Inert material refers to substances that are chemically inactive and do not react with other substances under normal conditions. Inert materials are often used in industrial processes as a support or carrier for catalysts or as a filler material in products like paints, plastics, and adhesives. Such materials are important in many industrial processes because they provide a stable, non-reactive environment for catalysts to perform their function. They also help to improve the physical properties of materials, such as increasing strength, durability, and heat resistance. Overall, inert materials play a critical role in many industries and are essential for the production of a wide range of products.