems with moisture, condensation, or rainwater entering the warehouse, they should be dealt with promptly.
Especially during the plum rain season, rainy seasons, or in coastal areas with high humidity, more attention should be paid to moisture in the storage environment.
It should be noted that "ventilation" does not mean allowing the product to be exposed to outdoor air for a long time. The proper approach is to keep the warehouse environment dry and well-ventilated while avoiding direct contact between the product and humid air.
The Packaging Needs to Be Kept Intact and Sealed
During transportation and storage, the original packaging should be kept intact as much as possible. If the packaging bag is damaged, the seal is loose, or there are obvious signs of moisture absorption, the condition of the product inside should be checked promptly.
For products that have already been opened but have not been completely used, they should be properly resealed to minimize long-term contact between the product and air.
For exported products, it is especially necessary to consider the high-humidity environment that may be encountered during sea transportation. Therefore, reasonable inner and outer packaging design is very important for long-term transportation and storage.
Avoid Direct Contact Between the Product and the Ground
Activated alumina catalyst carrier is not recommended to be placed directly on a damp floor.
During storage, pallets or other methods can be used for isolation to keep the packaging at a certain distance from the ground. This can not only reduce the impact of moisture from the ground, but also reduce the risk of packaging damage and product contamination.
At the same time, it is not recommended to stack the products for a long time in areas that are prone to water accumulation, wall seepage, or are close to water sources.
Avoid Mixing with Other Chemicals
Activated alumina catalyst carrier should preferably be stored in a clean area and should be avoided from being stored together with volatile, corrosive, or obviously contaminating chemicals for a long time.
Although activated alumina has good chemical stability, its porous surface may adsorb substances from the surrounding environment. Therefore, in order to maintain the stability of the carrier surface condition and pore structure, unnecessary contamination should be avoided as much as possible.
Avoid High Temperatures and Significant Temperature Changes
Particular attention should be paid to significant changes in the temperature inside the warehouse. If there is a significant temperature difference between the inside and outside of the packaging, the risk of condensation forming may increase.
Therefore, the product should be kept away from high-temperature heat sources and stored in an environment with relatively stable temperatures as much as possible.
Does Longer Storage Time Always Mean Worse Performance?
Not necessarily.
Activated alumina catalyst carrier itself has good stability. When the packaging is intact, the environment is dry, and contamination is avoided, the product can maintain a relatively stable state.
What really needs to be considered is the storage conditions, rather than simply the storage time.
If the product is in a high-humidity environment for a long time or the packaging has been damaged, moisture adsorption and other problems may occur even if the storage time is not long.
Therefore, instead of simply focusing on "how long the product has been stored," it is better to focus on whether the product has maintained good packaging conditions and whether the storage environment meets the requirements.
Zibo Xiangrun Environmental Engineering Co., Ltd. is a professional alumina production enterprise that has long been focused on the research, development, and production of activated alumina, alumina adsorbents, pseudo-boehmite, and catalyst carriers. In response to the different requirements for carrier performance in different catalytic processes, Zibo Xiangrun can make targeted adjustments to the particle size, pore structure, specific surface area, pore volume, bulk density, and mechanical strength of activated alumina catalyst carriers according to customers' specific application requirements.
For customers who require long-term storage, long-distance transportation, or have high requirements for carrier performance stability, packaging, transportation, and storage requirements can also be discussed in advance during the purchasing stage, thereby reducing the risk of the product being affected by environmental factors during the supply chain process.
