Platinum-cluster-containing cubic mesoporous material (Pt-MCM-48) has been synthesized by direct introduction of chloroplatinic acid during the synthesis of MCM-48. In addition, we have also studied the incipient wetness impregnation and ion-exchange method to obtain the platinum-containing cubic mesoporous material. The nature of the platinum-MCM-48 catalyst has been characterized by different techniques such as XRD, N-2 adsorption, TEM, XPS, and NMR. The catalyst obtained by direct introduction of platinum in the synthesis gel shows higher activity in the hydrogenation of benzene and toluene.