Synthesis of nanosized platinum cluster in cubic mesoporous material via adirect introduction method

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