• Article dans une revue

Influence of the nature of the noble metal on the lean C3H6-assisted decomposition of NO on Ce0.68Zr0.32O2-supported catalysts

Cyril Thomas, Olivier Gorce, Françoise Villain, Gérald Djéga-Mariadassou

The Selective Catalytic Reduction (SCR) of NO assisted by C3H6 is investigated on Ce0.68Zr0.32O2 (CZ)-supported Platinum Group Metals (PGMs: Pd, Rh, Pt) catalysts. This study shows that the order of reactivity of the PGMs supported on CZ is: Pd Pt ≥Rh. The performances of the most active CZ-…

Journal of Molecular Catalysis A: Chemical, 2006, 249, pp.71-79. ⟨10.1016/j.molcata.2006.01.001⟩. ⟨hal-00067988⟩

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Characterization of Mo2C-WO2 composite catalysts for bifunctional isomerization: a new pulse method to quantify acid sites

Claude Potvin, Anne-Félicie Lamic Chae-Ho Shin Gérald Djega-Mariadassou Claude Potvin

Applied Catalysis A : General, 2006, 302, pp.5. ⟨10.1016/j.apcata.2005.12.006⟩. ⟨hal-00022217⟩

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Real time monitoring of the evolution of Ni2+ environment in faujasite upon rehydration by in situ dispersive-EXAFS.

Jean-François Groust, Catherine Pommier, Lorenzo Stievano, François Villain, Christine Giorgetti, François Baudelet, Pascale Massiani

The evolution of both oxygen and framework tetrahedral shells around Ni2+ cations in faujasite upon rehydration can be described in real time thanks to in situ dispersive-EXAFS. Such type of analysis permits precise experimental description of the coordination environment of cations in zeolite…

Catalysis Letters, 2005, 102, pp.257-260. ⟨10.1007/s10562-005-5865-3⟩. ⟨hal-00020239⟩

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Solid base catalysts obtained from hydrotalcite precursors, for Knoevenagel synthesis of cinamic acid and coumarin derivatives

E. Angelescu, Octavian Dumitriu Pavel, Ruxandra Bırjega, Rodica Zavoianu, Guylène Costentin, Michel Che

The goal of this paper was to study the synthesis of the cinamic acid, coumarin-3-carboxilic acid and their ethylesters by Knoevenagel condensation using the solid base catalysts obtained from calcined Mg–Al, Mg–Al + Ln (Ln = Dy, Gd) and Li–Al hydrotalcites, under solvent free conditions.…

Applied Catalysis A : General, 2006, 308, pp.13-18. ⟨10.1016/j.apcata.2006.04.011⟩. ⟨hal-00112131⟩

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Kinetic study of the hydrodesulfurization of dibenzothiophene over molybdenum carbides supported on functionalized carbon black composite Influence of indole

A. Hynaux, Celine Sayag, S. Suppan, J. Trawczynski, M. H. Lewandowski, A. Szymanska-Kolasa, G. Djéga-Mariadassou

Different carbon black composite (CBC) supported molybdenum carbides were synthesized. The support was functionalized with nitric acid at different pH of the impregnation solution (pH 5.2; 0), in order to improve the active phase dispersion. After characterization of these supported catalysts, the…

Applied Catalysis B: Environmental, 2006, 72, pp.62-70. ⟨10.1016/j.apcatb.2006.09.019⟩. ⟨hal-00128025⟩

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Heterogeneous Fenton Degradation of Nalidixic Acid on Fe(II)‐Sorbed Maghemite, as Probed by In Situ Attenuated Total Reflectance‐Fourier Transform Infrared Spectroscopy

Ana Carolina Schuh Frantz, Mbolantenaina Rakotomalala Robinson, Alberto Mezzetti, Sylvie Nélieu, Xavier Carrier, Guillaume Morin

The degradation of nalidixic acid (NAL) via heterogeneous Fenton reactions is investigated using Fe(II)-sorbed maghemite (Mh) as catalyst. The Fenton reaction is triggered by hydrogen peroxide (H2O2) and in situ attenuated total reflectance-Fourier transform infrared spectroscopy is employed to…

ChemPhysChem, 2026, 27 (11), pp.e202500857. ⟨10.1002/cphc.202500857⟩. ⟨hal-05639574⟩

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Les relations franco-kényanes dans les courses de fond : un processus postcolonial singulier (1960-2019)

Pascal Charroin, Bastien Soulé, Cyril Thomas

Stadion. Revue internationale d'histoire du sport, 2020, 44, pp.204-225. ⟨hal-04645893⟩

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Catalytic behaviour of hybrid LNT/SCR systems: Reactivity and in situ FTIR study

L. Castoldi, R. Bonzi, L. Lietti, P. Forzatti, S. Morandi, G. Ghiotti, S. Dzwigaj

The NOx storage-reduction over the single Pt-Ba/Al2O3 and Fe-ZSM-5 systems and over the hybrid Pt-Ba/Al2O3 + Fe-ZSM-5 systems, both physically mixed and in dual bed configuration with the SCR catalyst placed downstream of the LNT catalyst, is systematically investigated by Isothermal Step…

Journal of Catalysis, 2011, 282, pp.128-144. ⟨10.1016/j.cat.2011.06.002⟩. ⟨hal-00664960⟩

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Should W Surface Density of WOx-ZrO2 Catalysts Be Calculated With Respect To the Specific Surface Area of the Sample or That of ZrO2 Only?

Cyril Thomas

On the basis of the critical analysis of the NOx-TPD data obtained on WOx-ZrO2 samples [Law, H. Y.; Blanchard, J.; Carrier, X.; Thomas, C. J. Phys. Chem. C 2010, 114, 9731], this work provides convincing arguments for the first time upon which calculation of W surface density should be done by…

Journal of Physical Chemistry C, 2011, 115 (5), pp.2253-2256. ⟨10.1021/jp110497e⟩. ⟨hal-00602957⟩

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Structure of clean and hydrated alpha-Al2O3 (1(1)over-bar02) surfaces: implication on surface charge

Asma Tougerti, Christophe Methivier, Sylvain Cristol, Frederik Tielens, Michel Che, Xavier Carrier

Periodic DFT calculations coupled to a first-principle thermodynamic approach have allowed us to establish a surface phase diagram for the different terminations of the alpha-Al2O3 (1 (1) over bar 02) surface in various temperature and water pressure conditions. Theoretical results are compared…

Physical Chemistry Chemical Physics, 2011, 13 (14), pp.6531-6543. ⟨10.1039/c0cp01295e⟩. ⟨hal-00602953⟩