Catalytic hydrogenation of benzene produces cyclohexane. In this reaction, benzene reacts with hydrogen gas in the presence of a catalyst to form cyclohexane. The catalyst used is usually a metal, such as platinum or palladium, which helps to break the double bonds in the benzene ring and allow the hydrogen gas to attach to the carbons, forming a cyclohexane ring. Cyclohexane is a cyclic hydrocarbon with the formula C6H12 and is commonly used as a solvent and in the production of nylon.