Is manganese dioxide a catalyst or an enzyme?

Manganese dioxide can act as a catalyst. By definition, a catalyst acts to speed up a chemical reaction, but is not permanently chemically modified during the chemical reaction. read more

Manganese dioxide can act as a catalyst. By definition, a catalyst acts to speed up a chemical reaction, but is not permanently chemically modified during the chemical reaction. They do this by lowering the activation energy, via several mechanisms, of the chemical reaction. read more

Enzymes and catalysts both affect the rate of a reaction. The difference between catalysts and enzymes is that while catalysts are inorganic compounds, enzymes are largely organic in nature and are bio-catalysts. Even though all known enzymes are catalysts, all catalysts are not enzymes. read more