Bimetallic PdAu Catalysts within Hierarchically Porous Architectures for Aerobic Oxidation of Benzyl Alcohol

Hierarchically porous (HP) zeotype materials (possessing both micropores and mesopores) offer improved diffusional access to intra-framework active sites, analogous mesoporous materials, yet retain the high selectivity of microporous (MP) bulk. We have recently designed crystalline hierarchically silicoaluminophosphates (SAPOs) with enhanced mass-transport characteristics, which can lead significant improvement in catalytic activity catalyst lifetime. In this study, we prepared PdAu bimetallic nanostructures supported on HP-SAPO frameworks by an incipient impregnation metal precursors followed H2 reduction at 300 °C, for aerobic oxidation benzyl alcohol benzaldehyde. NPs HP framework displayed significantly activities, when compared their MP analogues, clearly highlighting benefits introducing hierarchical porosity SAPO support matrix.