Detecting hot spots is crucial for optimizing catalytic processes. Several techniques are employed: 1. Thermocouples: Embedded thermocouples can provide point measurements of temperature within the reactor. 2. Infrared Thermography: This technique allows for non-invasive, real-time mapping of temperature distributions on the catalyst surface. 3. Computational Fluid Dynamics (CFD): CFD simulations can predict temperature profiles and identify potential hot spots within the reactor.