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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Trinkies, Laura L.
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Publications (2/2 displayed)
- 2024In Situ Performance Monitoring of Electrochemical Oxygen and Hydrogen Peroxide Sensors in an Additively Manufactured Modular Microreactorcitations
- 2024Deposition of Pd, Pt, and PdPt Nanoparticles on TiO$_2$ Powder Using Supercritical Fluid Reactive Deposition: Application in the Direct Synthesis of H$_2$O$_2$citations
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article
Deposition of Pd, Pt, and PdPt Nanoparticles on TiO$_2$ Powder Using Supercritical Fluid Reactive Deposition: Application in the Direct Synthesis of H$_2$O$_2$
Abstract
In this study, we investigated the catalytic properties of mono- and bimetallic palladium(Pd) and platinum (Pt) nanoparticles deposited via supercritical fluid reactive deposition (SFRD)on titanium dioxide (TiO$_2$) powder. Transmission electron microscopy analyses verified that SFRDexperiments performed at 353 K and 15.6 MPa enabled the deposition of uniform mono- and bimetallicnanoparticles smaller than 3 nm on TiO$_2$. Electron-dispersive X-ray spectroscopy demonstratedthe formation of alloy-type structures for the bimetallic PdPt nanoparticles. H$_2$O$_2$ is an excellentoxidizing reagent for the production of fine and bulk chemicals. However, until today, the designand preparation of catalysts with high H$_2$O$_2$selectivity and productivity remain a great challenge.The focus of this study was on answering the questions of (a) whether the catalysts produced aresuitable for the direct synthesis of hydrogen peroxide (H$_2$O$_2$) in the liquid phase and (b) how themetal type affects the catalytic properties. It was found that the metal type (Pd or Pt) influencedthe catalytic performance strongly; the mean productivity of the mono- and bimetallic catalystsdecreased in the following order: Pd > PdPt > Pt. Furthermore, all catalysts prepared by SFRDshowed a significantly higher mean productivity compared to the catalyst prepared by incipientwetness impregnation.