Laboratoire de réactivité de surface

Publications du LRS

Publications HAL

Recherche Avancée

  • Article dans une revue

On the preparation of multifunctional conversion coatings of FePO 4 /LiFePO 4

S. Valverde-Pérez, R. Figueroa, X.R. Nóvoa, D.S. Ramírez-Rico, Vincent Vivier

This research aims to take advantage of the properRes of phosphate coaRngs to overcome the problems inherent in using LiFePO4 as a powder. LiFePO4 coaRngs have been prepared on iron sheets using cyclic voltammetry in an aqueous soluRon of H3PO4 and LiOH. The voltammograms evolved from the iniRal…

Surface and Coatings Technology, 2024, 479, pp.130548. ⟨10.1016/j.surfcoat.2024.130548⟩. ⟨hal-04775533⟩

  • 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

Prebiotic chemistry

J.F. Lambert, M. Sodupe, P. Ugliengo

Without doubt, one of the most fascinating questions ever asked is ''What is life?'', immediately followed by ''How and where did life arise?''. Both questions are by no means exclusively related to chemistry and biology. Indeed, it was soon realized that…

Chemical Society Reviews, 2012, 41, pp.5373-5374. ⟨10.1039/c2cs90061k⟩. ⟨hal-00809265⟩

  • 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

Discrimination of infrared fingerprints of bulk and surface POH and OH of hydroxyapatites

Sarah Diallo-Garcia, Manel Ben Osman, Jean-Marc Krafft, Souhir Boujday, Guylene Costentin

The identification of the nature of the surface acid base pairs present on hydroxyapatites surface is a key point to rationalize their catalytic properties. To investigate the possible involvement of acidic protonated phosphate (POH) and/or of basic OH emerging from the channels, the spectroscopic…

Catalysis Today, 2014, 226, pp.81-88. ⟨10.1016/j.cattod.2013.11.041⟩. ⟨hal-00982290⟩

  • HDR

Petit Voyage vers la surface : Structure et réactivité de solides inorganiques, A small trip to the surface: structure and reactivity of inorganic solids

Lorenzo Stievano

Dans ma carrière, j'ai eu la chance et le privilège de m'attaquer à des problématiques scientifiques très variées, qui peuvent être ressemblées par le concept fédérateur de l'application de méthodes d'analyses physico-chimiques pour la compréhension de la structure et de la…

Catalyse. Université Pierre et Marie Curie - Paris VI, 2005. ⟨tel-00092493⟩

  • Article dans une revue

Promoting NH3 synthesis by supporting Ru nanoparticles on hydroxyapatites of appropriate chemical composition: Towards structure–activity relationships

Sabrina Akrour, Guylène Costentin, Sandra Casale, Alexandre Vimont, Cyril Thomas

Ammonia is the second most widely produced chemical in the world. It is essential for fertilizer manufacturing and has recently emerged as an energy carrier. Ammonia has been produced for over 100 years using the Haber-Bosch process, which is highly energy-intensive and accounts for nearly 3 % of…

Applied Catalysis B: Environmental, 2025, 384, pp.126141. ⟨10.1016/j.apcatb.2025.126141⟩. ⟨hal-05351385⟩

  • Article dans une revue

Stabilization of ribofuranose by a mineral surface

Thomas Georgelin, Maguy Jaber, Frederic Fournier, Guillaume Laurent, France Costa-Torro, Marie-Christine Maurel, Jean-François Lambert

The existence of the ribose moiety in biomolecules poses two problems for prebiotic chemistry. First, the exclusive presence of the furanose isomer in RNA has to be accounted for since furanose is a minor form in solution and does not exist in crystals. Second, all D-ribose polymorphs are unstable…

Carbohydrate Research, 2015, 402, pp.241-244. ⟨10.1016/j.carres.2014.07.018⟩. ⟨hal-01275035⟩

  • Article dans une revue

Efficiency of Polyoxometalate-Based Mesoporous Hybrids as Covalently Anchored Catalysts

Faiza Bentaleb, Ourania Makrygenni, Dalil Brouri, Cristina Coelho Diogo, Ahmad Mehdi, Anna Proust, Franck Launay, Richard Villanneau

Polyoxometalate (POM) hybrids have been covalently immobilized through the formation of amide bonds on several types of mesoporous silica. This work allows the comparison of three POM-based mesoporous systems, obtained with three different silica supports in which either the organic functions of…

Inorganic Chemistry, 2015, 54 (15), pp.7607-7616. ⟨10.1021/acs.inorgchem.5b01216⟩. ⟨hal-02143856⟩

  • Article dans une revue

Selective Oxidation of Methane to Formaldehyde Catalyzed by Phosphates: Kinetic Description by Bond Strengths and Specific Total Acidities

Vasilij Gomonaj, Hervé Toulhoat

A kinetic model predicts the experimental activity and selectivity patterns obtained in oxidation of methane for divided unsupported orthophosphates (M II 3(PO4)2, M III PO4,) and pyrophosphates (M II 2P2O7, M IV P2O7) catalysts spanning extended ranges of M-O bond strength (calculated from first…

ACS Catalysis, 2018, 8 (9), pp.8263-8272. ⟨10.1021/acscatal.8b02629⟩. ⟨hal-01955648⟩