Selective glucose oxidation to glucaric acid using bimetallic catalysts: Lattice expansion or electronic structure effect?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00578834" target="_blank" >RIV/61388955:_____/24:00578834 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0347751" target="_blank" >https://hdl.handle.net/11104/0347751</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apcatb.2023.123455" target="_blank" >10.1016/j.apcatb.2023.123455</a>

Result language
angličtina
Original language name
Selective glucose oxidation to glucaric acid using bimetallic catalysts: Lattice expansion or electronic structure effect?
Original language description
Our study presents a comprehensive approach for the selective oxidation of glucose to glucaric acid (GA) by heterogeneous catalysis. We have synthesized and characterized Au/ZrO2, AuCu/ZrO2 and AuPt/ZrO2 catalysts using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and oxygen pulse chemisorption (OPS) techniques. Combining experimental observations with in-depth density functional theory (DFT) studies, we found that bimetallic catalysts form alloys, which exhibit different characteristics than monometallic counterparts for the given reaction. We performed batch reactions, varying temperature and oxygen pressure, and used the data to construct a predictive microkinetic model. As it turned out, AuPt/ZrO2 showed the highest selectivity, yielding 32% of GA at 100 °C and 30 barg O2. Our results provide valuable insights for the developing of efficient catalysts and point out the bottlenecks for the oxidation of glucose to GA.
Czech name
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Czech description
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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

Project
<a href="/en/project/GF21-48595L" target="_blank" >GF21-48595L: Utilization of waste biomass for catalytic conversion to glucaric acid: from multiscale reaction modelling to reactor production</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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