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  • Article dans une revue

Copper Zinc Aluminate Synthesized by Sol-Gel Method with Polyacrylic Acid as Catalysts for Glycerol Hydrogenolysis

L. Omar, T. Onfroy, S. Daniele, N. Perret

This study describes the use of novel Cu/ZnO/ZnAl2O4/PAAH (PAAH=polyacrylic acid) hybrid nanomaterials for glycerol hydrogenolysis. Their elaboration by sol-gel process either in one step or in two steps allowed to modulate their structural properties in terms of specific surface area, Lewis…

ChemCatChem, 2023, 15 (4), ⟨10.1002/cctc.202201297⟩. ⟨hal-03999405⟩

  • Article dans une revue

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⟩

  • Article dans une revue

Selectivities in Adsorption and Peptidic Condensation in the (Arginine and Glutamic Acid)/Montmorillonite Clay System

Maguy Jaber, Thomas Georgelin, Houssein Bazzi, France Costa-Torro, Jean-François Lambert, Gérard Bolbach, Gilles Clodic

The present study examines the selective adsorption and polymerization of two amino acids, glutamic acid (Glu) and arginine (Arg), on a cationic clay mineral, montmorillonite (Mt). Two experimental procedures were used: selective adsorption and wet impregnation. In the first case, an adsorption…

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 2014, 118 (44), pp.25447-25455. ⟨10.1021/jp507335e⟩. ⟨hal-01121644⟩

  • Article dans une revue

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⟩

  • Article dans une revue

Plasmonic Properties of Gold Nanostructures on Gold Film

Médéric Lequeux, David Mele, Priyamvada Venugopalan, Raymond Gillibert, Souhir Boujday, Wolfgang Knoll, Jakub Dostalek, Marc Lamy de La Chapelle

This paper reports on a systematic study of the plasmonic properties of periodic arrays of gold cylindrical nanoparticles in contact with a gold thin film. Depending on the gold film thickness, it observes several plasmon bands. Using a simple analytical model, it is able to assign all these modes…

Plasmonics, 2020, 15 (6), pp.1653-1660. ⟨10.1007/s11468-020-01185-9⟩. ⟨hal-03044556⟩

  • Article dans une revue

A New Nanocomposite: L-DOPA/Laponite

Maguy Jaber, Jean-Francois Lambert

A simple procedure is reported to obtain original nanocomposite materials combining the smectite Laponite and melanin-like polymers. Aq. polymn. of L-DOPA is considerably accelerated in the presence of suspended Laponite particles, and its mechanism is significantly modified with respect to…

Journal of Physical Chemistry Letters, 2010, 1 (1), pp.85-88. ⟨10.1021/jz900020m⟩. ⟨hal-00604726⟩

  • Article dans une revue

What Do the Niobium Framework Sites Look Like in Redox Zeolites? A Combined Theoretical and Experimental Investigation

Frederik Tielens, Tetsuya Shishido, Stanislaw Dzwigaj

Ab initio periodic DFT calculations oil the structural and energy properties of different model niobium framework sites ill niobium-substituted zeolites containing sodalite cavities are presented and related to experimental FTIR measurements oil Nb containing SiBEA zeolite. The niobium framework…

Journal of Physical Chemistry C, 2010, 114 (7), pp.3140-3147. ⟨10.1021/jp910956j⟩. ⟨hal-00604809⟩

  • Article dans une revue

Monitoring of the state of silver in porous oxides during catalyst preparation

Elie Sayah, Dalil Brouri, Anne Davidson, Pascale Massiani

Silver-supported porous oxides are promising heterogeneous catalysts for air treatment. Classical ways of prepn. are incipient wet impregnation or ion exchange (in case of zeolites) of a support with silver nitrate. Nevertheless, this precursor is known for its photosensitivity. The latter can lead…

Studies in Surface Science and Catalysis, 2010, 175 (Scientific Bases for the Preparation of Heterogeneous Catalysts), pp.711-714. ⟨hal-00604797⟩

  • Article dans une revue

Delamination of lamellar phyllosilicate Magadiite

Yun Fei Bi, Juliette Blanchard, Jean-Francois Lambert, Yannick Millot, P. P. Man, Shuang Qin Zeng, Hong Nie, da Dong Li, Ming Feng Li, Qing He Yang, Xiao Xin Chen

In this paper, a new delaminated mesoporous material was prepd. by swelling the lamellar phyllosilicate Magadiite using cetyltrimethylammonium bromide and tetrapropylammonium hydroxide soln., followed by delamination under the cavitation of ultrasonic treatment. Various characterization tools…

Chinese Science Bulletin, 2010, 55 (23), pp.2584-2588. ⟨10.1007/s11434-010-3737-8⟩. ⟨hal-00604701⟩

  • Article dans une revue

Mechanism of Metal Oxide Nanoparticle Loading in SBA-15 by the Double Solvent Technique

Juliette van Der Meer, Isabelle Bardez-Giboire, Cyrille Albert-Mercier, Bertrand Revel, Anne Davidson, Renaud Denoyel

The interaction between SBA-15 mesoporous silica, alkane solvents, and water was studied to understand the mechanism of the so-called double solvent technique. This method facilitates the loading of the pores of SBA-15 with a metal oxide precursor soln., by prewetting the SBA-15 with an alkane. In…

Journal of Physical Chemistry C, 2010, 114 (8), pp.3507-3515. ⟨10.1021/jp907002y⟩. ⟨hal-00604812⟩