Laboratoire de réactivité de surface

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  • Article dans une revue

In Situ Solid–Gas Reactivity of Nanoscaled Metal Borides from Molten Salt Synthesis

Guillaume Gouget, Damien P. Debecker, Ara Kim, Giorgia Olivieri, Jean-Jacques Gallet, Fabrice Bournel, Cyril Thomas, Ovidiu Ersen, Simona Moldovan, Clément Sanchez, Sophie Carenco, David Portehault

Metal borides have mostly been studied as bulk materials. The nanoscale provides new opportunities to investigate the properties of these materials, e.g., nanoscale hardening and surface reactivity. Metal borides are often considered stable solids because of their covalent character, but little is…

Inorganic Chemistry, 2017, 56 (15), pp.9225 - 9234. ⟨10.1021/acs.inorgchem.7b01279⟩. ⟨hal-01739853⟩

  • Article dans une revue

Effect of ceria promotion on the catalytic performance of Ni/SBA-16 catalysts for CO 2 methanation

Chao Sun, Patricia Beaunier, Patrick da Costa

The presence of Ce inside the SBA-16 structure promoted the ratio of Ce 3+ and medium basic sites and thus favoured CH 4 formation.

Catalysis Science & Technology, 2020, 10 (18), pp.6330-6341. ⟨10.1039/D0CY00922A⟩. ⟨hal-04025210⟩

  • Article dans une revue

Intermittent dynamics of bubble dissolution due to interfacial growth of fat crystals

Irma Liascukiene, Gabriel Amselem, Jessem Landoulsi, Deniz Gunes, Charles Baroud

Foams are inherently unstable objects, that age and disappear over time. The main cause of foam aging is Ostwald ripening: smaller air bubbles within the foam empty their gas content into larger ones. One strategy to counter Ostwald ripening consists in creating armored bubbles, where solid…

Soft Matter, 2021, 17 (44), pp.10042-10052. ⟨10.1039/D1SM00902H⟩. ⟨hal-04025234⟩

  • Article dans une revue

Silk Polymers and Nanoparticles: A Powerful Combination for the Design of Versatile Biomaterials

Cristina Belda Marín, Vincent Fitzpatrick, David Kaplan, Jessem Landoulsi, Erwann Guénin, Christophe Egles

Silk fibroin (SF) is a natural protein largely used in the textile industry but also in biomedicine, catalysis, and other materials applications. SF is biocompatible, biodegradable, and possesses high tensile strength. Moreover, it is a versatile compound that can be formed into different materials…

Frontiers in Chemistry, 2020, 8, ⟨10.3389/fchem.2020.604398⟩. ⟨hal-04025159⟩

  • 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

On the promotional effect of Pd on the propene-assisted decomposition of NO on chlorinated Ce0.68 Zr0.32 O2

Cyril Thomas, Olivier Gorce, Céline Fontaine, Jean-Marc Krafft, Françoise Villain, Gérald Djéga-Mariadassou

The selective catalytic reduction (SCR) of NOx assisted by propene is investigated on Pd/Ce0.68 Zr0.32 O2 catalysts (Pd/CZ), and is compared, under identical experimental conditions, with that found on a Pd/SiO2 reference catalyst. Physico-chemical characterisation of the studied catalysts along…

Applied Catalysis B: Environmental, 2006, 63, pp.201-214. ⟨hal-00181040⟩

  • Article dans une revue

Structure, Orientation and Stability of Lysozyme Confined in layered Materials

Sébastien Balme, Régis Guégan, Jean-Marc Janot, Maguy Jaber, Mathilde Lepoitevin, Philippe Dejardin, Xavier Bourrat, Mikael Motelica-Heino

The confinement of lysozyme in 3 layered materials based on montmorillonite and lamellar double hydroxide exhibiting different surface charges was studied. The protein structure and orientation in these materials were determined by X-Ray diffraction, time resolved fluorescence and fluorescence…

The Royal Society of Chemistry, 2013, 9 (11), pp.3188-3196. ⟨10.1039/C3SM27880H⟩. ⟨insu-00779421v2⟩

  • Article dans une revue

Effects of dealumination on the performance of Ni-containing BEA catalysts in bioethanol steam reforming

Wojciech Gac, Magdalena Greluk, Grzegorz Słowik, Yannick Millot, Laetitia Valentin, Stanislaw Dzwigaj

The effects of dealumination of BEA zeolite on the formation of nickel active sites and the performance of Ni-containing BEA zeolite catalysts in the steam reforming of ethanol have been studied. Ni-containing BEA zeolite catalysts were prepared by the impregnation of unmodified and dealuminated…

Applied Catalysis B: Environmental, 2018, 237, pp.94-109. ⟨10.1016/j.apcatb.2018.05.040⟩. ⟨hal-01909340⟩

  • Article dans une revue

Ethanol Conversion into 1,3-Butadiene by Lebedev Method over MTaSiBEA Zeolites (M= Ag, Cu, Zn)

Pavlo I. Kyriienko, Olga V. Larina, Sergiy O. Soloviev, Svitlana M. Orlyk, Christophe Calers, Stanislaw Dzwigaj

Tantalum-containing SiBEA zeolite with isolated framework mononuclear Ta(V) doped with Ag, Cu and Zn were prepared and characterized by XRD, XPS, DR UV-VIS and FTIR (with pyridine, 2,6-di-tert-butylpyridine, pyrrole and deuterated chloroform). The conversion of ethanol as renewable raw material…

ACS Sustainable Chemistry & Engineering, 2017, ⟨10.1021/acssuschemeng.6b01728⟩. ⟨hal-01437547⟩

  • Article dans une revue

A selective and stable Fe/TiO 2 catalyst for selective hydrogenation of butadiene in alkene-rich stream

Zhao Wang, Laura Santander de Soto, Christophe Méthivier, Sandra Casale, Catherine Louis, Laurent Delannoy

The Fe/TiO 2 catalyst shows high selectivity to alkenes at high butadiene conversion and good stability at 175 °C.

Chemical Communications, 2021, 57 (57), pp.7031-7034. ⟨10.1039/d1cc02366g⟩. ⟨hal-03987090⟩