Which catalyst is used in the industrial preparation of ammonia by the Haber process?

💡 Solution & Explanation

The industrial synthesis of ammonia via the Haber process utilizes finely divided iron as a catalyst alongside promoters like potassium oxide and aluminum oxide to accelerate the reaction rate. Alternative catalysts such as vanadium pentoxide or nickel are utilized in distinct industrial reactions like the Contact process for sulfuric acid or hydrogenation of oils.