1、Definition of environmental protection catalysts Environmental protection catalysts are catalysts used to protect and improve the surrounding environment by treating toxic and hazardous substances in a direct or indirect way to make them harmless or reduce them. In a broad sense, the scope of envi

No catalyst can catalyze water into oil because catalysts can only catalyze reactions that can actually occur, and they cannot help with reactions that cannot occur in the first place. For example, the ammonia reaction and the oxidation of sulfur dioxide are reactions that can actually occur, but in general these reactions proceed more slowly, so they need the help of a catalyst.

Ice-forming agents are mainly used for cold cloud catalytic operations from -6℃ to 20℃. Silver iodide (AgI) is the most commonly used and effective ice-forming agent because its crystal structure is similar to that of ice crystals, and it is highly effective in making ice crystals. Silver iodide forms extremely large and fine silver iodide particles in the air through combustion or explosion, and 1 gram of silver iodide can produce more than 1000 ice nuclei.

Anti-toxic stability: The ability of catalyst to resist deactivation of adsorbed active poisons is called anti-toxic stability, these poisons refer to compounds containing sulfur, phosphorus, halogens and arsenic, which may be impurities in raw materials, or by-products or intermediate compounds produced in the reaction; various catalysts have different anti-toxic resistance to various harmful impurities, and the same catalyst has different anti-toxic resistance to the same impurity under different reaction conditions.

Although the definition of catalyst is that the catalyst will not be consumed during the chemical reaction, the catalyst will maintain its original chemical state before and after the reaction and will continue to play a catalytic role.

Catalysts are subject to a variety of factors during use and can lose their activity either sharply or slowly. The causes of catalyst deactivation are complex. They can be summarized into some categories as follows.