Laboratoire de réactivité de surface

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  • Article dans une revue

Potential of electrochemical techniques (macro and microelectrodes) in fronth flotation concentration of sulfide minerals, Potencialidade das técnicas eletroquímicas (macro e microeletrodos) na concentração por flotação de minerais sulfetados

Marina Martins Mennucci, Tatiana Mallet Machado, Vincent Vivier, Hercílio Gomes De Melo, Jean Vicente Ferrari

ABSTRACT The interactions between sulfide minerals and the chemistry of the exposure medium, from the grinding process to the flotation pulp, can be electrochemical and/or galvanic and influence the hydrophobicity of their surfaces, resulting in different levels of recovery. In the literature, most…, RESUMO As interações entre os minerais sulfetados e a química do meio de exposição, desde o processo de moagem dos minérios até a polpa de flotação, podem ser de caráter eletroquímico e/ou de natureza galvânica e influenciam a hidrofobicidade de suas superfícies, resultando em diferentes níveis de…

Revista Matéria, 2022, 27 (1), pp.e13151. ⟨10.1590/S1517-707620220001.1351⟩. ⟨hal-03720585⟩

  • Article dans une revue

Nature of the active sites in CO oxidation on FeSiBEA zeolites

Ireneusz Kocemba, Jacek Rynkowski, Jacek Gurgul, Robert P. Socha, Kazimierz Łątka, Jean-Marc Krafft, Stanislaw Dzwigaj

FeSiBEA zeolites containing 1 wt% of iron were prepared by a two-step postsynthesis method in acidic (pH = 2.6) (Fe1.0SiBEA(w)) and alkaline (pH = 10) (Fe1.0SiBEA(p)) conditions. The structure of the studied materials, their acidity as well as the nature and environment of iron present in the…

Applied Catalysis A : General, 2016, 519, pp.16-26. ⟨10.1016/j.apcata.2016.03.025⟩. ⟨hal-01297494⟩

  • Article dans une revue

PET waste as organic linker source for the sustainable preparation of MOF-derived methane dry reforming catalysts

Leila Karam, Arianna Miglio, Stefania Specchia, Nissrine El Hassan, Pascale Massiani, Julien Reboul

A catalyst made of Ni 0 nanoparticles highly dispersed on a lamellar alumina support was prepared by an environmentally-friendly route. The latter involved the synthesis of an aluminum-containing metalorganic framework (MOF) MIL-53(Al) in which the linkers were derived from the depolymerization of…

Materials Advances, 2021, ⟨10.1039/d0ma00984a⟩. ⟨hal-03187428v2⟩

  • Article dans une revue

Surfaces for hearts: Establishing the optimum plasma surface engineering methodology on polystyrene for cardiac cell engineering

Maria Kitsara, Dimitrios Kontziampasis, Efi Bolomiti, Alexandre Simon, Panagiotis Dimitrakis, Antoine Miche, Georgios Kokkoris, Onnik Agbulut, Vincent Humblot

Plasma surface modification is a popular method for improving cell culture on surfaces, and polystyrene (PS) is literature’s material of choice. This study identifies the optimum plasma treatment for promoting normal cardiac cell behaviour during culture. PS slides were plasma-treated with O2, N2,…

Applied Surface Science, 2023, 620, pp.156822 (12). ⟨10.1016/j.apsusc.2023.156822⟩. ⟨hal-04238230⟩

  • Article dans une revue

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⟩

  • Article dans une revue

A Study of Cobalt Speciation in Co/Al2O3 Catalysts Prepared from Solutions of Cobalt-Ethylenediamine Complexes

François Dumond, Eric Marceau, Michel Che

The thermal reduction of Co/Al2O3 catalysts prepared by impregnation of Co(II) nitrate generally leads to migration of cobalt ions into alumina with formation of cobalt aluminate. In order to prevent the latter, it is attempted to reduce cobalt by decomposition of supported precursor salts…

Journal of Physical Chemistry C, 2007, 111 (12), pp.4780-4789. ⟨10.1021/jp067781w⟩. ⟨hal-00143721⟩

  • Article dans une revue

On the reactivity of NO/N2 mixtures with aluminum surfaces: a combined PM-IRRAS and QCM investigation

Aude Delebecque, Cyril Thomas, Claire-Marie Pradier, Christophe Methivier, Hervé Paoli, Martine Carré, Eric Coffre

Abstract. The interaction of NO, and the further reactivity of oxygen, with water-passivated aluminum surfaces are investigated for the first time by in situ Polarization Modulation Infrared Reflexion Absorption Spectroscopy (PM-IRRAS) coupled with Quartz Crystal Microbalance (QCM). Chemical and…

Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2007, 602, pp.283-290. ⟨10.1016/j.susc.2007.10.035⟩. ⟨hal-00202695⟩

  • Article dans une revue

Total Oxidation of Methane on Oxide and Mixed Oxide Ceria-Containing Catalysts

Marius Stoian, Vincent Rogé, Liliana Lazar, Thomas Maurer, Jacques C Védrine, Ioan-Cezar Marcu, Ioana Fechete

Methane, discovered in 1766 by Alessandro Volta, is an attractive energy source because of its high heat of combustion per mole of carbon dioxide. However, methane is the most abundant hydrocarbon in the atmosphere and is an important greenhouse gas, with a 21-fold greater relative radiative…

Catalysts, 2021, 11 (4), pp.427. ⟨10.3390/catal11040427⟩. ⟨hal-03236104⟩

  • Article dans une revue

A combined experimental and theoretical study of the simultaneous occupation of SIa and SI0 sites in fully dehydrated K-LSX

Hazar Guesmi, Pascale Massiani, Habiba Nouali, Jean-Louis Paillaud

In the case of fully potassium exchanged X and LSX faujasites, it was reported from a single crystal X-ray study on zeolite X and preliminary powder X-ray diffraction (PXRD) study on zeolite LSX that K+ ions can be found concomitantly in both sites I and I' with partial or full occupancy of…

Microporous and Mesoporous Materials, 2012, 159, pp.87-95. ⟨10.1016/j.micromeso.2012.04.011⟩. ⟨hal-01054894⟩

  • 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⟩