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  • Selective glucose oxidation to glucaric acid using bimetallic catalysts [Elektronski vir] : lattice expansion or electronic structure effect?
    Lavrič, Žan ...
    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.
    Source: Applied catalysis [Elektronski vir]. B, Environmental.. - ISSN 1873-3883 (Vol. 343,, [article no.] 123455, Apr. 2024, str. 1-15)
    Type of material - e-article ; adult, serious
    Publish date - 2024
    Language - english
    COBISS.SI-ID - 172057091

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S0926337323010986?via%3Dihub
    DiRROS - Digital repository of Slovenian research organizations
    DOI

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