Laboratoire de réactivité de surface

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  • Article dans une revue

The state of BEA zeolite supported nickel catalysts in CO2 methanation reaction

Wojciech Gac, Witold Zawadzki, Grzegorz Słowik, Marcin Kuśmierz, Stanislaw Dzwigaj

Two model nickel catalysts for CO2 methanation reaction were prepared by the impregnation method using unmodified and dealuminated BEA-type zeolite supports, denoted NiHAlBEA and NiSiBEA. Transmission electron microscopy (TEM) and X-ray diffraction studies evidenced formation of metallic nickel…

Applied Surface Science, 2021, 564, pp.150421. ⟨10.1016/j.apsusc.2021.150421⟩. ⟨hal-03360250⟩

  • Article dans une revue

Static and dynamic electronic characterization of organic monolayers grafted on a silicon surface

Olivier Pluchery, Y. Zhang, R. Benbalagh, L. Caillard, J. J. Gallet, F. Bournel, A.-F. Lamic-Humblot, M. Salmeron, Y. J. Chabal, F. Rochet

Organic layers chemically grafted on silicon offer excellent interfaces that may open up the way for new organic–inorganic hybrid nanoelectronic devices. However, technological achievements rely on the precise electronic characterization of such organic layers. We have prepared ordered grafted…

Physical Chemistry Chemical Physics, 2016, 18 (5), pp.3675-3684. ⟨10.1039/C5CP05943G⟩. ⟨hal-01262800⟩

  • Article dans une revue

Critical assessment of solvent effects on absorption and fluorescence of 3HF in acetonitrile in the QM/PCM framework: A synergic computational and experimental study

Daniele Loco, Stefano Protti, Benedetta Mennucci, Alberto Mezzetti

Absorption and fluorescence properties of 3-hydroxyflavone (3HF) dissolved in the polar aprotic solvent acetonitrile have been investigated by electronic spectroscopies, associated to mixed quantum mechanical (QM)/classical calculations, where the effect of the solvent is included at the classical…

Journal of Molecular Structure, 2019, 1182, pp.283-291. ⟨10.1016/j.molstruc.2018.12.085⟩. ⟨hal-02178337⟩

  • 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

ADSORPTION ON STAINLESS STEEL SURFACES OF BIOSURFACTANTS PRODUCED BY GRAM-NEGATIVE AND GRAM-POSITIVE BACTERIA : CONSEQUENCE ON THE BIOADHESIVE BEHAVIOR OF PATHOGENIC STRAINS.

Thierry Meylheuc, Christophe Méthivier, Margareth Renault, Jean-Marie Herry, Claire-Marie Pradier, Marie-Noëlle Bellon-Fontaine

The ability of adsorbed biosurfactants (Pf and Lb) obtained from gram negative bacterium (Pseudomonas fluorescens) or gram positive bacterium (Lactobacillus helveticus) to inhibit adhesion of four listerial strains to stainless steel was investigated. These metallic surfaces were characterized…

Colloids and Surfaces B: Biointerfaces, 2006, 52 (2), pp.146-155. ⟨10.1016/j.colsurfb.2006.04.016⟩. ⟨hal-00111667⟩

  • Article dans une revue

Effect of water on cobalt speciation during solid-state synthesis of Co2+/ZSM5 catalysts: quantitative study by TPR and XAS

Eric Marceau, Michel Che, Françoise Villain, Younès Ben Taarit

The effect of water on cobalt speciation in the synthesis of Co2+/ZSM5 catalysts is quantitatively studied by the combined use of macroscopic and local characterization techniques, TPR and X-ray absorption spectroscopies, respectively. The addition of a small quantity of water to cobalt acetate and…

Microporous and Mesoporous Materials, 2006, 93, pp.62-70. ⟨10.1016/j.micromeso.2006.02.004⟩. ⟨hal-00109394⟩

  • Article dans une revue

Catalytic activity of HAlBEA and NixHAlBEA zeolites in hydrogen-assisted dehydrochlorination of 1,2-dichloroethane into vinyl chloride monomer

Rafal Baran, Anna Srebowata, I.I. Kaminska, D. Łomot, Stanislaw Dzwigaj

HAlBEA zeolite is prepared by calcination of parent TEABEA zeolite at 823 K for 3 h in air following ionic exchange with NH4NO3 solution. NixHAlBEA zeolites are prepared by impregnation of HAlBEA with an aqueous solution of Ni(NO3)2, following a drying at 333 K to obtain NixHAlBEA. The calcination…

Microporous and Mesoporous Materials, 2013, 180, pp.209-218. ⟨10.1016/j.micromeso.2013.06.037⟩. ⟨hal-00910991⟩

  • Article dans une revue

Methanol oxidation on VSiBEA zeolites: Influence of V content on the catalytic properties

Marciej Tredja, Maria Ziolek, Yannick Millot, Karolina Chalupka, Michel Che, Stanislaw Dziwag

This study deals with the influence of V content on the catalytic properties of VxSiBEA zeolites in the oxidation of methanol. The samples are prepared following a postsynthesis method reported earlier (S. Dzwigaj, M.J. Peltre, P. Massiani, A. Davidson, M. Che, T. Sen, S. Sivasanker, Chem. Commun…

Journal of Catalysis, 2011, 281 (1), pp.169-176. ⟨10.1016/j.jcat.2011.04.013⟩. ⟨hal-00663368⟩

  • Article dans une revue

Bioengineering of stainless steel surface by covalent immobilization of enzymes. Physical characterization and interfacial enzymatic activity

Anne Caro, Vincent Humblot, Christophe Methivier, Michel Minier, Lucica Barbes, Joachim Li, Michele Salmain, Claire-Marie Pradier

Two hydrolytic enzymes, namely lysozyme and trypsin, were covalently immobilized onto stainless steel surfaces using wet chemistry processes. The immobilization strategy took advantage of the spontaneous physisorption of the polymer poly(ethylene imine) (PEI) onto stainless steel to yield a firmly…

Journal of Colloid and Interface Science, 2010, 349 (1), pp.13-18. ⟨10.1016/j.jcis.2009.12.001⟩. ⟨hal-00604709⟩

  • Article dans une revue

Study of a chromium-free treatment on Hot-Dip Galvanized steel: Electrochemical behaviour and performance in a saline medium

S. Le Manchet, Jessem Landoulsi, C. Richard, D. Verchere

This paper focuses on the physicochemical characterization and on the electrochemical behaviour of a Cr-free treatment applied on Hot-Dip Galvanized (HDG) steel. The treatment is composed of fluorotitanic acid, manganese phosphate, phosphoric acid and an organic compound Effects of the two major…

Surface and Coatings Technology, 2010, 205 (2), pp.475-482. ⟨10.1016/j.surfcoat.2010.07.009⟩. ⟨hal-00604773⟩