Catalytic oxidation of glucose over highly stable AuxPdy NPs immobilised on ceria nanorods

Motaz Khawaji; Ines Graca; Ecaterina Ware; David Chadwick

doi:10.1016/j.cattod.2020.05.012

Catalytic oxidation of glucose over highly stable Au_xPd_y NPs immobilised on ceria nanorods

Motaz Khawaji, Ines Graca, Ecaterina Ware, David Chadwick^* (Corresponding Author)

^*Corresponding author for this work

Engineering

Imperial College London

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

2 Downloads (Pure)

Abstract

The catalytic performance of AuxPdy nanoparticles prepared by colloidal synthesis and immobilised on ceria nanorods (Ce-NR) in the selective oxidation of glucose has been studied under initially basic and relatively mild conditions. Activity was found to be strongly dependent on the bimetallic composition with Au-rich catalysts being more active in glucose oxidation. Catalyst recycling revealed
negligible deactivation or metal loss from leaching, and continuing high selectivity to gluconic acid (≥97.7%). Defects on the Ce-NR surface appear to serve as anchoring sites for Au-Pd NPs giving rise to small and very stable NPs.

Original language	English
Pages (from-to)	257-264
Number of pages	8
Journal	Catalysis Today
Volume	365
Early online date	11 May 2020
DOIs	https://doi.org/10.1016/j.cattod.2020.05.012
Publication status	Published - 1 Apr 2021

Bibliographical note

Acknowledgement
Motaz Khawaji gratefully acknowledges the financial support of Saudi Aramco. This work was funded in part by Saudi Aramco and EPSRC(UK) grant EP/K014749/1. We are grateful to Professor Graham Hutchings and Dr. Robert Armstrong from Cardiff Catalysis Institute for providing us with a
sample of glucaric acid.

Keywords

glucose
gold-palladium
ceria
oxidation
gluconic acid
Gluconic acid
Ceria
Gold-Palladium
Oxidation
Glucose

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© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Accepted author manuscript, 1.54 MBLicence: CC BY-NC-ND

Cite this

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title = "Catalytic oxidation of glucose over highly stable AuxPdy NPs immobilised on ceria nanorods",

abstract = "The catalytic performance of AuxPdy nanoparticles prepared by colloidal synthesis and immobilised on ceria nanorods (Ce-NR) in the selective oxidation of glucose has been studied under initially basic and relatively mild conditions. Activity was found to be strongly dependent on the bimetallic composition with Au-rich catalysts being more active in glucose oxidation. Catalyst recycling revealednegligible deactivation or metal loss from leaching, and continuing high selectivity to gluconic acid (≥97.7%). Defects on the Ce-NR surface appear to serve as anchoring sites for Au-Pd NPs giving rise to small and very stable NPs.",

keywords = "glucose, gold-palladium, ceria, oxidation, gluconic acid, Gluconic acid, Ceria, Gold-Palladium, Oxidation, Glucose",

author = "Motaz Khawaji and Ines Graca and Ecaterina Ware and David Chadwick",

note = "Acknowledgement Motaz Khawaji gratefully acknowledges the financial support of Saudi Aramco. This work was funded in part by Saudi Aramco and EPSRC(UK) grant EP/K014749/1. We are grateful to Professor Graham Hutchings and Dr. Robert Armstrong from Cardiff Catalysis Institute for providing us with a sample of glucaric acid.",

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AU - Khawaji, Motaz

AU - Graca, Ines

AU - Ware, Ecaterina

AU - Chadwick, David

N1 - Acknowledgement Motaz Khawaji gratefully acknowledges the financial support of Saudi Aramco. This work was funded in part by Saudi Aramco and EPSRC(UK) grant EP/K014749/1. We are grateful to Professor Graham Hutchings and Dr. Robert Armstrong from Cardiff Catalysis Institute for providing us with a sample of glucaric acid.

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AB - The catalytic performance of AuxPdy nanoparticles prepared by colloidal synthesis and immobilised on ceria nanorods (Ce-NR) in the selective oxidation of glucose has been studied under initially basic and relatively mild conditions. Activity was found to be strongly dependent on the bimetallic composition with Au-rich catalysts being more active in glucose oxidation. Catalyst recycling revealednegligible deactivation or metal loss from leaching, and continuing high selectivity to gluconic acid (≥97.7%). Defects on the Ce-NR surface appear to serve as anchoring sites for Au-Pd NPs giving rise to small and very stable NPs.

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