Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition
Palladium–bismuth nanomaterials are used in various chemical applications such detectors, electrodes, and catalysts. Pd-Bi catalysts are attracting widespread interest because these catalysts enable the production of valuable products quickly and efficiently, and are environmentally friendly. Howeve...
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MDPI AG
2024-01-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/14/1/66 |
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| author | Mariya P. Shcherbakova-Sandu Andrey A. Saraev Alexey S. Knyazev Irina A. Kurzina |
| author_facet | Mariya P. Shcherbakova-Sandu Andrey A. Saraev Alexey S. Knyazev Irina A. Kurzina |
| author_sort | Mariya P. Shcherbakova-Sandu |
| collection | DOAJ |
| description | Palladium–bismuth nanomaterials are used in various chemical applications such detectors, electrodes, and catalysts. Pd-Bi catalysts are attracting widespread interest because these catalysts enable the production of valuable products quickly and efficiently, and are environmentally friendly. However, the composition of the catalyst can have a significant impact on its catalytic performance. In this work, we identified a correlation between the composition of the catalyst and its efficiency in converting glucose into sodium gluconate. It was found that the conversion decreases with increasing bismuth content. The most active catalyst was the 0.35Bi:Pd sample with a lower bismuth content (glucose conversion of 57%). TEM, SEM, EXAFS, and XANES methods were used to describe, in detail, the surface properties of the xBi:Pd/Al<sub>2</sub>O<sub>3</sub> catalyst samples. The increase in particle size with increasing bismuth content, observed in the TEM micrographs, was associated with the low melting point of bismuth (271 °C). The SEM method showed that palladium and bismuth particles were uniformly distributed over the surface of the support in close proximity to each other, which allowed us to conclude that an alloy of non-stoichiometric composition was formed. The EXAFS and XANES methods established that bismuth was located on the surface of the nanoparticle predominantly in an oxidized state. |
| first_indexed | 2024-03-08T11:02:15Z |
| format | Article |
| id | doaj.art-7d7b117996f142deb702379f72e7a6d6 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-08T11:02:15Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-7d7b117996f142deb702379f72e7a6d62024-01-26T15:41:09ZengMDPI AGCatalysts2073-43442024-01-011416610.3390/catal14010066Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their CompositionMariya P. Shcherbakova-Sandu0Andrey A. Saraev1Alexey S. Knyazev2Irina A. Kurzina3Department of Natural Compounds, Pharmaceutical and Medicinal Chemistry, National Research Tomsk State University, 36 Lenin Ave., 634050 Tomsk, RussiaSynchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, Nikol’skiy Ave., 1, 630559 Kol’tsovo, RussiaLLC “Engineering Chemical Technological Center”, 7 Alekseya Belenca str., 634050 Tomsk, RussiaDepartment of Natural Compounds, Pharmaceutical and Medicinal Chemistry, National Research Tomsk State University, 36 Lenin Ave., 634050 Tomsk, RussiaPalladium–bismuth nanomaterials are used in various chemical applications such detectors, electrodes, and catalysts. Pd-Bi catalysts are attracting widespread interest because these catalysts enable the production of valuable products quickly and efficiently, and are environmentally friendly. However, the composition of the catalyst can have a significant impact on its catalytic performance. In this work, we identified a correlation between the composition of the catalyst and its efficiency in converting glucose into sodium gluconate. It was found that the conversion decreases with increasing bismuth content. The most active catalyst was the 0.35Bi:Pd sample with a lower bismuth content (glucose conversion of 57%). TEM, SEM, EXAFS, and XANES methods were used to describe, in detail, the surface properties of the xBi:Pd/Al<sub>2</sub>O<sub>3</sub> catalyst samples. The increase in particle size with increasing bismuth content, observed in the TEM micrographs, was associated with the low melting point of bismuth (271 °C). The SEM method showed that palladium and bismuth particles were uniformly distributed over the surface of the support in close proximity to each other, which allowed us to conclude that an alloy of non-stoichiometric composition was formed. The EXAFS and XANES methods established that bismuth was located on the surface of the nanoparticle predominantly in an oxidized state.https://www.mdpi.com/2073-4344/14/1/66heterogeneous catalystsPd-Bi catalystsPd-Bi nanoparticlesglucose oxidationsodium gluconatelocal environment |
| spellingShingle | Mariya P. Shcherbakova-Sandu Andrey A. Saraev Alexey S. Knyazev Irina A. Kurzina Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition Catalysts heterogeneous catalysts Pd-Bi catalysts Pd-Bi nanoparticles glucose oxidation sodium gluconate local environment |
| title | Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition |
| title_full | Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition |
| title_fullStr | Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition |
| title_full_unstemmed | Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition |
| title_short | Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition |
| title_sort | pd bi based catalysts for selective oxidation of glucose into gluconic acid the role of local environment of nanoparticles in dependence of their composition |
| topic | heterogeneous catalysts Pd-Bi catalysts Pd-Bi nanoparticles glucose oxidation sodium gluconate local environment |
| url | https://www.mdpi.com/2073-4344/14/1/66 |
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