The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type Phosphomolybdates
Polyoxometalates are a promising family of compounds for the development of new catalyst materials, although up to now they have mainly been applied in acid catalysis and oxidative processes. In this study, we present the synthesis and characterisation of two new Keggin-type phosphomolybdates, H<...
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2025-05-01
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| author | Max Papajewski Jan-Christian Raabe Hamid Anwari Dorothea Voß Jakob Albert Maximilian J. Poller |
| author_facet | Max Papajewski Jan-Christian Raabe Hamid Anwari Dorothea Voß Jakob Albert Maximilian J. Poller |
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| description | Polyoxometalates are a promising family of compounds for the development of new catalyst materials, although up to now they have mainly been applied in acid catalysis and oxidative processes. In this study, we present the synthesis and characterisation of two new Keggin-type phosphomolybdates, H<sub>6</sub>[PRuMo<sub>11</sub>O<sub>40</sub>] and H<sub>9</sub>[PRu<sub>2</sub>Mo<sub>10</sub>O<sub>40</sub>]. The successful synthesis was confirmed with ICP-OES (elemental composition) and infrared spectroscopy (structure). Furthermore, the molecular structure of H<sub>6</sub>[PRuMo<sub>11</sub>O<sub>40</sub>] was determined by electron diffraction. The new compounds were comprehensively characterised using <sup>31</sup>P-NMR spectroscopy, UV-Vis spectroscopy, and electrochemical methods. Square-Wave-Voltammetry revealed an additional RedOx peak for the Ru-substituted POMs compared to the unsubstituted phosphomolybdate at around 825 mV. In a test reaction, the new compounds showed promising catalytic activity for the hydrogenation of lactic acid. |
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| publishDate | 2025-05-01 |
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| spelling | doaj-art-facefe576dcb4f318102d828a1d67d1c2025-08-20T03:24:39ZengMDPI AGInorganics2304-67402025-05-0113617610.3390/inorganics13060176The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type PhosphomolybdatesMax Papajewski0Jan-Christian Raabe1Hamid Anwari2Dorothea Voß3Jakob Albert4Maximilian J. Poller5Institute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, GermanyInstitute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, GermanyInstitute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, GermanyInstitute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, GermanyInstitute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, GermanyInstitute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, GermanyPolyoxometalates are a promising family of compounds for the development of new catalyst materials, although up to now they have mainly been applied in acid catalysis and oxidative processes. In this study, we present the synthesis and characterisation of two new Keggin-type phosphomolybdates, H<sub>6</sub>[PRuMo<sub>11</sub>O<sub>40</sub>] and H<sub>9</sub>[PRu<sub>2</sub>Mo<sub>10</sub>O<sub>40</sub>]. The successful synthesis was confirmed with ICP-OES (elemental composition) and infrared spectroscopy (structure). Furthermore, the molecular structure of H<sub>6</sub>[PRuMo<sub>11</sub>O<sub>40</sub>] was determined by electron diffraction. The new compounds were comprehensively characterised using <sup>31</sup>P-NMR spectroscopy, UV-Vis spectroscopy, and electrochemical methods. Square-Wave-Voltammetry revealed an additional RedOx peak for the Ru-substituted POMs compared to the unsubstituted phosphomolybdate at around 825 mV. In a test reaction, the new compounds showed promising catalytic activity for the hydrogenation of lactic acid.https://www.mdpi.com/2304-6740/13/6/176polyoxometalatesphosphomolybdaterutheniumself-assemblycatalysis |
| spellingShingle | Max Papajewski Jan-Christian Raabe Hamid Anwari Dorothea Voß Jakob Albert Maximilian J. Poller The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type Phosphomolybdates Inorganics polyoxometalates phosphomolybdate ruthenium self-assembly catalysis |
| title | The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type Phosphomolybdates |
| title_full | The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type Phosphomolybdates |
| title_fullStr | The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type Phosphomolybdates |
| title_full_unstemmed | The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type Phosphomolybdates |
| title_short | The Synthesis and Characterisation of Ru(III)-Substituted Keggin-Type Phosphomolybdates |
| title_sort | synthesis and characterisation of ru iii substituted keggin type phosphomolybdates |
| topic | polyoxometalates phosphomolybdate ruthenium self-assembly catalysis |
| url | https://www.mdpi.com/2304-6740/13/6/176 |
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