2. How do Wall Effects Influence Catalytic Reactions?
Wall effects can influence catalytic reactions in several ways:
- Diffusion Limitations: Near the reactor walls, the diffusion of reactants and products can be limited, affecting the overall reaction rate. This is particularly significant in heterogeneous catalysis where mass transfer resistance can play a critical role. - Heat Transfer: The walls of the reactor can either absorb or release heat, which can alter the local temperature and consequently, the reaction kinetics. This is especially important in exothermic and endothermic reactions. - Flow Dynamics: The flow profile near the walls can differ from the bulk flow, leading to variations in reactant concentration and residence time. This can affect the selectivity and yield of the desired products.
