| People | Locations | Statistics |
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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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Kumar, Praveen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Green Synthesis of CuO/ZnO Nanocomposites using Ficus Drupacea: In‐Vitro Antibacterial and Cytotoxicity Analysiscitations
- 2023Influence of the Ge content on the lithiation process of crystalline Si 1− x Ge x nanoparticle-based anodes for Li-ion batteriescitations
- 2023A comprehensive review on the mechanical, physical, and thermal properties of abaca fibre for their introduction into structural polymer compositescitations
- 2023Intensifying levulinic acid hydrogenation using mechanochemically prepared copper on manganese oxide catalystscitations
- 2022(De)Lithiation and Strain Mechanism in Crystalline Ge Nanoparticlescitations
- 2022Insights into selective hydrogenation of levulinic acid using copper on manganese oxide octahedral molecular sievescitations
- 2021High energy density lithium-battery anode materials based on graphite-silicon nanowire composites
- 2020Multi-scale quantification and modeling of aged nanostructured silicon-based composite anodescitations
- 2018Effect of nanocrystals concentration on optical and luminescent properties of PVK:ZnSe nanocompositescitations
- 2018Synthesis and photoluminescence spectra of CdS and CdS/ZnO doped PVK nanocomposite filmscitations
- 2017Resolving the strength-ductility paradox through severe plastic deformation of a cast Al-7% Si alloycitations
- 2016Effect of Ni content on the diffusion-controlled growth of the product phases in the Cu(Ni)-Sn systemcitations
- 2014A critical examination of the paradox of strength and ductility in ultrafine-grained metalscitations
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article
Intensifying levulinic acid hydrogenation using mechanochemically prepared copper on manganese oxide catalysts
Abstract
A series of copper nanoparticles supported on manganese oxide octahedral molecular sieves (OMS-2) were prepared using mechanochemical (Ball-Mill) and conventional wet-impregnation (Wet-Imp) methods. All catalysts prepared were thoroughly characterized using ICP-OES elemental analysis, X-ray diffraction (XRD), N<sub>2</sub> sorption, H<sub>2</sub> temperature programmed reduction (TPR) and transmission electron microscopy (TEM) techniques. The catalyst preparation methods greatly affected the size of the Cu nanoparticles. TEM images showed that 5 wt% Cu/OMS-2 (Ball-Mill) catalyst had a narrow particle size distribution with an average Cu nanoparticle size of 2.1 nm, while the corresponding 5 wt% Cu/OMS-2 catalyst prepared using wet-impregnation method had an average Cu nanoparticle size of 19.2 nm. The structural features of the catalysts were corelated with the catalytic activity using the liquid phase hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL), as an exemplar process. In LA hydrogenation at 190 °C and 20 bar H<sub>2</sub> pressure, the ball milled catalysts achieved higher LA conversion, and greater GVL yield, as compared to the corresponding catalysts prepared by wet-impregnation method, reinforcing that Cu nanoparticle size and metal dispersion are important tool to intensify the catalytic activity. For instance, 5 wt% Cu/OMS-2 (Ball-Mill) catalyst achieved almost twice the turnover frequency (TOF), 24.7 h<sup>−1</sup> as compared to the 5 wt% Cu/OMS-2 (Wet-Imp) catalyst, TOF 11.8 h<sup>−1</sup>, under identical reaction conditions. The results of this study demonstrate that ball milling is a superior method for Cu/OMS-2 catalyst preparation than wet impregnation.<br/><br/><br/>