• Article dans une revue

Selective Modification of the Acid-Base Properties of Ceria by Supported Au

Manuela C.I. Bezen, Cornelia Breitkopf, Nadia El Kolli, Jean-Marc Krafft, Catherine Louis, J.A. Lercher

Au supported on CeO2 prepared by deposition-precipitation with urea leads to a basic catalyst. Au acts in two ways as surface modifier. First, Au selectively interacts with Ce4+ cations by either blocking access to or reducing Ce4+ to Ce3+. Second, the resulting Au atoms (presumably as Au+ ions)…

Chemistry - A European Journal, 2011, 17 (25), pp.7095-7104. ⟨10.1002/chem.201002011⟩. ⟨hal-00666903⟩

• Article dans une revue

Stochastic Simulation and Single Events Kinetic Modeling: Application to Olefin Oligomerization

Javad Sharouzi, Denis Guillaume, Pierre Rouchon, Patrick da Costa

In order to handle a tractable network for complex reaction systems such as oligomerization, stochastic tools are applied to reduce the reaction mechanism. The particularity of this work is that quantitative single event kinetic modeling constants are used to generate a network which correctly…

Industrial and engineering chemistry research, 2008, pp.4308-4316. ⟨10.1021/ie071215l⟩. ⟨hal-00449235⟩

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A systematic study of the interactions between chemical partners (metal, ligands, counterion and support) involved in the design of Al2O3-supported nickel catalysts from diamine-Ni(II) chelates

Axel Löfberg, Fabien Négrier, Eric Marceau, Michel Che, Jean-Marc Giraudon, Léon Gengembre

Journal of Physical Chemistry B, 2005, 109, pp.2836-2845. ⟨10.1021/jp0403745⟩. ⟨hal-00082980⟩

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Influence of the nature of the reducible support on CO oxidation kinetics of supported Rhd+ catalysts: SnO2 versus Ce0.68Zr0.32O2

Céline Fontaine-Gautrelet, Cyril Thomas, Gérald Djéga-Mariadassou

CO-O2 kinetics was studied on Rh(0.3wt%)/SnO2 and compared with that reported previously on Rh/Ce0.68Zr0.32O2. The lower oxygen mobility on SnO2 and the stronger bonding of CO with the RhΔ+ sites of Rh/SnO2, are suggested to account for the lower CO oxidation activity of Rh/SnO2 compared with that…

Topics in Catalysis, 2007, 42-43, pp.363-366. ⟨10.1007/s11244-007-0206-y⟩. ⟨hal-00157011⟩

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Synthesis of RNA nucleotides in plausible prebiotic conditions from ab initio computer simulations

Andrea Pérez-Villa, Antonino Marco Saitta, Thomas Georgelin, Jean-François Lambert, François Guyot, Marie-Christine Maurel, Fabio Pietrucci

Understanding the mechanism of spontaneous formation of ribonucleotides under realistic prebiotic conditions is a key open issue of origins-of-life research. In cells, de novo and salvage nucleotide enzymatic synthesis combines 5-phospho-α-d-ribose-1-diphosphate (α-PRPP) and nucleobases.…

Journal of Physical Chemistry Letters, 2018, 9 (17), pp.4981-4987. ⟨10.1021/acs.jpclett.8b02077⟩. ⟨hal-01895482⟩

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Formation of heteropolymolybdates during the preparation of Mo and NiMo HDS catalysts supported on SBA-15: Influence on the dispersion of the active phase and on the HDS activity

Alvaro Sampieri, Stephane Pronier, Sylvette Brunet, Xavier Carrier, Catherine Louis, Juliette Blanchard, Katia Fajerwerg, Michele Breysse

Mo and Ni-Mo sulfides in SBA-15 and Al-SBA-15 catalysts were prepd. by incipient wetness co-impregnation of molybdenum and nickel precursors (followed by thermal treatment under He at 823 K) and sulfidation under 10% H2S/H2 at 673 K. Only incipient wetness impregnation of Mo on pure silica SBA-15…

Microporous and Mesoporous Materials, 2010, 130 (1-3), pp.130-141. ⟨10.1016/j.micromeso.2009.10.024⟩. ⟨hal-00604795⟩

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Incorporation of Nb(V) into BEA zeolite investigated by XRD, NMR, IR, DR UV-vis, and XPS

Stanislaw Dzwigaj, Yannick Millot, Christophe Methivier, Michel Che

Nb(x)SiBEA (x = 1.0, 1.5 Nb wt%) zeolites are prepared by a two-step postsynthesis method involving first the creation of vacant T-atom sites associated with silanol groups by dealumination of BEA zeolite by nitric acid solution and then by impregnation of the resulting SiBEA zeolite with the…

Microporous and Mesoporous Materials, 2010, 130 (1-3), pp.162-166. ⟨10.1016/j.micromeso.2009.10.027⟩. ⟨hal-00604714⟩

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Simple and Specific Grafting of Antibacterial Peptides on Silicone Catheters

Coline Pinese, Said Jebors, Cécile Echalier, Patricia Licznar-Fajardo, Xavier Garric, Vincent Humblot, Christophe Calers, Jean Martinez, Ahmad Mehdi, Gilles Subra

To fight against nosocomial infection initiated by colonization of medical devices, a strategy enabling the direct and fast functionalization of silicone surfaces is proposed. This strategy proceeds in a site-specific way using original hybrid silylated antibacterial peptides. This safe and up…

Advanced Healthcare Materials, 2016, 5 (23), pp.3067 - 3073. ⟨10.1002/adhm.201600757⟩. ⟨hal-01547344⟩

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Scabiose de l'appareil unguéal chez un nourrisson, Scabies of the nail unit in an infant

A Finon, Guillaume Desoubeaux, M. Nadal, G Georgescou, R. Baran, A. Maruani

Introduction.-La prise en charge de la gale du nourrisson n'est pas codifiée et les récidives sont fréquentes à cet âge. Nous rapportons un cas exceptionnel d'atteinte sous-unguéale et d'onychopathie des pieds, séquellaires d'une gale commune chez un nourrisson. Observation.-Un…

Annales de Dermatologie et de Vénéréologie, 2016, ⟨10.1016/j.annder.2016.09.043⟩. ⟨hal-02443849⟩

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On the physical properties of mixtures of nitrate salts and protic ionic liquids

Pablo Vallet, Silvia Bouzón-Capelo, Trinidad Méndez-Morales, Víctor Gómez-González, Yago Arosa, Raúl de La Fuente, Elena López-Lago, Julio Rodríguez, Luis Gallego, Juan Parajó, Josefa Salgado, Mireille Turmine, Luisa Segade, Oscar Cabeza, Luis Varela

We report a systematic study of the effect of salt concentration and its cation valence on several equilibrium and transport properties of mixtures of the model protic ionic liquid ethylammonium nitrate with monovalent (LiNO3), divalent (Mg(NO3)2 and Ca(NO3)2), and trivalent (Al(NO3)3) salts. These…

Journal of Molecular Liquids, 2022, 350, ⟨10.1016/j.molliq.2022.118483⟩. ⟨hal-03617221⟩