Define the Objective: Clearly outline what you aim to achieve with the tracer study. Are you looking to understand the reaction mechanism, measure conversion rates, or study diffusion? Review Literature: Consult existing studies and research papers to identify commonly used tracers for similar catalytic systems. Evaluate Compatibility: Assess the compatibility of potential tracers with your specific catalytic system, including the catalyst, reactants, and reaction conditions. Conduct Preliminary Tests: Perform initial experiments to test the tracer's behavior and stability within the system. Optimize Detection Method: Ensure that the detection method for the tracer is well-optimized to provide accurate and reliable data.