| 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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Parlett, Cma
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023Use of copper carbonate as corrosion inhibitor for carbon steel in post combustion carbon capturecitations
- 2021Atom efficient PtCu bimetallic catalysts and ultra dilute alloys for the selective hydrogenation of furfuralcitations
- 2019Oxidative Thermal Sintering and Redispersion of Rh Nanoparticles on Supports with High Oxygen Ion Labilitycitations
- 2019Platinum catalysed aerobic selective oxidation of cinnamaldehyde to cinnamic acid
- 2018Delaminated CoAl‐Layered Double Hydroxide@TiO₂ Heterojunction Nanocomposites for Photocatalytic Reduction of CO₂
- 2018NMR cryoporometric measurements of porous silicacitations
- 2018Platinum catalysed aerobic selective oxidation of cinnamaldehyde to cinnamic acidcitations
- 2018Tunable silver-functionalized porous frameworks for antibacterial applicationscitations
- 2017Tunable Ag@SiO2 core–shell nanocomposites for broad spectrum antibacterial applicationscitations
- 2017P25@CoAl layered double hydroxide heterojunction nanocomposites for CO2 photocatalytic reductioncitations
- 2017High activity magnetic core-mesoporous shell sulfonic acid silica nanoparticles for carboxylic acid esterificationcitations
Places of action
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article
Platinum catalysed aerobic selective oxidation of cinnamaldehyde to cinnamic acid
Abstract
Aerobic selective oxidation of allylic aldehydes offers an atom and energy efficient route to unsaturated carboxylic acids, however suitable heterogeneous catalysts offering high selectivity and productivity have to date proved elusive. Herein, we demonstrate the direct aerobic oxidation of cinnamaldehyde to cinnamic acid employing silica supported Pt nanoparticles under base-free, batch and continuous flow operation. Surface and bulk characterisation of four families of related Pt/silica catalysts by XRD, XPS, HRTEM, CO chemisorption and N2 porosimetry evidence surface PtO2 as the common active site for cinnamaldehyde oxidation, with a common turnover frequency of 49,000 ± 600 h−1; competing cinnamaldehyde hydrogenolysis is favoured over metallic Pt. High area mesoporous (SBA-15 or KIT-6) and macroporous-mesoporous SBA-15 silicas confer significant rate and cinnamic acid yield enhancements versus low area fumed silica, due to superior platinum dispersion. High oxygen partial pressures and continuous flow operation stabilise PtO2 active sites against in-situ reduction and concomitant deactivation, further enhancing cinnamic acid productivity.