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Selective glucose oxidation to glucaric acid using bimetallic catalysts: Lattice expansion or electronic structure effect?
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SYSNO ASEP 0578834 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Selective glucose oxidation to glucaric acid using bimetallic catalysts: Lattice expansion or electronic structure effect? Author(s) Lavrič, Ž. (SI)
Teržan, J. (SI)
Kroflič, A. (SI)
Zavašnik, J. (SI)
Olszówka, Joanna Elżbieta (UFCH-W) ORCID
Vajda, Štefan (UFCH-W) RID, ORCID
Huš, M. (SI)
Grilc, M. (SI)
Likozar, B. (SI)Article number 123455 Source Title Applied Catalysis B - Environmental. - : Elsevier - ISSN 0926-3373
Roč. 343, APR 2024 (2024)Number of pages 15 s. Language eng - English Country NL - Netherlands Keywords glucaric acid ; glucose oxidation ; catalyst characterization ; DFT Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GF21-48595L GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UFCH-W - RVO:61388955 UT WOS 001118493200001 EID SCOPUS 85178013559 DOI 10.1016/j.apcatb.2023.123455 Annotation 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. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2025 Electronic address https://hdl.handle.net/11104/0347751
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