Publications
| 2024 (4) | 2023 (5) | 2022 (3) | 2021 (5) |
| 2020 (3) | 2019 (12) | 2018 (5) | 2017 (3) |
| 2016 (4) | 2015 (2) | 2014 (4) | 2013 (7) |
| 2012 (7) | 2011 (1) | 2010 (2) | 2008 (1) |
2024 | Articles and Reviews
A Robust Synthesis of Co2P and Ni2P Nanocatalysts from Hexaethylaminophosphine and Phosphine-Enhanced Phenylacetylene Hydrogenation
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We selected a commercial aminophosphine, HETAP, as the phosphorus precursor to develop a robust synthesis crystalline Co2P and Ni2P nanoparticles with high yields on a 9 mmol scale. Moreover, modification of the nanoparticles via the addition of a molecular Lewis base triggered catalytic activity of the colloidal suspension at low temperature for the hydrogenation of phenylacetylene. We delineated the most efficient phosphines in the case of a Ni2P catalyst, using a stereoelectronic map of 13 phosphines. |
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A. Ropp , S. Carenco, Inorg. Chem. 2024, DOI 10.1021/acs.inorgchem.4c02743 |
Les nanoparticules, partenaires de nouvelles paires de Lewis frustrées ?
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Just published in the French journal "L'Actualité chimique": a feature article about our ERC Research program on NanoFLP, or "nanoparticles as partners in Frustrated Lewis Pairs". It describes our recent works on this topic, with a focus on what where ou guidelines and purposes. |
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S. Carenco, L'Actualité Chimique 2024, 496, Juillet-Août |
Operando Monitoring of Homolytic Cleavage of H2 into Surface Hydrides on Defective Cerium Dioxide Nanoparticles
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We designed a low-temperature synthetic route for CeO2 nanorods. We employed near-ambient-pressure X-ray photoelectron spectroscopy to monitor the cerium surface oxidation state during the initial annealing of the nanopowder, followed by exposure to a moderate pressure of H2. We demonstrate that H2 homolytic splitting at cerium sites is the main activation process at 100 °C, leading to the oxidation of 30% of the surface cerium atoms, while the H2 splitting at oxygen sites was absent. |
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R. F. André, J.-J. Gallet, F. Bournel, S. Carenco, ChemCatChem 2024, DOI 10.1002/cctc.202400163. |
Phosphines on Colloidal Nickel Nanocatalysts to Lower the Onset Temperature of Terminal Alkynes Hydrogenation
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We show that phosphines with adequate steric hindrance (e.g., PnBu3 and PiBu3) lower the onset temperature for phenylacetylene hydrogenation by nickel NPs under 7 bar of H2, by ca 10 to 20 °C depending on the NP diameter. This result is of conceptual value because the hydrogenation may have been driven by the frustrated Lewis pair (FLP) between the Lewis basic phosphine and the Lewis acid nickel surface, forming a so-called “NanoFLP”. Moreover, we demonstrated that less than 2 phosphines per Ni surface atom are enough for the effect to arise. We showed that other terminal alkynes, like 1-octyne, can be hydrogenated with this method. |
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K. Azouzi, A. Ropp, S. Carenco, ACS Catalysis 2024, DOI 10.1021/acscatal.4c00054. |
