What Role Does Catalysis Play in Chain Growth Mechanism?
Catalysis plays a crucial role in the chain growth mechanism by enhancing the rate of initiation, propagation, and termination steps. Catalysts can be classified into homogeneous and heterogeneous types, each offering unique advantages.
1. Homogeneous Catalysts: These are catalysts that are in the same phase as the reactants. They provide uniform distribution and better control over the polymerization process. An example is the use of Ziegler-Natta catalysts in the synthesis of polyolefins.
2. Heterogeneous Catalysts: These catalysts are in a different phase than the reactants and are often used for their stability and ease of separation from the reaction mixture. An example is the use of solid acid catalysts in cationic polymerization.
