Laboratoire de réactivité de surface

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  • Article dans une revue

Ni/CeO2 Nanoparticles Promoted by Yttrium Doping as Catalysts for CO2 Methanation

Valeria La Parola, Chao Sun, Patricia Beaunier, Leonarda F Liotta, Patrick da Costa

Ni (5 wt.%) catalysts over yttrium modified CeO2 oxides synthesized by hydrothermal method were prepared. For comparison Ni was supported over pure CeO2 and Y2O3. Characterizations by N2 adsorption/desorption, XRD, XPS, TEM/HRTEM, H2-TPR, CO2-TPD and TGA were carried out. The catalytic performance…

ACS Applied Nano Materials, 2020, 3 (12), pp.12355-12368. ⟨10.1021/acsanm.0c02841⟩. ⟨hal-03146777⟩

  • Article dans une revue

Heterogeneous catalytic partial oxidation of lower alkanes (C 1 –C 6 ) on mixed metal oxides

Jacques Védrine

This review paper aims at analysing the state of the art for partial oxidation and oxidative dehydrogenation (ODH) reactions of lower alkanes C1–C6 into olefins and oxygenated products (aldehydes, anhydrides, carboxylic acids) on metal oxide catalysts with cations of variable oxidation state, such…

Journal of Energy Chemistry, 2016, 25 (6), pp.936-946. ⟨10.1016/j.jechem.2016.10.007⟩. ⟨hal-02188605⟩

  • Article dans une revue

Conversion of syngas-derived C 2 + mixed oxygenates to C 3 –C 5 olefins over Zn x Zr y O z mixed oxide catalysts

Colin Smith, Vanessa Lebarbier Dagle, Matthew Flake, Karthikeyan K. Ramasamy, Libor Kovarik, Mark Bowden, Thomas Onfroy, Robert A. Dagle

In this study we report on a ZnxZryOz mixed oxide type catalyst capable of converting a syngas-derived C2+ mixed oxygenate feedstock to isobutene-rich olefins. Aqueous model feed comprising of ethanol, acetaldehyde, acetic acid, ethyl acetate, methanol, and propanol was used as representative…

Catalysis Science & Technology, 2015, 6 (7), pp.2325 - 2336. ⟨10.1039/C5CY01261A⟩. ⟨hal-01547866⟩

  • Article dans une revue

Preparation, characterization, and hydrogenation activity of new Rh 0 –MCM-41 catalysts prepared from as-synthesized MCM-41 and RhCl 3

Maya Boutros, Georges Moarbess, Thomas Onfroy, Franck Launay

Impregnation of as-synthesized MCM-41 silica by ethanolic solutions of rhodium(III) chloride was tested as an alternative to its introduction into the synthesis gel to get, after calcination and reduction by H2, highly dispersed metal(0) nanoparticles throughout the mesopores network. Rh(III) and…

Comptes Rendus. Chimie, 2018, 21 (5), pp.514-522. ⟨10.1016/j.crci.2018.01.003⟩. ⟨hal-04020427⟩

  • Article dans une revue

Tough thiourethane thermoplastics for fused filament fabrication

Gregory Ellson, Xavier Carrier, Jamie Walton, Samsuddin Faisal Mahmood, Kejia Yang, Joshua Salazar, Walter Voit

Fused filament fabrication (FFF) is the most common form of additive manufacturing. Most FFF materials are variants of commercially available engineering plastics. Their performance when printed can widely vary, thus there is an increasing volume of research on alternative materials with thermal…

Journal of Applied Polymer Science, 2018, 135 (6), pp.45574. ⟨10.1002/app.45574⟩. ⟨hal-04020495⟩

  • Article dans une revue

Brake wear (nano)particle characterization and toxicity on airway epithelial cells in vitro

Chloé Puisney, Evdokia K Oikonomou, Sophie Nowak, Alexandre Chevillot, Sandra Casale, Armelle Baeza-Squiban, Jean-François Berret

Particulate air pollution results from different sources, among which those related to road traffic have a significant impact on human health. Combustion-derived particles emitted by thermal engines have been incriminated and are now better controlled. In contrast, non-exhaust emission sources…

Environmental science‎.Nano, 2018, 5 (4), pp.1036-1044. ⟨10.1039/C7EN00825B⟩. ⟨hal-02342487⟩

  • Article dans une revue

Microstructural, morphological characterization and corrosion behavior of sand cast AlSi10Cu(Fe) alloy in chloride solution

Belkacem Korichi, Nacer Zazi, Stéphanie Delbrel, Kieu Ngo, Jean Paul Chopart

In order to examine the relationship between the microstructure and the corrosion behavior in chloride solution, the microstructure of AlSi10Cu (Fe) sand cast aluminum alloy has been investigated by using different techniques including scanning electron microscopy, energy-dispersive spectroscopy, X…

Chemical Papers, 2022, 76, pp.2947-2967. ⟨10.1007/s11696-022-02064-9⟩. ⟨hal-03597124⟩

  • Thèse

Confinement effect of Nickel in mesoporous silica-based catalysts for syngas production by reforming of methane with CO2, Effet de confinement du nickel dans des catalyseurs à base de silice mésoporeuse pour la production de gaz de synthèse par reformage du méthane avec le CO2

Marie-Nour Kaydouh

Although economically and environmentally advantageous, the methane dry reforming process using supported nickel based catalysts still faces problems of active phase (a transition metal) sintering and of carbon deposition, which result in catalytic activity loss. This thesis is focused on the study…, Malgré ses avantages économiques et environnementaux, le procédé de reformage à sec du méthane sur des catalyseurs au nickel supporté se heurte encore à des problèmes de frittage de la phase active (un métal de transition) et de dépôt de carbone, ce qui entraîne une diminution de l'activité…

Analytical chemistry. Université Pierre et Marie Curie - Paris VI; Université de Balamand (Tripoli, Liban), 2016. English. ⟨NNT : 2016PA066425⟩. ⟨tel-01628885⟩

  • Article dans une revue

Cu segregation in Au–Cu nanoparticles exposed to hydrogen atmospheric pressure: how is fcc symmetry maintained?

Q. Wang, A. Nassereddine, D. Loffreda, C. Ricolleau, D. Alloyeau, C. Louis, L. Delannoy, J. Nelayah, H. Guesmi

In a recent work [A. Nassereddine et al., Small 2021, 17, 2104571] we reported the atomic-scale structure and dynamics of sub-4 nm sized Au nanoparticles (NPs) supported on titania in H2 at atmospheric pressure obtained by using aberration-corrected environmental transmission electron microscopy (…

Faraday Discussions, 2022, 242, pp.375-388. ⟨10.1039/D2FD00130F⟩. ⟨hal-03863753v2⟩

  • Article dans une revue

Spiky gold shells on magnetic particles for DNA biosensors

Erin Bedford, Souhir Boujday, Claire-Marie Pradier, Frank Gu

Combined separation and detection of biomolecules has the potential to speed up and improve the sensitivity of disease detection, environmental testing, and biomolecular analysis. In this work, we synthesized magnetic particles coated with spiky nanostructured gold shells and used them to…

Talanta, 2018, 182, pp.259 - 266. ⟨10.1016/j.talanta.2018.01.094⟩. ⟨hal-01777933⟩