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Comparison between tungsten carbide and molybdenum carbide for the hydrodenitrogenation of carbazole

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

The activity of molybdenum and tungsten carbides in hydrodenitrogenation (HDN) of carbazole was studied. Transition metal carbides (Mo2C and W2C) were synthesized using the temperature-programmed reaction of the appropriate oxide precursor (MoO3 and WO3) with the following gas mixture: 10 vol.% CH4…

Catalysis Today, 2006, 119, pp.35-38. ⟨10.1016/j.cattod.2006.08.039⟩. ⟨hal-00128071⟩

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A Time-Resolved In Situ Quick-XAS Investigation of Thermal Activation of Fischer-Tropsch Silica-Supported Cobalt Catalysts

Hong Jingping, Eric Marceau, Andrei Y. Khodakov, Anne Griboval-Constant, Fontaine C. La, V. Briois

Chemistry - A European Journal, 2012, 18, pp.2802-2805. ⟨10.1002/chem.201103509⟩. ⟨hal-00687092⟩

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Influence of the state of iron on CO oxidation on FeSiBEA zeolite catalysts

Izabela Hnat, Ireneusz Kocemba, Jacek Rynkowski, Thomas Onfroy, Stanislaw Dzwigaj

The influence of the state of iron on the catalytic properties of FexSiBEA zeolite in the oxidation of CO was investigated. Various FexSiBEA zeolites (x = 0.6, 1.0, 4.0 and 10 wt%) were prepared by a two-step post synthesis method. The presence of Fe(III) in tetrahedral coordination for low Fe…

Catalysis Today, 2011, 176, pp.229-233. ⟨10.1016/j.cattod.2010.12.052⟩. ⟨hal-00664469⟩

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Surface Science Approach to the Solid-Liquid Interface: Surface-Dependent Precipitation of Ni(OH)2 on a-Al2O3 Surfaces

Asma Tougerti, Isabelle Llorens, Francesco d'Acapito, Emiliano Fonda, Jean-Louis Hazemann, Yves Joly, Dominique Thiaudi Ère, Michel Che, Xavier Carrier

A molecular-scale understanding of the adsorption of metal ions on oxide surfaces is of fundamental importance for various scientific areas where the oxide/water interface plays a central role, such as corrosion science, preparation of heterogeneous catalysts, transport of contaminants in the…

Angewandte Chemie International Edition, 2012, 51, pp.7697-7701. ⟨10.1002/anie.201201349⟩. ⟨hal-00749941⟩

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Elaboration of a reusable immunosensor for the detection of staphylococcal enterotoxin A (SEA) in milk with a quartz crystal microbalance

Michèle Salmain, Mahsa Ghasemi, Souhir Boujday, Claire-Marie Pradier

An immunosensor with quartz crystal microbalance (QCM) detection operating in flow-through mode was set up for assaying staphylococcal enterotoxin A (SEA) in model buffer medium and in milk. This biosensor is label-free and operates in the direct format. Each step of construction of the sensing…

Sensors and Actuators B: Chemical, 2012, 173, pp.148-156. ⟨10.1016/j.snb.2012.06.052⟩. ⟨hal-00744497⟩

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kinetics of the plasmon optical response of Au nanoparticles/TiO2 catalyst under O2 and H2 followed by differential diffuse reflectance spectroscopy

Yves Borensztein, Laurent Delannoy, Ruben G. Barrera, Catherine Louis

The changes in the optical properties of Au/TiO2 powder catalyst, prepared by the deposition-precipitation method, are measured in the visible range by use of a home-made diffuse differential reflectance spectrometer, when the ambient atmosphere is switched between H2 and O2. Two main features are…

The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2011, 63, pp.235. ⟨10.1140/epjd/e2011-10529-2⟩. ⟨hal-00648582⟩

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Origins of the deactivation process in the conversion of methylbutynol on zinc oxide monitored by operando DRIFTS

C. Drouilly, J.M. Krafft, F. Averseng, H. Lauron-Pernot, Delphine Bazer-Bachi, Céline Chizallet, V. Lecocq, G. Costentin

conversion reaction. The formation of acetone and acetylene is indicative of the basic properties of the zinc oxide surface. This basic catalyst, whose conversion level depends on the nature of the pre-treatment, was found to deactivate versus time on stream. Poisoning the basic sites by CO2 pre-…

Catalysis Today, 2012, 205, pp.67-75. ⟨10.1016/j.cattod.2012.08.011⟩. ⟨hal-00809404⟩

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Interaction of ZnII porphyrin with TiO2 nanoparticles: from mechanism to synthesis of hybrid nanomaterials.

Jolanda Spadavecchia, Christophe Méthivier, Jessem Landoulsi, Claire-Marie Pradier

The mechanism of interaction of Zn porphyrin (ZnPP) with TiO2 surfaces is investigated with a view to optimizing the synthesis of hybrid nanomaterials. The strategy consists of studying the adsorption of ZnPP on TiO2 flat surfaces by taking advantage of complementary surface characterization…

ChemPhysChem, 2013, 14, pp.2462-2469. ⟨10.1002/cphc.201300193⟩. ⟨hal-00983739⟩

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Electron transfers in a TiO 2 -containing MOR zeolite: synthesis of the nanoassemblies and application using a probe chromophore molecule

Alexandre Legrand, Alain Moissette, Matthieu Hureau, Sandra Casale, Pascale Massiani, Herve Vezin, Anne-Sophie Mamede, Isabelle Batonneau-Gener

Ionization of a guest molecule occluded in a TiO 2 -containing zeolite and electron transfers to the conduction band of the conductive material placed nearby. New assemblies constituted by a microporous matrix of mordenite (MOR) zeolite on which TiO2 nanoclusters are deposited were synthesized…

Physical Chemistry Chemical Physics, 2014, 16 (26), pp.13145-13155. ⟨10.1039/c4cp01543f⟩. ⟨hal-04732895⟩

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Effect of Coverage and Defects on the Adsorption of Propanethiol on Au(111) Surface: A Theoretical Study

Noelia B. Luque, Elizabeth Santos, Juan Andres, Frederik Tielens

Periodic density functional calculations have been carried out to investigate both the thiol adsorption on Au(111) surface and the reaction mechanism for the formation of the self-assembled monolayers, taking propanethiol as a representative example. The effect of coverage and surface defects (…

Langmuir, 2011, 27, pp.14514-14521. ⟨10.1021/la202861s⟩. ⟨hal-00670100⟩