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3. Selective glucose oxidation to glucaric acid using bimetallic catalysts : lattice expansion or electronic structure effect?Žan Lavrič, Janvit Teržan, Ana Kroflič, Janez Zavašnik, Joanna E. Olszówka, Štefan Vajda, Matej Huš, Miha Grilc, Blaž Likozar, 2024, original scientific article Abstract: 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. Keywords: glucaric acid, glucose oxidation, catalyst characterization, density functional theory, microkinetic modelling Published in DiRROS: 06.12.2023; Views: 464; Downloads: 207 Full text (2,73 MB) This document has many files! More... |
4. Lignin-based covalent adaptable network polymers─when bio-based thermosets meet recyclable by designDavide Benedetto Tiz, Filipa A. Vicente, Ana Kroflič, Blaž Likozar, 2023, review article Keywords: dynamic covalent bonds, bio-based polymers, lignin, vanillin, eugenol, syringaldehyde Published in DiRROS: 29.09.2023; Views: 564; Downloads: 265 Full text (4,55 MB) This document has many files! More... |
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8. Characterization of fresh PM deposits on calcareous stone surfaces : seasonality, source apportionment and soiling potentialMonika Ogrizek, Asta Gregorič, Matic Ivančič, Daniele Contini, Urša Skube, Kristijan Vidović, Marjan Bele, Martin Šala, Marta Klanjšek Gunde, Martin Rigler, Eva Menart, Ana Kroflič, 2023, original scientific article Published in DiRROS: 24.11.2022; Views: 799; Downloads: 544 Full text (1,40 MB) This document has many files! More... |
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