| Title: | Selective glucose oxidation to glucaric acid using bimetallic catalysts : lattice expansion or electronic structure effect? |
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| Authors: | ID Lavrič, Žan (Author)
ID Teržan, Janvit (Author)
ID Kroflič, Ana (Author)
ID Zavašnik, Janez (Author)
ID Olszówka, Joanna E. (Author)
ID Vajda, Štefan (Author)
ID Huš, Matej (Author)
ID Grilc, Miha (Author)
ID Likozar, Blaž (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0926337323010986?via%3Dihub
 PDF - Presentation file, download (2,73 MB)
MD5: 0ABF682A7B8734861463DC0058D263F5
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  KI - National Institute of Chemistry
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| 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. |
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| Keywords: | glucaric acid, glucose oxidation, catalyst characterization, density functional theory, microkinetic modelling |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.04.2024 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-15 |
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| Numbering: | Vol. 343,, article no. 123455 |
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| Source: | Applied Catalysis B: Environmental |
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| PID: | 20.500.12556/DiRROS-17462  |
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| UDC: | 66 |
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| ISSN on article: | 1873-3883 |
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| DOI: | 10.1016/j.apcatb.2023.123455 |
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| COBISS.SI-ID: | 172057091 |
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| Copyright: | © 2023 The Authors. Published by Elsevier B.V. |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji iz Slovenije: Janvit Teržan, Ana Kroflič, Janez Zavašnik, Matej Huš, Miha Grilc, Blaž Likozar;
Opis vira z dne 14. 11. 2023;
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| Publication date in DiRROS: | 06.12.2023 |
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| Views: | 684 |
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| Downloads: | 297 |
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