Laboratoire de réactivité de surface

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  • Article dans une revue

Characterizations and performances of Ni/diatomite catalysts for dry reforming of methane

Karam Jabbour, Nissrine El Hassan, Anne Davidson, Pascale Massiani, Sandra Casale

Monometallic 5 wt% Ni containing catalysts were prepared by a two-solvent (cyclohexane/water) deposition method using cheap and widely available natural diatomites (Ni/AW2 and Ni/MN3) as supports. The fresh samples were characterized by SEM, EDX microanalysis, N2 adsorption–desorption isotherms,…

Journal Chemical Engineering, 2015, 264, pp.351-358. ⟨10.1016/j.cej.2014.11.109⟩. ⟨hal-01118933⟩

  • Article dans une revue

Real-time monitoring of Ti-Nb-Ta-Zr and commercially pure Ti interaction with H2O2 using atomic force microscopy and atomic emission spectroelectrochemistry

Agata Sotniczuk, Baojie Dou, Yangping Liu, Oumaïma Gharbi, Fan Sun, Halina Garbacz, Jeremy Gilbert, Kevin Ogle

This study offers a new approach to analyze surface behavior of titanium biomaterials during their exposure to the H2O2-enriched fluid which simulates post-operative inflammatory conditions. In this work in situ AFM and AESEC tests were exploited to study the origin of initial inflammatory-induced…

Applied Surface Science, 2024, 665, pp.160309. ⟨10.1016/j.apsusc.2024.160309⟩. ⟨hal-04752202⟩

  • Article dans une revue

Improved activity and stability in CO oxidation of bimetallic Au-Cu/TiO2 catalysts prepared by deposition-precipitation with urea

A. Sandoval, Catherine Louis, Rodolfo Zanello

Au-Cu bimetallic catalysts supported on TiO2 were prepared for the first time by sequential deposition-precipitation with the urea method, copper first then gold. Au-Cu catalysts with four different Au:Cu atomic ratios were synthesized (1:0.4 to 1:1.2). This method allowed quantitative deposition…

Applied Catalysis B: Environmental, 2013, 140-141, pp.363-377. ⟨10.1016/j.apcatb.2013.04.039⟩. ⟨hal-00911705⟩

  • Article dans une revue

On the origin of the optimum loading of Ag on Al2O3 in the C3H6-SCR of NOx

Tesnim Chaieb, Laurent Delannoy, Catherine Louis, Cyril Thomas

Ag/Al2O3 catalysts synthesized by the common impregnation technique with various Ag loadings were characterized by the NOx-Temperature-Programmed Desorption (TPD) method and their catalytic performances were evaluated in the selective catalytic reduction of NOx by propene (C3H6-SCR). It was found…

Applied Catalysis B: Environmental, 2013, 142-143, pp.780-784. ⟨10.1016/j.apcatb.2013.06.010⟩. ⟨hal-00907584⟩

  • Article dans une revue

Origins of the deactivation process in the conversion of methylbutynol on zinc oxide monitored by operando DRIFTS

C. Drouilly, J.M. Krafft, F. Averseng, H. Lauron-Pernot, Delphine Bazer-Bachi, Céline Chizallet, V. Lecocq, G. Costentin

conversion reaction. The formation of acetone and acetylene is indicative of the basic properties of the zinc oxide surface. This basic catalyst, whose conversion level depends on the nature of the pre-treatment, was found to deactivate versus time on stream. Poisoning the basic sites by CO2 pre-…

Catalysis Today, 2012, 205, pp.67-75. ⟨10.1016/j.cattod.2012.08.011⟩. ⟨hal-00809404⟩

  • Article dans une revue

Surface Segregation of Pd from TiO2-Supported AuPd Nanoalloys under CO Oxidation Conditions Observed In situ by ETEM and DRIFTS

Laurent Delannoy, Suzanne Giorgio, Jean-Gabriel Mattei, Claude R. Henry, Nadia El Kolli, Christophe M Éthivier, Catherine Louis

A TiO2-supported AuPd bimetallic catalyst with an Au/Pd atomic ratio of 8 was prepared by deposition-precipitation with urea, and its activity in CO oxidation at room temperature was compared to the one of a monometallic Au/TiO2 catalyst. X-ray photoelectron spectroscopy (XPS) and diffuse…

ChemCatChem, 2013, pp.1-11. ⟨10.1002/cctc.201200618⟩. ⟨hal-00836230⟩

  • Article dans une revue

What Do Tantalum Framework Sites Look Like in Zeolites? A Combined Theoretical and Experimental Investigation

Frederik Tielens, Tetsuya Shishido, Stanislaw Dzwigaj

Ab initio periodic DFT calculations on the structural and energy properties of different model tantalum framework sites in tantalum-substituted socialite cavities are presented and related to experimental FTIR measurements on Ta-containing SiBEA zeolites. The tantalum framework sites are…

Journal of Physical Chemistry C, 2010, 114 (21), pp.9923-9930. ⟨10.1021/jp102181m⟩. ⟨hal-00604808⟩

  • Article dans une revue

Effect of Coverage and Defects on the Adsorption of Propanethiol on Au(111) Surface: A Theoretical Study

Noelia B. Luque, Elizabeth Santos, Juan Andres, Frederik Tielens

Periodic density functional calculations have been carried out to investigate both the thiol adsorption on Au(111) surface and the reaction mechanism for the formation of the self-assembled monolayers, taking propanethiol as a representative example. The effect of coverage and surface defects (…

Langmuir, 2011, 27, pp.14514-14521. ⟨10.1021/la202861s⟩. ⟨hal-00670100⟩

  • Article dans une revue

Assessing carbon or tungstates coverage of ZrO2 nanoparticles supported on MWCNT via NOx-TPD

Patrick Kelleher, Gary Haller, Sandra Casale, Christophe Méthivier, Cyril Thomas

Multi-walled carbon nanotubes (MWCNT) promoted by oxides, that are far from trivial to characterize, have emerged as promising candidates in several fields such as biosensors and catalysis. In this study the coverage of ZrO2 nanoparticles supported on MWCNT, by carbonaceous deposits or tungstates…

Nano-Structures & Nano-Objects, 2018, 16, pp.110-119. ⟨10.1016/j.nanoso.2018.05.003⟩. ⟨hal-01803349⟩

  • Article dans une revue

A New Antibacterial N -Halamine Coating Based on Polydopamine

Nadia Nazi, Vincent Humblot, Catherine Debiemme

To prevent the formation of biofilms on material surfaces, the latter must have antibacterial properties. The aim of this study is to investigate the synthesis and the antibacterial effect of a new N-halamine coating based on polydopamine (PDA). The benefits of this coating are multiple, notably…

Langmuir, 2020, 36 (37), pp.11005-11014. ⟨10.1021/acs.Langmuir.0c01856⟩. ⟨hal-02981544⟩