Several factors contribute to limited control in catalytic processes. These include:
Complex reaction mechanisms: Catalytic reactions often involve multiple steps and intermediates, making it difficult to predict and control the outcome. Temperature and pressure sensitivity: Catalysts may have narrow operational windows, and small deviations can lead to significant changes in reaction behavior. Catalyst deactivation: Catalysts can lose activity over time due to poisoning, fouling, or sintering, complicating the control of long-term processes. Mass transfer limitations: In heterogeneous catalysis, the transport of reactants to the active sites and the removal of products can be rate-limiting, affecting overall control.