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Why is pretreatment necessary for exhaust gas in the use of ozone destruction catalysts?

Ozone destruction catalysts play a crucial role in treating exhaust emissions. They effectively convert harmful gases such as carbon monoxide (CO), nitrogen oxides (NOx), and volatile organic compounds (VOCs) into harmless oxygen (O2) and water vapor, thereby reducing the release of air pollutants. Through the active centers on the catalyst's surface, ozone catalysts promote these chemical reactions, enhancing reaction rates and efficiency, making the exhaust cleaner and more environmentally friendly after treatment.

What challenges do ozone destruction catalysts face in treating exhaust emissions, and why is pretreatment of exhaust gas necessary?

However, in practical applications, ozone destruction catalysts face some challenges. Exhaust gases may contain high concentrations of sulfides, particulate matter, or other harmful substances, which may reduce the efficiency of the catalyst or cause it to be poisoned and deactivated. Therefore, to ensure the long-term stable operation and high efficiency of ozone catalysts, pretreating exhaust gas is particularly important.

Pretreatment of exhaust gas can include measures such as removing sulfides, reducing particulate matter concentrations, or adjusting exhaust gas temperatures. These pretreatment steps can reduce damage to the catalyst, extend its lifespan, and ensure its effectiveness and reliability under various environmental conditions.

What are the differences between using ozone destruction catalysts with and without pretreatment?

Exhaust gas that has been pretreated has already removed most of the harmful substances and pollutants before entering the ozone destruction catalyst, allowing the catalyst to more effectively convert target gases, maintaining high catalytic activity and stability. In contrast, untreated exhaust gas may contain high concentrations of pollutants, which can have adverse effects on the catalyst, leading to decreased activity or deactivation, affecting the long-term stability of exhaust gas treatment and equipment operation.

In conclusion, pretreating exhaust gas can significantly improve the efficiency and performance of ozone destruction catalysts, reduce operation and maintenance costs, extend the lifespan of equipment, and is an important step to ensure the normal operation of the catalyst and significant purification effects of exhaust gas.

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