• 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⟩

• Communication dans un congrès

CO2 methanation over NiMgAl mixed oxides: Improving their activity via an ultrasound-assisted method

Michel Obeid, Christophe Poupin, Madona Labaki, Samer Aouad, François Delattre, Eric M. Gaigneaux, Josefine Schnee, Edmond Abi-Aad

ICCDU 2023 - 20th International Conference on Carbon Dioxide Utilization, Jun 2023, Bari (IT), Italy. ⟨hal-04346547⟩

• 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

Optimization of Synthesis Conditions of Ni/SBA-15 Catalysts: Confined Nanoparticles and Improved Stability in Dry Reforming of Methane

Nissrine El Hassan, Marie-Nour Kaydouh, Nissrine El, Anne Davidson, Pascale Massiani

Despite its economic and environmental advantages, the dry reforming of methane using supported Ni-based catalysts remains challenging due to problems of metal particle sintering and carbon deposition, which lead to loss in catalytic activity. In this study, different silica supports, containing 5…

Catalysts, 2020, 11 (1), pp.44. ⟨10.3390/catal11010044⟩. ⟨hal-03146326⟩

• 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⟩

• Article dans une revue

Insights into the WOx Coverage-Dependent Location and Oxidation State of Noble Metals Supported on Tungstated Oxides: The Case of Rh/WOx−Ce0.62Zr0.38O2

Thomas Bonnotte, Rachel P. Doherty, Céline Sayag, Jean-Marc Krafft, Christophe Méthivier, Mickaël Sicard, Frédéric Ser, Cyril Thomas

Noble metals-promoted tungstated oxides have been shown to be profitable in a wide variety of catalytic reactions of environmental interest but to be detrimental in the hydrogenation of aromatics. The origin of the deleterious effect of tungstates on the hydrogenation performance of noble metals is…

Journal of Physical Chemistry C, 2014, 118, pp.7386−7397. ⟨10.1021/jp410848f⟩. ⟨hal-00979525⟩

• Thèse

Crystal-chemistry and reactivity of fibrous amphiboles of environmental and health interest, Cristallochimie et réactivité de surface d'amphiboles fibreuses d'intérêt environnemental et sanitaire

Alessandro Pacella

This work concerns the physico-chemical and structural characterisation of mineral fibres (asbestos) and the comprehension of the chemical and molecular mechanisms which are responsible of the development of human pathologies specific to their inhalation. In particular, in this work we performed a…, Ce travail de thèse concerne la caractérisation physico-chimique et structurale de fibres minérales et la compréhension de mécanismes chimiques et moléculaires qui peuvent amorcer des pathologies spécifiques relatives à leur inhalation. En particulier, dans ce travail on s'est concentrés sur…

Material chemistry. Université Pierre et Marie Curie - Paris VI; Università di Roma "La Sapienza", 2009. English. ⟨NNT : 2009PA066208⟩. ⟨tel-00814192⟩

• 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

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

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⟩