Laboratoire de réactivité de surface

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  • Article dans une revue

Walking peptide on Au(110) surface: Origin and nature of interfacial process

V. Humblot, A. Tejeda, J. Landoulsi, A. Vallée, A. Naitabdi, Ahmed Taleb, C.-M. Pradier

IGF tri-peptide adsorption on Au(110)-(1 × 2) under Ultra High Vacuum (UHV) conditions has been investigated using surface science techniques such as synchrotron based Angle Resolved X-ray Photoemission Spectroscopy (AR-PES or AR-XPS), Low Energy Electron Diffraction (LEED) and Scanning Tunnelling…

Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2014, 628, pp.21-29. ⟨10.1016/j.susc.2014.05.004⟩. ⟨hal-01001598⟩

  • Article dans une revue

A comparative in situ TEM and UV-visible spectroscopic study of the thermal evolution of Ag species dispersed on Al2O3 and NaX zeolite supports

Elie Sayah, Dalil Brouri, Pascale Massiani

The oxidation states and dispersion of silver supported on alumina and faujasite were monitored by TEM, TPR and in situ UV-visible spectroscopy along the steps of thermal dehydration, then oxidation and finally reduction of the freshly prepared materials. An original transmission electron…

Catalysis Today, 2013, 218-219, pp.10-17. ⟨10.1016/j.cattod.2013.06.003⟩. ⟨hal-00958109⟩

  • 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

Influence of the nature and environment of vanadium in VSiBEA zeolite on selective catalytic reduction of NO with ammonia

R. Baran, T. Onfroy, T. Grzybek, S. Dzwigaj

The influence of the nature and environmental of vanadium on the catalytic properties of VxSiBEA zeolite in selective catalytic reduction of NO with ammonia is investigated. Catalysts containing 1-7.5 wt.% of vanadium were prepared by a two-step postsynthesis method which consists, in the first…

Applied Catalysis B: Environmental, 2013, 136-137, pp.186-192. ⟨10.1016/j.apcatb.2013.02.014⟩. ⟨hal-00812157⟩

  • Article dans une revue

Comprehensive study on the effect of magnesium loading over Nickel-ordered mesoporous alumina for dry reforming of methane

Leila Karam, Marco Armandi, Sandra Casale, Vanessa El Khoury, Barbara Bonelli, Pascale Massiani, Nissrine El Hassan

A comprehensive study of the effect of Mg loading on the performances in Dry Reforming of Methane of a series of mesoporous Ni 6-Mg x-Al 2 O 3 catalysts containing 6 wt% Ni and 0 to 26 wt% Mg is presented. Complementary characterizations by N 2 sorption, XRD, SEM/TEM, FT-IR, H 2-TPR and H 2-TPD of…

Energy Conversion and Management, 2020, 225, ⟨10.1016/j.enconman.2020.113470⟩. ⟨hal-03053832⟩

  • Article dans une revue

Au-Ru/TiO2 prepared by deposition-precipitation with urea: Relevant synthesis parameters to obtain bimetallic particles

Lina Calzada, Catherine Louis, Chang Wan Han, Volkan Ortalan, Rodolfo Zanella

Although Au and Ru are not miscible in the bulk, the paper focusses on the attempts to prepare bimetallic Au-Ru/TiO2 catalysts by deposition-precipitation with urea (co-DPU and sequential DPU, Au then Ru and vice versa). Gold was found already reduced after the preparations of co-DPU and Ru then Au…

Applied Catalysis B: Environmental, 2020, 264, pp.118503. ⟨10.1016/j.apcatb.2019.118503⟩. ⟨hal-04025207⟩

  • Article dans une revue

Unraveling the Direct Decomposition of NO x over Keggin Heteropolyacids and Their Deactivation Using a Combination of Gas-IR/MS and In Situ DRIFT Spectroscopy

Josefine Schnee, Laurent Delannoy, Guylène Costentin, Cyril Thomas

Keggin heteropolyacids (HPAs) have been known to be efficient NOx absorbers for many years, and to decompose a significant fraction of the NOx species pre-absorbed at 100-150 °C into harmless N2 and O2 upon rapid heating to 450 °C. However, this capability of Keggin HPAs to directly decompose NOx…

Journal of Physical Chemistry C, In press, ⟨10.1021/acs.jpcc.0c05945⟩. ⟨hal-02960399⟩

  • Article dans une revue

Two- and Four-Electrode Configurations for Contactless Reinforced Concrete Corrosion Monitoring

B. Díaz, X.R. Nóvoa, C. Pérez, A. Pintos, Vincent Vivier

The paper addresses the need for a fast and reliable method for field monitoring reinforced concrete structures. A proof of concept is presented where a noncontact procedure provides quantitative information on the concrete resistivity and reinforcement corrosion rate. A Wenner-type probe is…

Corrosion, 2022, 79 (4), pp.419-425. ⟨10.5006/4200⟩. ⟨hal-04294196⟩

  • Article dans une revue

Chemical Differentiation of Planets: A Core Issue

Hervé Toulhoat, Viacheslav Zgonnik

By plotting empirical chemical element abundances on Earth relative to the Sun and normalized to silicon versus their first ionization potentials, we confirm the existence of a correlation reported earlier. To explain this, we develop a model based on principles of statistical physics that predicts…

The Astrophysical Journal, 2022, 924 (2), pp.83. ⟨10.3847/1538-4357/ac300b⟩. ⟨hal-03536637⟩

  • Article dans une revue

Urea electro-oxidation byproducts impact on NiO/NiOOH anode performance studied by operando electrochemical impedance spectroscopy

Sophia Akkari, Vincent Vivier, Carlos M Sánchez-Sánchez

With significant quantities of urea (CO(NH2)2) being worldwide produced and its presence at high concentration in urine, simultaneous treatment of urea effluents and hydrogen production by paired electrolysis represents a very attractive approach in circular economy. Urea electro-oxidation on Ni-…

Electrochimica Acta, 2024, 474, pp.143526. ⟨10.1016/j.electacta.2023.143526⟩. ⟨hal-04298004⟩