A catalyst's robustness refers to its ability to maintain its structure and activity under harsh conditions, including high temperatures, varying pressures, and the presence of reactive intermediates or poisons. Durability, on the other hand, pertains to the catalyst's longevity and resistance to deactivation over time. Factors contributing to these qualities include:
Chemical stability: Resistance to oxidation, reduction, and other chemical changes. Thermal stability: Ability to withstand high temperatures without significant structural changes. Mechanical stability: Resistance to physical degradation such as attrition and sintering. Resistance to poisoning: Ability to resist deactivation by impurities or reaction by-products.
