catalyzer

A catalyzer is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. This phenomenon is known as catalysis. Catalyzers work by providing an alternative reaction pathway that has a lower activation energy. This means that less energy is required for the reaction to occur, leading to a faster rate. Catalyzers do not affect the equilibrium of a reversible reaction; they only speed up the process of reaching equilibrium.

There are several types of catalyzers. Homogeneous catalyzers are in the same phase as the reactants, such as a liquid catalyst in a liquid reaction. Heterogeneous catalyzers are in a different phase from the reactants, commonly a solid catalyst with gaseous or liquid reactants. Enzymes are biological catalyzers, typically proteins, that play crucial roles in biochemical reactions within living organisms.

Catalyzers are essential in many industrial processes, including the production of ammonia, sulfuric acid, and plastics. They are also vital in environmental applications, such as catalytic converters in vehicles, which reduce harmful emissions by converting pollutants into less harmful substances. The efficiency and selectivity of a catalyzer are key factors in its effectiveness. Selectivity refers to a catalyzer's ability to promote a specific reaction product over others when multiple reaction pathways are possible. The development of new and improved catalyzers remains an active area of research in chemistry and materials science.