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Bimetallic PdAu catalysts within hierarchically porous architectures for aerobic oxidation of benzyl alcohol

DOI: 10.3390/nano11020350 DOI Help

Authors: Priyanka Verma (University of Southampton) , Matthew E. Potter (University of Southampton) , Alice E. Oakley (University of Southampton) , Panashe M. Mhembere (University of Southampton) , Robert Raja (University of Southampton)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nanomaterials , VOL 11

State: Published (Approved)
Published: February 2021
Diamond Proposal Number(s): 19850

Open Access Open Access

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

Journal Keywords: noble metal nanoparticles; alcohol oxidation; bimetallic nanoparticles; hierarchically porous materials

Subject Areas: Chemistry, Materials


Instruments: B18-Core EXAFS

Other Facilities: HarwellXPS

Documents:
nanomaterials-11-00350-v2.pdf

Discipline Tags:

Catalysis Physical Chemistry Material Sciences Nanoscience/Nanotechnology Chemistry

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS)