Catalytic reactions are chemical processes that speed up the rate of a reaction without being consumed in the process. A catalyst, which can be a substance like an enzyme or a metal, lowers the activation energy needed for the reaction to occur. This means that the reactants can transform into products more quickly and efficiently. In many industrial applications, catalytic reactions are essential for producing chemicals, fuels, and pharmaceuticals. For example, in the Haber process, a catalyst is used to synthesize ammonia from nitrogen and hydrogen gases. This process is crucial for creating fertilizers that support global agriculture.