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Incorporation of vanadium into the framework of hydroxyapatites: importance of the vanadium content and pH conditions during the precipitation step

Sarah Petit, Thrimurthulu Gode, Cyril Thomas, Stanislaw Dzwigaj, Yannick Millot, Dalil Brouri, Jean-Marc Krafft, Gwenaelle Rousse, Christel Laberty-Robert, Guylène Costentin

Even though vanadium-modified hydroxyapatite (V-HAp) samples are very promising systems for oxidative dehydrogenation of propane, the incorporation of vanadium into the hydroxyapatite framework was reported to be limited and to lead to over-stoichiometric compounds. Here, the synthesis of a Ca10(…

Physical Chemistry Chemical Physics, 2017, 19 (14), pp.9630 - 9640. ⟨10.1039/C6CP08782E⟩. ⟨hal-01522440⟩

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Evidence for an H2 promoting effect in the selective catalytic reduction of NO(x) by propene on Au/Al2O3.

Tesnim Chaieb, Laurent Delannoy, Sandra Casale, Catherine Louis, Cyril Thomas

This work provides the first experimental evidence of an H2 effect in C3H6-SCR over an Au/Al2O3 catalyst. This effect could only be observed when the number of Au catalytic sites was decreased. The N2 turnover rate estimated for the first time for the Au catalytic sites for H2–C3H6-SCR was found to…

Bulgarian Chemical Communications, 2015, 51 (4), pp.796-9. ⟨10.1039/c4cc07349e⟩. ⟨hal-01121184⟩

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Nanosized microporous crystals: emerging applications

Svetlana Mintova, Maguy Jaber, Valentin Valtchev

Chemical Society Reviews, 2015, 44 (20), pp.7207-7233. ⟨10.1039/c5cs00210a⟩. ⟨hal-02403134⟩

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Solvent effects on the vibrational spectrum of 3-hydroxyflavone

Ari Paavo Seitsonen, Abdenacer Idrissi, Stefano Protti, Alberto Mezzetti

3-hydroxyflavone (3HF) is a widely studied molecule that acts as a simplified prototype of biological, more complex flavonoids. Its solvation mechanism is still under investigation. Here we report a joint experimental and simulation study of the vibrational properties of 3HF in gas phase and in…

Journal of Molecular Liquids, 2019, 275, pp.723-728. ⟨10.1016/j.molliq.2018.11.020⟩. ⟨hal-02404703⟩

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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⟩

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The influence of the preparation procedures on the catalytic activity of Fe-BEA zeolites in SCR of NO with ammonia and N2O decomposition

Paweł Boroń, Lucjan Chmielarz, Jacek Gurgul, Kazimierz Łątka, Barbara Gil, Jean-Marc Krafft, Stanislaw Dzwigaj

Three series of Fe-containing BEA zeolites are prepared by two-step postsynthesis (PS), ion exchange (IE) and conventional wet impregnation (Imp) procedures with various Fe content (1.0–4.0 Fe wt.%). In these series of zeolites iron is mainly present as pseudo-tetrahedral Fe(III) as evidenced by…

Catalysis Today, 2014, 235, pp.210-225. ⟨10.1016/j.cattod.2014.03.018⟩. ⟨hal-01117136⟩

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Isopropanol Dehydration on Amorphous Silica–Alumina: Synergy of Brønsted and Lewis Acidities at Pseudo-Bridging Silanols

Kim Larmier, Céline Chizallet, Sylvie Maury, Nicolas Cadran, Johnny Abboud, Anne-Félicie Lamic-Humblot, Eric Marceau, Hélène Lauron-Pernot

The mechanism of isopropanol dehydration on amorphous silica–alumina (ASA) was unraveled by a combination of experimental kinetic measurements and periodic density functional theory (DFT) calculations. We show that pseudo-bridging silanols (PBS-Al) are the most likely active sites owing to the…

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Preparation of Co 2+ /ZSM5 Catalysts by Solid-State Reaction: Influence of the Precursor on Cobalt Speciation

M. Mhamdi, E. Marceau, S. Khaddar-Zine, A. Ghorbel, M. Che, Y. Ben Taarit, F. Villain

Zeitschrift für Physikalische Chemie, 2005, 219 (7-2005), pp.963-978. ⟨10.1524/zpch.219.7.963.67087⟩. ⟨hal-03032198⟩

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Direct d-Glucose Oxidation over Noble Metal Nanoparticles Introduced on Polymer and Inorganic Supports

Valentina Matveeva, Alexey Bykov, Valentin Doluda, Mikhail Sulman, Narendra Kumar, Stanislaw Dzwigaj, E. Marceau, Leonid Kustov, Olga Tkachenko, Esther Sulman

Topics in Catalysis, 2009, 52 (4), pp.387-393. ⟨10.1007/s11244-008-9171-3⟩. ⟨hal-03032168⟩

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Hydrogen-Rich Gas Production by Upgrading of Biomass Pyrolysis Vapors over NiBEA Catalyst: Impact of Dealumination and Preparation Method

Jacek Grams, Robert Ryczkowski, Renata Sadek, Karolina Chałupka, Kamila Przybysz, Sandra Casale, Stanislaw Dzwigaj

The main goal of this work was to develop a highly active catalyst in lignocellulosic biomass conversion to hydrogenrich gas. The studies were focused on the evaluation of an impact of dealumination of BEA zeolites on the catalytic performance of nickel-containing BEA zeolite catalysts in the…

Energy & Fuels, 2020, 34 (12), pp.16936-16947. ⟨10.1021/acs.energyfuels.0c02958⟩. ⟨hal-03987079⟩