The carrier not only provides a large surface area but also affects the activity and selectivity of the active components of the catalyst and may even catalyze the reaction itself. The carrier must maintain its surface area to prevent particle agglomeration even at high temperatures. The carrier must be protected from thermal growth, which means a high melting point (at least higher than one of the active ingredients).

Activated alumina, is widely used in the catalyst industry due to its unique properties and versatility. Activated alumina is a commonly used catalyst support material due to its high surface area, porosity, and thermal stability. It provides a large surface area for the catalytic active component to be dispersed and supported, enhancing the catalyst’s performance. Activated alumina supports are used in a variety of catalytic processes, such as hydrocracking, reforming, and petrochemical production.

Activated alumina can be used as an adsorbent within catalysts to remove impurities or selectively adsorb certain molecules. This helps to improve the catalyst’s performance and prevent deactivation. In sulfur removal catalysts, activated alumina is used to adsorb sulfur compounds, protecting the active catalyst component. Activated alumina can be used as a precursor material for the synthesis of other catalytic materials, such as transition metal-doped alumina catalysts. The high surface area and porous structure of activated alumina provide a suitable platform for the deposition and incorporation of active catalytic components.