• Chapitre d'ouvrage

Preparation of Pt°/MCM-41: effect of drying on MCM-41 structure and Pt° dispersion

Baichun Zhu, Franck Letellier, Juliette Blanchard, Katia Fajerwerg, Catherine Louis, Denis Guillaume, Denis Uzio, Miehèle Breysse

Pt°/MCM-41 catalysts were prepared by electrostatic adsorption of Pt(NH3)42+ at pH=8, followed by calcination under O2 and reduction. This procedure allows to prepare highly dispersed Pt° nanoparticles (D>76%), but has the drawback to modify significantly the structure of the ordered mesoporous…

E.M. Gaigneaux; M. Devillers; D.E. De Vos; S. Hermans; P.A. Jacobs; J.A. Martens; P. Ruiz. Scientific Bases for the Preparation of Heterogeneous Catalysts, 162, Elsevier, pp.449-456, 2006, Studies in Surface Science and Catalysis, 978-0-444-52827-8. ⟨10.1016/S0167-2991(06)80939-0⟩. ⟨hal-03663614⟩

• Communication dans un congrès

Physicochemical characterizations of ionic liquid-molecular solvents mixtures

Nesrine Chaabene, Kieu Ngo, Mireille Turmine

ISSP 2018, Jul 2018, Tours, France. ⟨hal-03977348⟩

• Article dans une revue

Experimental clues for detecting biosignatures on Mars

J.-C. Viennet, S. Bernard, Corentin Le Guillou, P. Jacquemot, E. Balan, L. Delbes, B. Rigaud, T. Georgelin, M. Jaber

Forthcoming exploration of Mars aims at identifying fossil biosignatures within ancient clay-rich formations. The subsurface of Mars has mostly acted as a giant freezer for the last 4 Gyr, thereby preserving potential remains of martian life. Yet, volcanism and impactors have periodically triggered…

Geochemical Perspectives Letters, 2019, Geochemical Perspectives Letters, 12, pp.28-33. ⟨10.7185/geochemlet.1931⟩. ⟨hal-02415460⟩

• Article dans une revue

Scanning Electrochemical Microscopy for Investigating Gas Bubble/Liquid Interfaces

Claude Gabrielli, François Huet, Michel Keddam, Philippe Rousseau, Vincent Vivier

Scanning electrochemical microscopy was used to characterize air bubble/electrolyte interfaces for bubbles of diameter in the millimeter range. Contrary to rigid insulated substrate/liquid interfaces, the approach of the tip of the microelectrode was shown to lead to a deformation of the bubble…

Electrochemical and Solid-State Letters, 2003, 6 (10), pp.E23. ⟨10.1149/1.1604971⟩. ⟨hal-04219330⟩

• Communication dans un congrès

Unveiling the M−F/OH bonding and anionic ordering in Mg, Zn, Cu−based hydroxyfluorides for the design of basic catalysts

Helies Boumali, Matthew R. Suchomel, Étienne Durand, Thomas Onfroy, Guillaume Laugel, Hélène Pernot

Functional inorganic materials, mostly oxides but also fluorides, sulfides, or nitrides has led to the development of many modern technologies. The usual way to improve the chemical and physical properties of these materials was the cationic substitution in order to tune the chemical bonding. These…

15ème Journées Thématiques de l'Association Bordelaise de Cristallographie - JABC 2023, Association Bordelaise de Cristallographie, Jun 2023, Bordeaux, France. ⟨hal-04628119⟩

• Article dans une revue

Effect of the niobium state on the properties of NbSiBEA as bifunctional catalysts for gas- and liquid-phase tandem processes

Pavlo I. Kyriienko, Olga V. Larina, Nataliia O. Popovych, Sergiy O. Soloviev, Yannick Millot, Stanislaw Dzwigaj

NbSiBEA zeolites contained isolated framework mononuclear Nb(V) (Nb0.7SiBEA) and a mixture of framework mononuclear and extra-framework polynuclear Nb(V) (Nb2.0SiBEA) were prepared by two-step postsynthesis method as evidenced by XRD, NMR, DR UV–vis and FTIR. DR UV–vis showed that two types of…

Journal of Molecular Catalysis A: Chemical, 2016, 424, pp.27-36. ⟨10.1016/j.molcata.2016.06.024⟩. ⟨hal-01346172⟩

• Article dans une revue

Enhanced selectivity of 3-D ordered macroporous Pt/Al2O3 catalysts in nitrites removal from water

A.C. Sunil Sekhar, A. Zaki, S. Troncea, S. Casale, C.P. Vinod, J.P. Dacquin, P. Granger

Applied Catalysis A : General, 2018, 564, pp.26-32. ⟨10.1016/j.apcata.2018.07.014⟩. ⟨hal-03984216⟩

• Article dans une revue

Critical assessment of solvent effects on absorption and fluorescence of 3HF in acetonitrile in the QM/PCM framework: A synergic computational and experimental study

Daniele Loco, Stefano Protti, Benedetta Mennucci, Alberto Mezzetti

Absorption and fluorescence properties of 3-hydroxyflavone (3HF) dissolved in the polar aprotic solvent acetonitrile have been investigated by electronic spectroscopies, associated to mixed quantum mechanical (QM)/classical calculations, where the effect of the solvent is included at the classical…

Journal of Molecular Structure, 2019, 1182, pp.283-291. ⟨10.1016/j.molstruc.2018.12.085⟩. ⟨hal-02178337⟩

• Article dans une revue

Corrosion propagation monitoring using electrochemical noise measurements on carbon steel in hydrogenocarbonated solution containing chloride ions

Chloé Comas, François Huet, Kieu Ngo, Marion Fregonese, Hassane Idrissi, Bernard Normand

The propagation of localized corrosion on API 5 L X65 carbon steel in hydrogenocarbonated solution containing chloride ions was monitored during long immersion times by electrochemical noise (EN) measurements in ZRA mode. Monitoring corrosion propagation from the EN amplitude is possible but…

Corrosion Science, 2021, 193, pp.109885. ⟨10.1016/j.corsci.2021.109885⟩. ⟨hal-03387864⟩

• Thèse

Comprehension of cellulose depolymerisation mechanisms induced by iron ions, Compréhension des mécanismes de dépolymérisation de la cellulose induits par les ions fer

Alice Gimat

Degradation of paper by iron gall inks (IGI) is a challenging issue for written heritage conservation. These inks consist of a mixture of iron(II) sulphate, tannins and gum Arabic, and are therefore acidic and iron-rich. Hence, paper degradation by IGI is often attributed to a combination of acid…, La dégradation du papier par les encres ferrogalliques (EFG) est un défi pour la conservation du patrimoine écrit. Ces encres, composées d'un mélange de sulfate de fer (II), de tannins et de gomme Arabique, sont acides et riches en fer. Par conséquent, les mécanismes de dégradation des…

Material chemistry. Université Pierre et Marie Curie - Paris VI, 2016. English. ⟨NNT : 2016PA066579⟩. ⟨tel-01654429⟩