The complexity in catalyst design arises from a multitude of factors including the choice of catalyst materials, reaction mechanisms, operating conditions, and the desired outcomes. The key factors to consider are:
Material Selection: The choice of material is crucial as it affects the catalyst's activity, selectivity, and stability. Common materials include metals, oxides, and zeolites. Reaction Mechanisms: Understanding the detailed steps of the reaction mechanism helps in designing catalysts that can lower the activation energy and increase the reaction rate. Surface Area and Porosity: A high surface area and appropriate pore size distribution can enhance the accessibility of reactants to active sites. Thermal and Chemical Stability: Catalysts must withstand the operating conditions, which can be harsh, involving high temperatures and corrosive environments.