Application of ozone decomposition catalyst in air purification equipment and analysis of life influencing factors

Ozone decomposition catalyst plays an important role in air purification equipment, its main function is to efficiently decompose ozone (O) into oxygen (O₂), so as to eliminate the harm of ozone to the environment and human health. As a strong oxidizing agent, ozone is used in some air purification equipment for sterilization and odor removal, but its residue may have a negative impact on the human respiratory tract and the ecological environment. Ozonolysis catalyst ensures the safety of air quality after purification by accelerating the ozonolysis reaction.
Application scenarios and principles
In air purification equipment, the ozone decomposition catalyst is usually installed downstream of the ozone generator for the treatment of residual ozone. The catalyst uses transition metal oxides (such as MnO₂, CuO) or precious metals (such as Pt, Pd) as the active ingredient and is supported on a porous carrier (such as activated carbon, ceramics). The principle of its action is to adsorb ozone molecules through the active site on the catalyst surface, reduce the activation energy of the decomposition reaction, and make it quickly converted into oxygen. This process is efficient and free of secondary pollution, and is widely used in household air purifiers, industrial waste gas treatment equipment, and medical air purification systems.
Factors affecting catalyst life
Ozone concentration: High concentrations of ozone will accelerate the oxidation reaction on the catalyst surface, resulting in the loss of active ingredients or the destruction of the carrier structure.
Temperature and humidity: The high temperature and humidity environment may cause the catalyst sintering or the active site is covered by water molecules, reducing the catalytic efficiency.
Pollutants: Airborne particles, volatile organic compounds (VOCs) and other pollutants may coat the catalyst surface and prevent ozone molecules from contacting the active site.
Operating conditions: Frequent start-stop or long periods of high load operation may lead to overheating or deactivation of the catalyst.
Strategies for extending catalyst life
Control ozone concentration and temperature and humidity within a reasonable range.
Regularly clean or replace the pre-filter of the air purification equipment to reduce the entry of pollutants into the catalyst layer.
Use catalyst materials with strong anti-pollution ability, such as doping rare earth elements or using core-shell structure.
In the future, with the development of new materials and intelligent technologies, ozone decomposition catalysts will play a greater role in the field of air purification, providing more efficient solutions for improving indoor air quality and protecting the environment.