• Article dans une revue

Transformations of γ-alumina in aqueous suspensions. 1. Alumina chemical weathering studied as a function of pH

Xavier Carrier, Eric Marceau, Jean-François Lambert, Michel Che

Hydration of γ-Al2O3 is often reported to occur via the superficial transformation of the alumina surface into alumina hydroxide-like layers. However, very little evidence has been given so far to support this hypothesis. It is demonstrated here by X-ray diffraction, TEM, electron diffraction and…

Journal of Colloid and Interface Science, 2007, 308, pp.429-437. ⟨10.1016/j.jcis.2006.12.074⟩. ⟨hal-00133775⟩

• Article dans une revue

Surface response methodology for the study of supported membrane formation.

C. Rossi, Elisabeth Briand, P. Parot, Michaël Odorico, Joël Chopineau

We report on the investigations of the formation of the tethered lipid bilayer by vesicle deposition on amine-functionalized surfaces. The tethered bilayer was created by the deposition of egg-PC vesicles containing 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-poly-(ethyleneglycol)-N-…

Journal of Physical Chemistry B, 2007, 111, pp.7567-7576. ⟨10.1021/jp0686792⟩. ⟨hal-00172758⟩

• Article dans une revue

Comparison of molybdenum carbide and tungsten carbide for the hydrodesulfurization of dibenzothiophene

Agnieszka Szymanska-Kolasa, Marek Lewandowski, Celine Sayag, G. Djéga-Mariadassou

The molybdenum and tungsten carbides (Mo2C and W2C) were synthesized, characterized and tested in hydrodesulfurization (HDS) of dibenzothiophene (DBT). The phase purity of these catalysts was established by X-ray diffraction (XRD), and the surface properties were determined by N2 BET specific…

Catalysis Today, 2006, 119, pp.7-12. ⟨10.1016/j.cattod.2006.08.021⟩. ⟨hal-00128084⟩

• Article dans une revue

On the kinetics of CO oxidation by O2 over RhI(CO)2 catalytic species anchored to a zeolitic support

Céline Fontaine-Gautrelet, Cyril Thomas, Jean-Marc Krafft, Gérald Djéga-Mariadassou

The reactivity of RhI(CO)2 towards CO oxidation was studied on a model Rh(0.7 wt%)/HY material. The kinetic results show that RhI(CO)2 exhibit a fairly low activity. It is therefore suggested that the catalytic species responsible for the enhanced activity of Rh/Ce0.68Zr0.32O2 [Manuel et al., J.…

Topics in Catalysis, 2007, 42-43, pp.357-361. ⟨10.1007/s11244-007-0205-z⟩. ⟨hal-00157007⟩

• Article dans une revue

On the clarification of the IR stretching vibration assignment of adsorbed N2 on Rh0 and Rhd+ surface atoms of supported Rh crystallites

Céline Fontaine-Gautrelet, Jean-Marc Krafft, Gérald Djéga-Mariadassou, Cyril Thomas

The low temperature adsorption of N2 on Rh/SiO2 samples of various particle-size distributions was followed by FTIR. The addition of O2 pulses on Rh0 surfaces saturated with chemisorbed N2 allowed us to reassign stretching frequencies attributed originally to N2-Rh0 to N2-RhΔ+. The formation of the…

Journal of Physical Chemistry B, 2006, 110, pp.10075-10081. ⟨10.1021/jp061077y⟩. ⟨hal-00079961⟩

• Article dans une revue

Modelling of a Lean NOx-Trap system with NO/NO2 differentiation and sulfur poisoning

Alexis Manigrasso, Pierre Darcy, Patrick da Costa

One of the challenges in the automotive industry is to develop new vehicles and new technologies with minimal costs. In this context, modeling becomes an important tool for the design of future technologies by reducing the number of tests needed to develop a new exhaust system. With the emergence…

SAE International Journal of Fuels and Lubricants, 2010, 3 (2), pp.414-424. ⟨hal-00604776⟩

• Article dans une revue

Fast and potent bactericidal membrane lytic activity of PaDBS1R1, a novel cationic antimicrobial peptide

Luz N Irazazabal, William F Porto, Isabel C.M. Fensterseifer, Eliane S.F. Alves, Carolina Matos, Antônio C.S. Menezes, Mário R Felício, Sónia Gonçalves, Nuno Santos, Suzana M Ribeiro, Vincent Humblot, Luciano M Lião, Ali Ladram, Octavio L Franco

Antimicrobial peptides (AMPs) are promising candidates for the development of future antibiotics. In an attempt to increase the efficacy of therapeutic AMPs, computer-based design methods appear as a reliable strategy. In this study, we evaluated the antimicrobial efficiency and mechanism of action…

Biochimica et Biophysica Acta:Biomembranes, 2019, 1861 (1), pp.178-190. ⟨10.1016/j.bbamem.2018.08.001⟩. ⟨hal-02053758⟩

• Article dans une revue

Modifying protein adsorption by layers of glutathione pre-adsorbed on Au(111).

Anne Vallée, Vincent Humblot, Christophe Méthivier, Paul Dumas, Claire-Marie Pradier

Molecular interaction with metal surfaces raises fundamental questions regarding their binding tendency, their dispersion on the surface, as well as their conformation which may change their biological properties; addressing these questions, and being able to tune protein interactions, is of…

Journal of Physics: Condensed Matter, 2011, 23, pp.484002-484002. ⟨10.1088/0953-8984/23/48/484002⟩. ⟨hal-00689987⟩

• Article dans une revue

Selective hydrogenation of 1,3-butadiene over bimetallic Au-Ni/TiO2 catalysts prepared by deposition-precipitation with urea

Antonio Aguilar-Tapia, Laurent Delannoy, Catherine Louis, Chang Wan Han, Volkan Ortalan, Rodolfo Zanella

Journal of Catalysis, 2016, 344, pp.515 - 523. ⟨10.1016/j.jcat.2016.10.025⟩. ⟨hal-01564246⟩

• Poster de conférence

Direct insight into the activation mechanism of Fe and Sb catalysts by operando TEM and XAS techniques

Aliou Sadia Traore, Walid Baaziz, Yong Zhou, Andrei Khodakov, Mirella Virginie, E. Marceau, Vitaly Ordomsky, Sharmin Sharna, Valérie Briois, Ovidiu Ersen

Operando VII, May 2023, Grindelwald, Switzerland. ⟨hal-04523746⟩