Can aluminum be used as a catalyst in chemical reactions?

Aluminum is not typically used as a catalyst in chemical reactions. Catalysts are substances that increase the rate of a chemical reaction without being consumed in the process. Aluminum, being a metal, does not have the properties necessary to act as a catalyst in most reactions. However, it can be used in certain reactions as a reducing agent or in the form of organoaluminum compounds, which may participate in catalytic processes, but these are not common applications.