Laboratoire de réactivité de surface

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  • Article dans une revue

Search for confinement effects in mesoporous supports: hydrogenation of o-xylene on Pt /MCM-41

Franck Letellier, Juliette Blanchard, Katia Fajerwerg, Catherine Louis, Michele Breysse, Denis Guillaume, Denis Uzio

The occurrence in meso-porous supports of a confinement effect related to the adsorption strength of a reaction intermediate on a metallic phase dispersed in the meso pores is examd., as well as its effect on the activity and selectivity. A model is proposed in order to det. the catalyst…

Catalysis Letters, 2006, 110, pp.115-124. ⟨10.1007/s10562-006-0093-z⟩. ⟨hal-00111995⟩

  • Poster de conférence

Chemical evolution of organic molecules under Mars-like UV radiation conditions simulated in the laboratory with the MOMIE setup

O. Poch, Patrice Coll, Cyril Szopa, F. Stalport, T. Georgelin, M. Jaber, J.F. Lambert

The search for organic carbon at the surface of Mars, as clues of past habitability or remnants of life, is a major science goal of Mars' exploration. Understanding the chemical evolution of organic molecules under current Martian environmental conditions is essential to support the past,…

Eighth International Conference on Mars, Jul 2014, Pasadena, United States. pp.abstract 1228, 2014. ⟨hal-01139973⟩

  • Article dans une revue

Cysteine-montmorillonite composites for heavy metal cation complexation: A combined experimental and theoretical study

Khaled El Adraa, Thomas Georgelin, Jean-François Lambert, Farouk Jaber, Frederik Tielens, Maguy Jaber

Green composites based on montmorillonite (Mt) and cysteine, were prepared for heavy metal removal. A comparison between the adsorption properties of the resulting hybrid inorganic-organic materials and the pure montmorillonite was carried out for the following heavy metal cations Cd2+, Hg2+, Pb2…

Chemical Engineering Journal, 2017, 314, pp.406 - 417. ⟨10.1016/j.cej.2016.11.160⟩. ⟨hal-01490419⟩

  • Article dans une revue

Triple structuration and enhanced corrosion performance of 316L in Laser-Powder Bed Fusion

Alexis Fouchereau, Hicham Maskrot, Fernando Lomello, Sophie Bosonnet, Oumaïma Gharbi, Benoit Gwinner, Pierre Laghoutaris, Frédéric Schuster, Vincent Vivier, Beatriz Puga

This work focuses on the influence of the feedstock powders on the microstructural properties and corrosion behavior of 316L stainless steel (SS) produced by laser powder bed fusion (L-PBF) from two different suppliers. Microstructural investigations conducted after additive manufacturing reveal…

Corrosion Science, 2024, 228, pp.111830. ⟨10.1016/j.corsci.2024.111830⟩. ⟨cea-04602059⟩

  • Article dans une revue

Preparation of niobium-based oxygen carriers by polyol-mediated process and application to chemical-looping reforming

Pedro Henrique Lopes Nunes Abreu dos Santos, Sophie Nowak, Stéphanie Lau-Truong, Juliette Blanchard, Patricia Beaunier, José Augusto Jorge Rodrigues, Roberta Brayner

New niobium-based oxygen carriers were prepared adopting polyol-mediated process. Four different polyols were used (diethylene glycol, triethylene glycol, tetraethylene glycol, and 1,2-propanediol) and four different quantities of water (0 mL, 1 mL, 10 mL, 30 mL, with a total volume of 80 mL of…

Journal of Nanoparticle Research, 2019, 21 (5), ⟨10.1007/s11051-019-4528-z⟩. ⟨hal-02375304⟩

  • Thèse

Etude du front de minéralisation du tissu osseux et des modèles biomimétiques associés, Study of the mineralization front in bone tissue and in biomimetic models

Marc Robin

Les travaux réalisés ont pour but de répondre à deux questions : comment le collagène s'organise-t-il dans l'os mature ? Comment la phase minérale de l'os se forme-t-elle et quel est l'effet de son environnement sur sa formation ? Nous avons étudié d'un point de vue…, This work aims to understand: How is reached the plywood architecture in bone? How is bone apatite formed and what is the effect of the environment on apatite formation? Thus, histological bone thin sections were investigated focusing on the interface between the osteoid and mature bone tissues.…

Chimie thérapeutique. Université Pierre et Marie Curie - Paris VI, 2016. Français. ⟨NNT : 2016PA066635⟩. ⟨tel-01907278v2⟩

  • Article dans une revue

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⟩

  • Article dans une revue

Polyol Process Coupled to Cold Plasma as a New and Efficient Nanohydride Processing Method: Nano-Ni 2 H as a Case Study

Sonia Haj-Khlifa, Sophie Nowak, Patricia Beaunier, Patricia de Rango, Michaël Redolfi, Souad Ammar-Merah

An alternative route for metal hydrogenation has been investigated: cold plasma hydrogen implantation on polyol-made transition metal nanoparticles. This treatment applied to a challenging system, Ni-H, induces a reordering of the metal lattice, and superstructure lines have been observed by both…

Nanomaterials, 2020, 10 (1), pp.136. ⟨10.3390/nano10010136⟩. ⟨hal-02552297⟩

  • Article dans une revue

Development of acidic sites in WOx/ZrO2

Thomas Onfroy, Guillaume Clet, Marwan Houalla

Evidence is shown of the appearance of Brønsted acidic sites in WOx/ZrO2 at a given W loading and of a direct correlation between the abundance of ‘strong’ Brønsted acidic sites in these catalysts and propan-2-ol decomposition activity.

Chemical Communications, 2001, 15, pp.1378-1379. ⟨10.1039/b102867g⟩. ⟨hal-02399977⟩

  • Article dans une revue

Fischer-Tropsch reaction on Co-containing microporous and mesoporous Beta zeolite catalysts: the effect of porous size and acidity

Renata Sadek, Karolina Chalupka, Pawel Mierczynski, Jacek Rynkowski, Yannick Millot, Laetitia Valentin, Sandra Casale, Stanislaw Dzwigaj

This work deals with the investigation of the influence of the preparation procedure on the activity of microporous and mesoporous CoBeta zeolite in Fischer – Tropsch synthesis (FTS). The series of CoSiBeta, CoAlSiBeta and CoAlBeta zeolites were prepared by: i) two-step postsynthesis procedure (…

Catalysis Today, 2020, 354, pp.109-122. ⟨10.1016/j.cattod.2019.05.004⟩. ⟨hal-03987070⟩