Precious Metal Catalysts

Precious metal catalyst is a precious metal material that can change the rate of chemical reactions without participating in the final product of the reaction. Almost all precious metals can be used as catalysts, but commonly used are platinum, palladium, rhodium, silver, ruthenium, etc. Among them, platinum and rhodium are the most widely used. Their d-electron orbitals are not fully filled, their surfaces are prone to adsorbing reactants, and their strength is moderate, which is conducive to the formation of intermediate "active compounds". They have high catalytic activity, as well as comprehensive excellent properties such as high temperature resistance, oxidation resistance, and corrosion resistance, making them the most important catalyst materials.