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2015

Articles:

Escande, Vincent, Petit, Eddy, Garoux, Laetitia, Boulanger, Clotilde and Grison, Claude
ACS Sustainable Chemistry & Engineering,
2015

Resume: A novel Mn-derived catalyst was prepared starting from biomass of Mn-hyperaccumulating plants growing on metal-rich soils. Recovery of this biomass as value-added ?ecocatalysts? provides incentives for the development of phytoextraction programs on soils degraded by mining activities. Characterization of the resulting plant-based ?Eco-Mn?? catalyst by inductively coupled plasma mass spectrometry (ICP-MS), X-ray diffraction (XRD), X-ray fluorescence spectrometry (XRF) and X-ray photoelectron spectroscopy (XPS) demonstrated the presence of unusual polymetallic complexes of Mn(II) in the catalyst, along with Fe(III). Incorporation of these species into montmorillonite K10 as solid support provided a supported Eco-Mn? catalyst, whose properties were investigated for alkene epoxidation with H2O2 (30 wt%)/NaHCO3 (0.2 M) as a green terminal oxidizing reagent. The supported Eco-Mn? catalyst demonstrated a high efficiency for styrene epoxidation, with only 0.31 mol% of Mn, a much lower content of Mn than in previously described Mn-derived heterogeneous catalysts. Whereas Fe was also present in the supported Eco-Mn? catalyst, comparison experiments showed that Fe had only a limited role in the catalysis. The water content in the reaction medium had a beneficial effect, increasing the reaction efficiency. The supported Eco-Mn? catalyst was recycled four times without any loss of activity. Comparison of its properties to those of heterogeneous catalysts made by incorporation of commercial MnCl2.4H2O and FeCl3.6H2O highlighted the superior catalytic activity of polymetallic species present in the biosourced catalyst. The substrate scope of the method was extended to various alkenes, including bulky natural products, which were epoxidized with high yields (up to 99%), sometimes much higher than those obtained with already described Mn-derived heterogeneous catalysts. Finally, by simple adjustments of reaction conditions, the method allowed controlled access to aldehydes by oxidative cleavage of various styrene-derived substrates (up to 93% yield). The method thus constitutes a valuable alternative not only to classical epoxidation reagents, but also to oxidative cleavage of styrene-derived molecules, which usually involves toxic and hazardous reagents.

Equipe: Département CP2S : Chimie et électrochimie des matériaux

Li, Shen, Chaput, Laurent, Stein, Nicolas, Frantz, Cedric, Lacroix, David and Termentzidis, Konstantinos
Applied Physics Letters, 106(23):233108
2015

Mots clefs: molecular dynamics method phonons thermal conductivity bismuth compounds nanowires

Equipe: Département CP2S : Chimie et électrochimie des matériaux

2014

Articles:

Sakly, Adnene, Kenzari, Samuel, Bonina, David, Corbel, Serge and Fournee, Vincent
MATERIALS & DESIGN, 56:280-285
2014
ISSN: 0261-3069

Equipe: Département CP2S : Métallurgie et Surfaces

Sakly, Adnene, Kenzari, Samuel, Bonina, David, Corbel, Serge and Fournee, Vincent
Materials & Design, 56:280--285
2014

Equipe: Centre de Compétences : Matériaux et Procédés additifs

Kenzari, Samuel, Bonina, David, Dubois, Jean-Marie and Fournee, Vincent
Journal of Materials Processing Technology, 214(12):3108--3111
2014

Mots clefs: Additive manufacturing, Complex metallic alloys, Icosahedral Al–Cu–Fe–B, Phase transformations

Equipe: Centre de Compétences : Matériaux et Procédés additifs

Kenzari, Samuel, Bonina, David, Dubois, Jean-Marie and Fournee, Vincent
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 214(12):3108-3111
2014
ISSN: 0924-0136

Equipe: Département CP2S : Métallurgie et Surfaces

Kandaskalov, D., Fournee, V., Ledieu, J. and Gaudry, E.
JOURNAL OF PHYSICAL CHEMISTRY C, 118(40):23032-23041
2014
ISSN: 1932-7447

Equipe: Département CP2S : Métallurgie et Surfaces

Lambert, C-H., Mangin, S., Varaprasad, B.S.D.C.S., Takahashi, Y.K., Hehn, M., Cinchetti, M., Malinowski, G., Hono, K., Fainman, Y., Aeschlimann, M. and Fullerton, E.E.
Science,
2014

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

Turgut, C., Sinha, G., Mether, L., Lahtinen, J., Nordlund, K., Belmahi, M. and Philipp, P.
Analytical Chemistry, 86:11217-11225
2014

Equipe: Département CP2S : Expériences et Simulations des Plasmas Réactifs - Interaction plasma-surface et Traitement des Surfaces ESPRITS

Wegrowe, J.-E., Drouhin, H.-J. and Lacour, D.
Physical Review B - Condensed Matter and Materials Physics, 89(9)
2014

Equipe: Département P2M : Nanomagnétisme et Electronique de Spin

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