Bimetallic PdAu catalysts within hierarchically porous architectures for aerobic oxidation of benzyl alcohol
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 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.
alcohol oxidation, bimetallic nanoparticles, hierarchically porous materials, noble metal nanoparticles
Verma, Priyanka
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Potter, Matthew
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Oakley, Alice Elizabeth
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Mhembere, Panashe Michael
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Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
1 February 2021
Verma, Priyanka
a826bc8d-272c-4a8b-82ae-2d86affd497f
Potter, Matthew
34dee7dc-2f62-4022-bb65-fc7b7fb526d2
Oakley, Alice Elizabeth
78ad819d-33bb-4c77-af90-9dcc96ed52e0
Mhembere, Panashe Michael
f087e7a4-eb4e-4578-8f7a-3c2d8b92f8ce
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
Verma, Priyanka, Potter, Matthew, Oakley, Alice Elizabeth, Mhembere, Panashe Michael and Raja, Robert
(2021)
Bimetallic PdAu catalysts within hierarchically porous architectures for aerobic oxidation of benzyl alcohol.
Nanomaterials, 11 (2), [350].
(doi:10.3390/nano11020350).
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.
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Bimetallic PdAu Catalysts
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Accepted/In Press date: 26 January 2021
Published date: 1 February 2021
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Funding Information:
Funding: This research was funded by THE ROYAL SOCIETY, grant number NIF\R1\180185.
Funding Information:
This research was funded by THE ROYAL SOCIETY, grant number NIF\R1\180185. P.V. acknowledges The Royal Society for the Newton International Fellowship (NIF\R1\180185). P.M.P. acknowledges AdvanSix and Honeywell LLC for financial support. We thank Matthew Cooper at the National Oceanography Centre, University of Southampton for his assistance in ICP analysis. The authors acknowledge the Diamond Light Source, Didcot, UK for XAS measurements at B-18 beamline (session ID: SP19850-5). The TEM images were measured at Bioimaging Unit, University Hospital Southampton with the assistance of P.M. Goggin. We acknowledge EPSRC National Facility, HarwellXPS for XPS analysis.
Funding Information:
Acknowledgments: P.V. acknowledges The Royal Society for the Newton International Fellowship (NIF\R1\180185). P.M.P. acknowledges AdvanSix and Honeywell LLC for financial support. We thank Matthew Cooper at the National Oceanography Centre, University of Southampton for his assistance in ICP analysis. The authors acknowledge the Diamond Light Source, Didcot, UK for XAS measurements at B-18 beamline (session ID: SP19850-5). The TEM images were measured at Bioimaging Unit, University Hospital Southampton with the assistance of P.M. Goggin. We acknowledge EPSRC National Facility, HarwellXPS for XPS analysis.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Keywords:
alcohol oxidation, bimetallic nanoparticles, hierarchically porous materials, noble metal nanoparticles
Identifiers
Local EPrints ID: 447447
URI: http://eprints.soton.ac.uk/id/eprint/447447
ISSN: 2079-4991
PURE UUID: 3b04c4aa-09c9-4cf5-9646-cb21f2320bf1
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Date deposited: 11 Mar 2021 17:36
Last modified: 17 Mar 2024 03:07
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Author:
Priyanka Verma
Author:
Alice Elizabeth Oakley
Author:
Panashe Michael Mhembere
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