What are the benefits of using graphite for precious metals?

Graphite for precious metals has the following advantages:

1. Good high-temperature oxidation and corrosion resistance. Graphite has good oxidation and corrosion resistance under high temperature conditions, which can effectively prevent precious metals such as palladium and platinum from oxidation and corrosion under high temperature reaction conditions, and extend their service life.

2. Good carrier effect at high temperature. Graphite can provide support for tiny particles of precious metals under high temperature conditions, prevent their agglomeration and growth, and keep them in a highly dispersed state, thereby exerting higher catalytic activity. This effect is called carrier effect.

3. Good chemical inertness and thermal stability. Graphite has high chemical inertness and thermal stability, and can be used stably for a long time under harsh chemical reaction conditions and high temperature environments without obvious changes in structure and performance.

4. High electrical conductivity. Graphite has high electrical conductivity, which is conducive to the migration and transfer of electrons, can improve the catalytic activity of precious metals, especially in electrocatalytic reactions.

5. High specific surface area. Graphite has a developed porous structure and high specific surface area, which is conducive to the contact between precious metals and reactants, thereby improving reaction activity and selectivity.

6. Low cost. Graphite is a natural mineral resource, and the cost of large-scale production of graphite products is low, which is conducive to the commercialization of precious metal catalysts and other applications. Therefore, graphite is an ideal precious metal carrier material, which can give precious metals excellent catalytic performance and long-term stability, and is expected to be widely used in automobile exhaust purification, fuel cells and chemical industry.

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