Stability tests can be broadly categorized into several types:
Thermal Stability Tests: Evaluate how well the catalyst withstands high temperatures. Chemical Stability Tests: Assess the catalyst's resistance to chemical attacks, such as oxidation or poisoning. Mechanical Stability Tests: Determine the catalyst's ability to withstand physical stresses like abrasion or pressure changes. Hydrothermal Stability Tests: Specific to catalysts used in aqueous environments, evaluating their resistance to decomposition or leaching.