About the application of activated alumina in air purification and formaldehyde removal

1. Characteristics and application of activated alumina

Activated alumina is a porous, highly dispersed inorganic material, which has shown wide application value in many fields with its unique physical properties. Its rich internal microporous structure gives activated alumina a huge specific surface area, which enables it to effectively adsorb and separate impurities in gases and liquids, making it a leader in the field of adsorbents.

In conventional applications, activated alumina is widely used in the drying and purification of gases and liquids and as a carrier of catalysts due to its excellent adsorption performance, thermal stability and chemical stability. For example, in the petrochemical industry, activated alumina, as a dehydrating agent and desulfurizing agent, can effectively remove moisture and sulfides from the raw gas and ensure the stable operation of subsequent processes. At the same time, as a catalyst carrier, it can load various active components and improve the efficiency and selectivity of the catalytic reaction.

2. Activated alumina carrier

As a catalyst carrier, activated alumina can not only provide abundant active sites to promote full contact between the catalyst and the reactant, but also effectively disperse the active components of the catalyst to prevent their agglomeration and deactivation. In terms of precious metal catalysts, activated alumina can load precious metals such as platinum and palladium to form efficient precious metal catalysts, which are widely used in automobile exhaust purification, organic waste gas treatment and other fields. In terms of oxide catalysts, activated alumina can load oxides such as copper and manganese to form composite materials with specific catalytic properties, which are used for organic wastewater treatment, catalytic oxidation reactions, etc. In addition, activated alumina is also commonly used as a carrier for acidic catalysts and hydride catalysts, as well as the preparation of fuel cell catalysts.

3. In terms of air purification and formaldehyde removal

As an air purification material, activated alumina is particularly used in formaldehyde removal. By loading a catalyst with formaldehyde removal activity, activated alumina can efficiently decompose formaldehyde in the air into harmless carbon dioxide and water. Activated manganese catalysts and copper-manganese composite oxide catalysts are two common formaldehyde removal catalysts loaded on activated alumina.

These catalysts can take advantage of the porous structure and specific surface area of activated alumina to improve the adsorption and catalytic decomposition efficiency of formaldehyde. Under appropriate temperature and humidity conditions, these composite materials can quickly oxidize formaldehyde in the air into harmless substances, thereby effectively improving indoor air quality.

In addition, activated alumina as a carrier can also be used in combination with other air purification materials (such as activated carbon, photocatalyst, etc.) to form a composite material with multiple purification functions.

These composite materials can simultaneously remove harmful substances such as formaldehyde and benzene in the air, providing a more comprehensive and efficient solution for indoor air purification.

4. Xintao Activated Alumina Production Factory

Xintao produces a variety of activated alumina models with rich pores and stable product quality higher than industry standards. The particle surface is smooth and strong, and it will not crack after long soaking. Welcome to collect samples for testing.