Laboratoire de réactivité de surface

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  • Communication dans un congrès

Caracterización in-operando de catalizadores Fe-N-C para la reducción del H2O2 mediante microscopía electroquímica de barrido

Carlos M Sánchez-Sánchez, Christian Candia-Onfray, Ricardo Venegas, Lin Zhang, Sophie Juillard, Ricardo Salazar, José F. Marco, Nieves Menendez, Francisco Javier Recio, Vincent Vivier

Se han desarrollado diferentes rutas sintéticas para obtener catalizadores pirolizados Fe-N-C muy activos para la reacción de reducción de oxígeno (ORR). En particular, presentamos aquí las bases nitrogenadas del ADN y el ARN como precursores de C-N [1]. El H2O2 formado como subproducto durante la…

XLII reunion del Grupo Especializado de Electoquimica de la RSEQ (42 GERSEQ 2022), Jul 2022, Santander, España. ⟨hal-03988309⟩

  • Article dans une revue

EXAFS spectroscopy as a tool to probe metal–support interaction and surface molecular structures in oxide-supported catalysts: application to Al2O3-supported Ni(ii) complexes and ZrO2-supported tungstates

Xavier Carrier, Eric Marceau, Hugo Carabineiro, Vicente Rodríguez-González, Michel Che

EXAFS spectroscopy is shown as a tool of prime importance to probe the formation of metal–oxygen–support bonds and unravel the surface molecular structure in oxide-supported systems through two examples: (i) a molecular metal complex (Ni(II) bisglycinate) characterized after impregnation and drying…

Physical Chemistry Chemical Physics, 2009, 11, pp.7527-7539 ⟨10.1039/b822969d⟩. ⟨hal-01496028⟩

  • Article dans une revue

Time-resolved infrared spectroscopy in the study of photosynthetic systems.

Alberto Mezzetti, Winfried Leibl

Time-resolved (TR) infrared (IR) spectroscopy in the nanosecond to second timescale has been extensively used, in the last 30 years, in the study of photosynthetic systems. Interesting results have also been obtained at lower time resolution (minutes or even hours). In this review, we first…

Photosynthesis Research, 2017, 131 (2), pp.121-144. ⟨10.1007/s11120-016-0305-3⟩. ⟨hal-01451714⟩

  • Article dans une revue

The Impact of Reduction Temperature and Nanoparticles Size on the Catalytic Activity of Cobalt-Containing BEA Zeolite in Fischer–Tropsch Synthesis

Karolina A Chalupka, Jacek Grams, Pawel Mierczynski, Malgorzata I Szynkowska, Jacek Rynkowski, Thomas Onfroy, Sandra Casale, Stanislaw Dzwigaj

A goal of this work was to investigate the influence of the preparation procedure and activation conditions (reduction temperature and reducing medium: pure hydrogen (100% H 2) or hydrogen-argon mixture (5% H 2-95% Ar)) on the activity of Co-containing BEA zeolites in Fischer-Tropsch synthesis.…

Catalysts, 2020, 10 (5), pp.553. ⟨10.3390/catal10050553⟩. ⟨hal-03987087⟩

  • Article dans une revue

Spatially controlled positioning of coordination polymer nanoparticles onto heterogeneous nanostructured surfaces

V. Trannoy, M. Faustini, David Grosso, F. Brisset, P. Beaunier, E. Rivière, Magali Putero, A. Bleuzen

Prussian Blue Analog (PBA) nanoparticles were formed on a heterogeneous nanostructured surface made of an ordered nanoperforated titanium oxide thin film deposited on a gold layer. The study of the nanocomposite film by grazing-incidence wide angle X-ray scattering, infrared spectroscopy, scanning…

Nanoscale, 2017, 9 (16), pp.5234-5243. ⟨10.1039/C7NR00024C⟩. ⟨hal-02012316⟩

  • Article dans une revue

Importance, features and uses of metal oxide catalysts in heterogeneous catalysis

Jacques C. Védrine

This short review paper aims at assembling the present state of the art of the multiuses of metal oxides in heterogeneous catalysis, concerning liquid and gaseous phases of the reactant mixtures on solid catalysts. It includes the description of the main types of metal oxide catalysts, of their…

Chinese Journal of Catalysis, 2019, 40 (11), pp.1627-1636. ⟨10.1016/S1872-2067(18)63162-6⟩. ⟨hal-02405087⟩

  • Article dans une revue

Chemical nature and thermal decomposition behavior of tartaric acid multilayers on rutile TiO 2 (110)

Elisa Meriggio, Rémi Lazzari, Christophe Méthivier, Pascal David, Stéphane Chenot, Xavier Carrier, Gregory Cabailh, Vincent Humblot

R,R-tartaric acid (RR-TA) thermal stability and decomposition on the rutile TiO2(110) surface was investigated by temperature programmed desorption. The authors show that a majority of RR-TA molecules are desorbed intact from multilayers at around 340 K, while they decompose from the first…

Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures, 2019, 37 (5), pp.051803. ⟨10.1116/1.5100957⟩. ⟨hal-02340226⟩

  • Article dans une revue

Controlling C−OAryl Hydrogenolysis vs Aryl Hydrogenation in Lignin Model Depolymerization Using Ni‐, Rh‐ or Ni/Rh‐based Silica Catalysts

Rita Raachini, Ferdaous Ben Romdhane, Capucine Sassoye, Maya Boutros, Franck Launay

Abstract This paper focuses on the hydrogenolysis of 2‐phenoxy‐1‐phenylethanone, modelling a pre‐oxidized form of lignin using five catalysts of similar metal content, prepared by impregnation of Ni(II), Rh(III) and both metals onto Aerosil‐380 in the presence of NH 3 , followed by a reduction step…

ChemCatChem, 2023, ⟨10.1002/cctc.202300948⟩. ⟨hal-04391575⟩

  • Article dans une revue

Kinetic Model of Energy Transfer Processes Between Low-Coordinated Ions on MgO by Photoluminescence Decay Measurements

Céline Chizallet, Guylène Costentin, Jean-Marc Krafft, Hélène Pernot, Michel Che

Photoluminescence decay studies of emitting species on MgO nanocubes at room temperature provide evidence of three sur- face species characterized by an excitation and emission wave- length couple {l exc ;l em }.Species A corresponds to {l exc =240 nm; l em =380 nm},whereas the couple {l exc =280…

ChemPhysChem, 2006, 7, pp.904. ⟨10.1002/cphc.200500580⟩. ⟨hal-00023604⟩

  • Article dans une revue

How to determine IR molar absorption coefficients of co-adsorbed species? Application to methanol adsorption for quantification of MgO basic sites

Béatrice Moulin, Laetitia Oliviero, Philippe Bazin, Marco Daturi, Guylène Costentin, Françoise Maugé

Methanol adsorption on MgO samples with different morphologies is studied by infrared (IR) spectroscopy coupled to volumetry or thermogravimetry measurements to probe qualitatively and quantitatively the acid-base paired sites. The molar absorption coefficients of [small nu](OC) vibration of non-…

Physical Chemistry Chemical Physics, 2011, 13 (22), pp.10797-10807. ⟨10.1039/C0CP02767G⟩. ⟨hal-00639308⟩