Microwave-Assisted Oxidation of Glucose Using H2O2 and Au/CePO4 Catalysts: A Comparative Study of Gold Deposition Methods and Analysis of Reaction Pathways
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10504536" target="_blank" >RIV/00216208:11310/25:10504536 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=q2ATCuNCou" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=q2ATCuNCou</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/cctc.202500867" target="_blank" >10.1002/cctc.202500867</a>
Alternative languages
Result language
angličtina
Original language name
Microwave-Assisted Oxidation of Glucose Using H2O2 and Au/CePO4 Catalysts: A Comparative Study of Gold Deposition Methods and Analysis of Reaction Pathways
Original language description
This study aligns with microwave-assisted selective oxidation processes using H2O2 as an environmentally relevant oxidant over heterogeneous gold-based catalysts. The research is focused on assessing the influence of the gold deposition method on the surface properties and catalytic behavior of Au/CePO4 catalysts in the selective oxidation of glucose. A significant part of the study involved also unraveling the nature of active sites and species involved in the oxidation process. For this purpose, three gold deposition methods were applied for the synthesis of Au/CePO4 catalysts, namely deposition-reduction (DR), deposition-precipitation with urea (DPU), and anchoring of gold species on functionalized support (grafting; GR). Au/CePO4-GR was found to significantly outperform the other two materials in terms of H2O2 decomposition efficiency and glucose oxidation. This catalyst enabled highly efficient glucose conversion to gluconic acid in a short reaction time (90% glucose conversion in 20 min, at 120 °C) and could be successfully reused without any significant deactivation. The observed enhancement in the reactivity of Au/CePO4-GR was attributed to its strong surface acidity and the smallest size of gold particles. Furthermore, Au/CePO4-GR exhibited approximately 1.5 times higher activity in glucose oxidation than commercial Au/TiO2 (Mintek), despite its lower efficiency in H2O2 decomposition.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ChemCatChem
ISSN
1867-3880
e-ISSN
1867-3899
Volume of the periodical
17
Issue of the periodical within the volume
19
Country of publishing house
DE - GERMANY
Number of pages
11
Pages from-to
e00867
UT code for WoS article
001550365200001
EID of the result in the Scopus database
2-s2.0-105013457009