The effects of temperature increase when using ozone decomposition catalyst
When using ozone decomposition catalysts, heat is usually generated, causing the temperature of the equipment to rise. What adverse effects will excessive temperature bring about?
1. The catalytic activity may decrease.
Most ozone decomposition catalysts exhibit good catalytic activity within a certain temperature range (typically ambient temperature to 80°C, and some can reach up to 120°C). However, if the temperature is too high (such as exceeding 100-120°C, which will depend on the type of catalyst), the activity of the catalyst may decrease or even deactivate. The reasons are as follows:
The active components may sinter or change their crystal structure;
The carrier structure may be damaged (such as the oxidation aluminum carrier undergoing high-temperature sintering);
The surface area of the catalyst may decrease, and the active sites may be covered or reduced;
It may trigger side reactions, such as the production of nitrogen oxides (when NOx is present) or other products.
2. The catalyst lifespan shortens.
Ozone decomposition catalysts, when operated at high temperatures for a long time, are prone to aging, sintering or poisoning, thereby reducing their service life.
3. Safety risks exist.
If the temperature is too high, it may also cause problems with the temperature resistance of equipment materials, or increase the risk of fire/explosion (although ozone itself is not flammable, there are still safety hazards when high temperature coexists with certain impurities).
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