1. Durability Assessment: It helps in understanding how long a catalyst can maintain its activity and selectivity under operational conditions. 2. Economic Viability: The longevity of a catalyst directly impacts the cost-effectiveness of a catalytic process. 3. Performance Optimization: Insights from TOS testing allow for the optimization of process conditions to enhance the lifespan and efficiency of the catalyst. 4. Safety Considerations: Continuous operation without catalyst failure is essential for the safe operation of industrial processes.