Exploring the Impact of Bi Content in Nanostructured Pd-Bi Catalysts Used for Selective Oxidation of Glucose: Synthesis, Characterization and Catalytic Properties
| Parent link: | Inorganics.— .— Basel: MDPI AG Vol. 13, iss. 6.— 2025.— Article number 205, 19 p. |
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| その他の著者: | , , , , , , , , , , |
| 要約: | Title screen This work is devoted to the study of the effect of small Bi additives on the functional properties of Pdx:Bi/Al2O3 catalysts in the selective oxidation of glucose to gluconic acid. The catalysts obtained by the joint impregnation method were characterized (TEM) by high dispersion of bimetallic nanoparticles with a median diameter of 4–5 nm. The structure of the Pd-Bi solid solution was confirmed via XPS and showed a change in the valence state of Pd and Bi depending on the Bi content, as well as the fraction of the oxidized state of Bi. TPR-H2 revealed various forms of Pd, including PdO and mixed Pd-O-Bi structures. The Pd10:Bi1/Al2O3 catalyst demonstrated the highest efficiency (77.2% glucose conversion, 96% sodium gluconate selectivity), which is due to the optimal ratio between Pd and Bi, ensuring the stabilization of metallic Pd and preventing its oxidation Текстовый файл |
| 出版事項: |
2025
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| オンライン･アクセス: | https://doi.org/10.3390/inorganics13060205 |
| フォーマット: | 電子媒体 図書の章 |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=681301 |
| 要約: | Title screen This work is devoted to the study of the effect of small Bi additives on the functional properties of Pdx:Bi/Al2O3 catalysts in the selective oxidation of glucose to gluconic acid. The catalysts obtained by the joint impregnation method were characterized (TEM) by high dispersion of bimetallic nanoparticles with a median diameter of 4–5 nm. The structure of the Pd-Bi solid solution was confirmed via XPS and showed a change in the valence state of Pd and Bi depending on the Bi content, as well as the fraction of the oxidized state of Bi. TPR-H2 revealed various forms of Pd, including PdO and mixed Pd-O-Bi structures. The Pd10:Bi1/Al2O3 catalyst demonstrated the highest efficiency (77.2% glucose conversion, 96% sodium gluconate selectivity), which is due to the optimal ratio between Pd and Bi, ensuring the stabilization of metallic Pd and preventing its oxidation Текстовый файл |
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| DOI: | 10.3390/inorganics13060205 |