One of the major applications of ALS in catalysis is the study of heterogeneous catalysts. These catalysts, which are typically solid materials, catalyze reactions in the gas or liquid phase and are used in a wide range of industrial processes. By using ALS, researchers can gain insights into the surface properties, particle size distribution, and active site structure of these catalysts. Another important application is in the area of homogeneous catalysis, where catalysts are in the same phase as the reactants. ALS techniques can help in studying coordination complexes, reaction pathways, and the dynamics of ligand exchange processes.