Overview of Heterogeneous Catalysis

Heterogeneous catalysts, also known as heterogeneous catalysts, are used in reactions of different phases, that is, in different states from the reactants they catalyze. For example: in the production of margarine, unsaturated vegetable oil and hydrogen can be converted into saturated fat through solid nickel (catalyst). Solid nickel is a heterogeneous catalyst, and the reactants catalyzed by it are liquid (vegetable oil) and gaseous (hydrogen). A simple heterogeneous catalysis reaction involves the adsorption of reactants (or zh-ch: substrate; zh-tw: substrate) on the surface of the catalyst, the bonds in the reactants are broken and new bonds are generated, but the Because the bond between the product and the catalyst is not strong, the product is released from the reaction site and other processes. Many different structures of adsorption and reaction on the surface of catalysts are known.