• Article dans une revue

Atomic level characterization and sulfur resistance of unsupported W2C during dibenzothiophene hydrodesulfurization. Classical kinetic simulation of the reaction

Marek Lewandowski, Agnieszka Szymanska-Kolasa, Céline Sayag, Patricia Beaunier, Gérald Djéga-Mariadassou

The stability of unsupported W2C tungsten carbide and its sulfur resistance during hydrodesulfurization (HDS) of dibenzothiophene (DBT) are a specificity of W2C. This material was characterized by X-ray diffraction, specific surface area measurements, HRTEM associated with EDS, lattice images,…

Applied Catalysis B: Environmental, 2014, 144, pp.750-759. ⟨10.1016/j.apcatb.2013.08.011⟩. ⟨hal-00960672⟩

• Article dans une revue

Vibrational and electrical investigations of a uniaxially stretched polystyrene/carbon nanotube composite

Liliane Bokobza, Gilles Garnaud, Patricia Beaunier, Jean-Luc Bruneel

Multiwall carbon nanotube (MWCNT)/polystyrene (PS) composite materials were prepared in the absence and in the presence of a surfactant. TEM analysis reveals the formation of chains made of several nanotubes tied up together upon application of the surfactant while an almost random distribution is…

Vibrational Spectroscopy, 2013, 67, pp.6-13. ⟨10.1016/j.vibspec.2013.03.002⟩. ⟨hal-00914572⟩

• Article dans une revue

Self-Organization and/or Nanocrystallinity of Co Nanocrystals Effects on the Oxidation Process Using High-Energy Electron Beam

Ana Cazacu, Claudio Larosa, Patricia Beaunier, Guillaume Laurent, Paolo Nanni, Liliana Mitoseriu, Isabelle Lisiecki

The enhanced stability of Co nanocrystals (NCs) when they are highly ordered at both nanometer and micrometer scales is reported. For the first time, it is shown that both the crystalline structure of Co nanoparticles (NPs) and their 2D hexagonal organization have a significant impact on the…

Advanced Functional Materials, 2014, 24 (1), pp.164-170. ⟨10.1002/adfm.201301465⟩. ⟨hal-01078026⟩

• Article dans une revue

Role of active components of an Ag/Al2O3/cordierite catalyst in selective reduction of NO by ethanol

N. A. Popovich, P. I. Kiriienko, S. Solov’ev, S. Orlik, S. Dzwigaj

We show that the activity of silver/aluminum oxide catalysts in selective reduction of nitrogen oxides by ethanol increases as the Al2O3 content increases, and is determined by the optimal silver content for which Ag + cations and Ag n nanoclusters form on the Al2O3 surface. The role of silver in…

Theoretical and Experimental Chemistry, 2012, 48 (4), pp.258 - 264. ⟨10.1007/s11237-012-9270-x⟩. ⟨hal-00805714⟩

• Article dans une revue

Synthesis of texturally biphasic mesoporous carbon-silica composites and carbons

Cristiam F. Santa, Maguy Jaber, Jean L. Guth, Ligia Sierra

We report a new synthesis of texturally biphasic carbon-silica composites and carbons that exhibit high surface areas (up to 1500 m2 g 1), pore volumes (up to 1.9 cm3 g 1) and mesopores (4.6-6.9 nm). The composite materials have ordered mesoporous carbon domains embedded in a disordered mesoporous…

Microporous and Mesoporous Materials, 2013, 173, pp.53-63. ⟨10.1016/j.micromeso.2013.01.033⟩. ⟨hal-00836323⟩

• Article dans une revue

Influence of organic additives on the properties of impregnationsolutions and on nickel oxide particle size for Ni/Al2O3catalysts

Faiza Bentaleb, Michel Che, Anne-Claire Dubreuil, Cécile Thomazeau, Eric Marceau

tThe introduction of organic additives, such as polyols, sugars or polyacids, in impregnation solutionshas been suggested to better control the size of nanoparticles on supported catalysts. The present paperfocuses on the roles played by three of these additives, sorbitol, glucose and citric acid,…

Catalysis Today, 2014, 235, pp.250-255. ⟨10.1016/j.cattod.2014.02.020⟩. ⟨hal-01065046⟩

• Article dans une revue

Antibacterial properties of sophorolipid-modified gold surfaces against Gram positive and Gram negative pathogens

Claire Valotteau, Ibrahim M. Banat, Christopher A. Mitchell, Helen Lydon, Roger Marchant, Florence Babonneau, Claire-Marie Pradier, Niki Baccile, Vincent Humblot

Sophorolipids are bioderived glycolipids displaying interesting antimicrobial properties. We show that they can be used to develop biocidal monolayers against Listeria ivanovii, a Gram-positive bacterium. The present work points out the dependence between the surface density and the antibacterial…

Colloids and Surfaces B: Biointerfaces, 2017, 157, pp.325-334. ⟨10.1016/j.colsurfb.2017.05.072⟩. ⟨hal-01535615⟩

• Article dans une revue

Unsupported shaped cobalt nanoparticles as efficient and recyclable catalysts for the solvent-free acceptorless dehydrogenation of alcohols

Arnaud Viola, Jennifer Péron, Kamila Kazmierczak, Marion Giraud, Carine Michel, Lorette Sicard, Noémie Perret, Patricia Beaunier, Mickaël Sicard, Michele Besson, Jean-Yves Piquemal

Oxidation of alcohols is a key-reaction for the valorization of biomass compounds, and green processes are preferred to avoid the use or production of toxic compounds. In this context, unsupported nanometer-sized catalysts have emerged as very promising materials for heterogeneous catalysis. In…

Catalysis Science & Technology, 2018, 8 (2), pp.562 - 572. ⟨10.1039/C7CY02089A⟩. ⟨hal-01744284⟩

• Communication dans un congrès

How SOFCs can help to turn a fossil fuel to a Kyoto friendly fuel.

F. Gitzhofer, Juliette Blanchard, A.J. Nsungui, Karine de Oliveira-Vigier, N. Abatzoglou, D. Gravelle

International green energy conferences, 2005, Waterloo, Canada. ⟨hal-00293759⟩

• Article dans une revue

Role of ethylenediamine in the preparation of alumina-supported Ni catalysts from [Ni(en)2(H2O)2](NO3)2: from solution properties to nickel particles

Fabien Négrier, E. Marceau, Michel Che, Dominique de Caro

Comptes Rendus. Chimie, 2003, 6 (2), pp.231-240. ⟨10.1016/S1631-0748(03)00026-2⟩. ⟨hal-03032203⟩