Laboratoire de réactivité de surface

Publications du LRS

Publications HAL

Recherche Avancée

  • Article dans une revue

Carbon black composites—supports of HDS catalysts

P. Gheek, S. Suppan, J. Trawczynski, A. Hynaux, Celine Sayag, G. Djéga-Mariadassou

HDS activity of sulfided Mo (W) catalysts supported on carbon black composites (CBC) is affected by kind of functional groups present on the CBC surface. Oxidation of CBC with (NH4)2S2O8 produce functionalities with the highest acid strength and corresponding catalyst exhibits the highest HDS…

Catalysis Today, 2006, 119, pp.19-22. ⟨10.1016/j.cattod.2006.08.026⟩. ⟨hal-00128078⟩

  • Article dans une revue

A DNA biosensor based on peptide nucleic acids on gold surfaces

Eva Mateo-Marti, C. Briones, Claire-Marie Pradier, Jose A. Martin-Gago

We present a DNA biosensor based on self assembled monolayers (SAMs) of thiol-derivatized Peptide nucleic acid (PNA) chains adsorbed on gold surfaces for recognizing complementary ssDNA. PNA molecules tend to realign their molecular axes parallel to the surface normal and form SAMs on gold surfaces…

Biosensors and Bioelectronics, 2006, 22, pp.1926-1932. ⟨10.1016/j.bios.2006.08.012⟩. ⟨hal-00138700⟩

  • Article dans une revue

Sorption of Cu(II) onto vineyard soils: macroscopic and spectroscopic investigations

Eric Marceau, Lorenzo Stievano

The sorption of Cu on five vineyard soils was examined via macroscopic and spectroscopic investigations. The composition of the soils was previously determined using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). X-ray absorption spectroscopy (XAS) was employed to determine the…

Journal of Colloid and Interface Science, 2007, 307, pp.40-49. ⟨10.1016/j.jcis.2006.10.080⟩. ⟨hal-00133593⟩

  • Article dans une revue

A surfactant-assisted preparation of well dispersed rhodium nanoparticles within the mesopores of AlSBA-15: characterization and use in catalysis

Leon Gengembre, Franck Launay, Boutros Maya, Denicourt-Nowicki Audrey, Alain Roucoux, Beaunier Patricia, Antoine Gedeon

Well dispersed and efficient Rh(0) hydrogenation catalysts were obtained by the redn. of Rh(iii)-exchanged mesoporous aluminosilicates by sodium borohydride in the presence of N,N-dimethyl-N-cetyl-N-(2-hydroxyethyl) ammonium chloride.

Chemical Communications, 2008, 25, pp.2920-2922. ⟨10.1039/b802548g⟩. ⟨hal-00338879⟩

  • Article dans une revue

Controlling the Nanocontact Nature and the Mechanical Properties of a Silica Nanoparticle Assembly

J. Avice, C. Boscher, G. Vaudel, G. Brotons, V. Juvé, M. Edely, C. Methivier, Vitali Goussev, P. Belleville, H. Piombini, P. Ruello

Elaborating advanced nanomaterials based on the assembly of nanoparticles (NPs) is a versatile route for targeting and tuning a wide variety of properties like optical, magnetic, and electrical properties or sensing. This route usually employs a so-called soft chemistry which has the advantage of…

Journal of Physical Chemistry C, 2017, 121 (42), pp.23769-23776. ⟨10.1021/acs.jpcc.7b08404⟩. ⟨hal-02536813⟩

  • Article dans une revue

Speciation of Ruthenium as a Reduction Promoter of Silica-Supported Co Catalysts: A Time-Resolved in Situ XAS Investigation

Jingping Hong, Eric Marceau, Andrei Y. Khodakov, Lucia Gaberová, Anne Griboval-Constant, Jean-Sébastien Girardon, Camille La Fontaine, Valérie Briois

Complete reduction of the metal phase in cobalt-containing catalysts is often difficult to reach and can be promoted by a small amount of noble metals. Because these costly promoters are introduced in a very low quantity, their speciation and their chemical interaction with cobalt have seldom been…

ACS Catalysis, 2015, 5 (2), pp.1273-1282. ⟨10.1021/cs501799p⟩. ⟨hal-01120477⟩

  • Article dans une revue

Vanadium-containing SBA-15 systems prepared by direct synthesis: physicochemical and catalytic properties in the decomposition of dichloromethane

Marco Piumetti, Barbara Bonelli, Marco Armandi, Lucia Gaberova, Sandra Casale, Pascale Massiani, Edoardo Garrone

Vx/SBA-15 catalysts (V content = 0.7-4.8 wt.%) were directly synthesized and tested for the oxidative decompn. of dichloromethane; impregnation-synthesized SBA-15 and V/SBA-15 catalysts were ref. samples. Catalyst structural and surface properties were characterized by complementary physicochem.…

Microporous and Mesoporous Materials, 2010, 133 (1-3), pp.36-44. ⟨10.1016/j.micromeso.2010.04.011⟩. ⟨hal-00604792⟩

  • Article dans une revue

Quantitative relationship between the nature of surface species and the catalytic activity of tungsten oxides supported on crystallized titania

Thomas Onfroy, Vanessa Lebarbier, Guillaume Clet, Marwan Houalla

A series of WOx/TiO2 catalysts contg. between 0.6 and 3.4 W at./nm2 was prepd. by pore vol. impregnation using ammonium metatungstate soln. on crystd. TiO2. Characterization of the solids by X-ray diffraction and Raman and IR spectroscopy indicated that the W phase was present essentially as a…

Journal of Molecular Catalysis A: Chemical, 2010, 318 (1-2), pp.1-7. ⟨10.1016/j.molcata.2009.11.013⟩. ⟨hal-00604787⟩

  • Article dans une revue

The role of the synthesis method in the structure formation of cobalt aluminate

Thomas Onfroy, Wen-Cui Li, Ferdi Schueth, Helmut Knoezinger

Cobalt aluminate (spinel) was prepd. via two synthesis routes firstly a co-pptn. method and secondly a nanocasting method. The surface chem. of these materials was characterized by IR-spectroscopy of the surface hydroxyl groups and of coordinatively unsatd. (cus) cations (Al and Co) by carbon…

Topics in Catalysis, 2011, 54 (5-7), pp.390-397. ⟨10.1007/s11244-011-9669-y⟩. ⟨hal-00602945⟩

  • Article dans une revue

Catalytic Aspects of Light-Induced Hydrogen Generation in Water with TiO2 and Other Photocatalysts: A Simple and Practical Way Towards a Normalization?

Thomas Maschmeyer, Michel Che

Evaluation is discussed of performance of solid photocatalysts for H2 generation from H2O so that they can be compared in a simple way whether sacrificial soln. is used or not. The addnl. chem. potential present in a sacrificial soln. will be the same regardless of the catalyst system used, so…

Angewandte Chemie International Edition, 2010, 49 (9), pp.1536-1539. ⟨10.1002/anie.200903921⟩. ⟨hal-00604779⟩