• Article dans une revue

Hydrogen and syngas production by methane dry reforming on SBA-15 supported nickel catalysts: On the effect of promotion by Ce0.75Zr0.25O2 mixed oxide

Abdulkader Albarazi, Patricia Beaunier, Patrick da Costa

In this work, the effects of doping Ni-based SBA-15 catalysts with Ceria-Zirconia mixed oxide (CZ) on the activity and stability of these catalysts during syngas production by methane dry reforming (MDR) were investigated and compared with the activity and stability of unmodified Ni/SBA-15. The…

International Journal of Hydrogen Energy, 2013, 38, pp.127-139. ⟨10.1016/j.ijhydene.2012.10.063⟩. ⟨hal-00913348⟩

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Evidence for emission and transfer of energy from excited edge sites of MgO smokes by photoluminescence experiments.

Romain Hacquart, Jean-Marc Krafft, Guylène Costentin, Jacques Jupille

New features are observed in photoluminescence spectra of MgO smokes produced in controlled conditions, an experiment inspired by previous measurements on cleaved MgO(100). Upon photoexcitation at 5.17–5.45 eV, most luminescence spectra observed can be decomposed into two bands, peaking at 3.82–3.…

Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2005, 595, pp.172-182. ⟨10.1016/j.susc.2005.08.009⟩. ⟨hal-00112145⟩

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Mesoporous materials from zeolite seeds as supports for nickel-tungsten sulfide active phases: Part 2. Catalytic properties for deep hydrodesulfurization reactions

Juliette Blanchard, Shuangqin Zeng, Michèle Breysse, Yahua Shib, Xintian Su, Hong Nie, Dadong Li

The properties of nickel-tungsten sulfide supported on MCM-41 aluminosilicate materials assembled from beta-zeolite seeds ([beta]-MCM-41) were examined in the conversion of 4,6-dimethyldibenzothiophene (4,6-DMDBT) pure or in mixture with dimethyldisulfide, carbazole and tetralin. As reported in the…

Applied Catalysis A : General, 2006, 298, pp.88-93. ⟨10.1016/j.apcata.2005.09.026⟩. ⟨hal-00080292⟩

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Evolution of nickel speciation from aqueous solution to the surface of Ni/SiO2: effect of the number of chelating ligands in [Ni(en)x(H2O)6-2x]2+

Michel Che, Eric Marceau, Ke Qiang Sun

The evolution of nickel speciation during the successive preparation steps of Ni–SiO2 catalysts is studied by UV-Vis-NIR, FT-IR, DTG, TPR and TEM. The study focuses on the effect of the number of chelating ligands in the precursor complexes [Ni(en)x(H2O)(6 2x)]2+ (en = ethylenediamine, x = 1, 2, 3…

Physical Chemistry Chemical Physics, 2006, 8, pp.1731-1738. ⟨10.1039/b513319j⟩. ⟨hal-00109406⟩

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Transition-Metal-Free Catalysts for the Sustainable Epoxidation of Alkenes: From Discovery to Optimisation by Means of High Throughput Experimentation

Warunee Lueangchaichaweng, Inge Geukens, Annelies Peeters, Benjamin Jarry, Franck Launay, Jean-Luc Bonardet, Pierre A. Jacobs, Paolo P. Pescarmona

Abstract: Transition-metal-free oxides were studied as heterogeneous catalysts for the sustainable epoxidation of alkenes with aqueous H2O2 by means of high throughput experimentation (HTE) techniques. A full-factorial HTE approach was applied in the various stages of the development of the…

Combinatorial Chemistry and High Throughput Screening, 2012, 15, pp.140-151. ⟨10.2174/138620712798868338⟩. ⟨hal-00757239⟩

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Alternated p-Conjugated Polymers Based on a 1,2- Diiminocyclohexane Chiral Unit for Nitroaromatics Sensing

Simon Clavaguera, Olivier J. Dautel, Lionel Hairault, Christophe Méthivier, Pierre Montméat, Eric Pasquinet, Claire-Marie Pradier, Françoise Serein-Spirau, Salem Wakim, Florian Veignal, Joël J.E. Moreau, Jean-Pierre Lère-Porte

The detection of 2,4-dinitrotoluene (DNT) by fluorescence quenching of a new class of polyimines consisting in p-conjugated segments regularly alternated with chiral C2 symmetry units has been studied for solutions and thin films. Their photophysical properties and their sensitivity towards DNT…

Journal of Polymer Science Part A: Polymer Chemistry, 2009, pp.xxx, xxx. ⟨10.1002/pola.23474⟩. ⟨hal-00394190⟩

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From Al2O3-supported Ni(II)-ethylenediamine complexes to CO hydrogenation catalysts: Characterization of the surface sites and catalytic properties

Eric Marceau, Axel Löfberg, Jean-Marc Giraudon, Fabien Négrier, Michel Che, Lucien Leclercq

Applied Catalysis A : General, 2009, 362, pp.34-39. ⟨10.1016/j.apcata.2009.04.029⟩. ⟨hal-00412330⟩

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Surface chemistry and surface reactivity of fibrous amphiboles that are not regulated as asbestos

M. Fantauzzi, M. Pacella, J. Fournier, A. Gianfagna, G. B. Andreozzi, A. Rossi

Three fibrous amphiboles that are not regulated as asbestos--two from Biancavilla (Sicily, Italy) and one from Libby (MT, USA)--were studied in order to establish relationships between surface chemistry and surface reactivity. The three fibrous samples, plus one prismatic fluoro-edenite from…

Analytical and Bioanalytical Chemistry, 2012, 404, pp.821-833. ⟨10.1007/s00216-012-6190-5⟩. ⟨hal-00805738⟩

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Photocatalytic Easy Recovery of Orthophosphates Contaminants in Water Using Amberlite‐732 Cationic‐Resin Exchanged by Ce 3+ and Ce 3+ ‐Au 3+ Species

Phds. Nawel Rahmoune, Siham Barama, Anne Davidson, David Montero, Mohamed Selmane, Antoine Miche, Fouad Benaliouche, Akila Barama

This report discusses the efficiency of photo-recovery of orthophosphate anions in water under visible irradiation using materials containing amorphous carbon, ceria and gold-ceria species. Catalysts were obtained by the exchange of Amberlite-732 polymeric-resin with isolated Ce(III) and co-mixing…

ChemistrySelect, 2022, 7 (13), ⟨10.1002/slct.202104577⟩. ⟨hal-04030648⟩

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Probing the Binding Mechanism of Peptides on a Copper Surface: Multi layer Self-Assembly Promoted by Glutamate Residues

Christophe Methivier, Victor Lebec, Jessem Landoulsi, Claire-Marie Pradier

Short peptides interact strongly with copper surfaces We report here a full characterization on the Interaction of Gly-Pto and the Cu(110) surface: By combining infrared analysis with X-ray photoelectron spectroscopy, two binding centers have been identified: the carboxylate and the amino groups…

Journal of Physical Chemistry C, 2011, 115 (10), pp.4041-4046. ⟨hal-00602943⟩