Developing a simplified model involves several steps: 1. Identify Key Features: Determine the most important aspects of the catalytic system you want to study. 2. Make Assumptions: Simplify the system by making reasonable assumptions. For instance, assume steady-state conditions or neglect minor side reactions. 3. Mathematical Formulation: Use mathematical equations to describe the simplified system. This could involve differential equations for kinetic models or algebraic equations for thermodynamic models. 4. Validation: Compare the model predictions with experimental data to validate its accuracy.