• Article dans une revue

Basic reactivity of CaO: investigating active sites under operating conditions

Hugo Petitjean, Celine Chizallet, Jean-Marc Krafft, Michel Che, Helene Lauron-Pernot, Guylene Costentin

A set of CaO samples was prepared from thermal decomposition of several precursors, leading to very different surface properties. During storage, CaO samples rehydrated quickly but reversibly. Before characterization, the samples were pre-treated at 1023 K under nitrogen flow to obtain CaO as the…

Physical Chemistry Chemical Physics, 2010, 12 (44), pp.14740-14748. ⟨10.1039/c0cp00855a⟩. ⟨hal-00604790⟩

• Article dans une revue

Synthesis and grafting of a BTP derivative onto a quartz crystal microbalance for lanthanide detection

Dimitri Mercier, Nicolas Leconte, Christophe Methivier, Franck Suzenet, G?ld Guillaumet, Anne Wuillaume, Claire-Marie Pradier

The ability of bis-triazinylpyridine (BTP) molecules to complex lanthanides is well-known in solution and can be judiciously utilized to elaborate solid sensing surfaces. This was done by synthesizing a new BTP derivative and covalently anchoring it onto gold surfaces. The BTP grafting, its…

Physical Chemistry Chemical Physics, 2010, 12 (23), pp.6099-6106. ⟨10.1039/b921389a⟩. ⟨hal-00604780⟩

• Article dans une revue

Advances in the preparation of supported gold catalysts: Mechanism of deposition, simplification of the procedures and relevance of the elimination of chlorine

Antoine Hugon, Nadia El Kolli, Catherine Louis

The paper focuses on the chem. mechanisms involved during the prepn. of gold catalysts supported on alumina and titania and on attempts to simplify the procedures of prepn. Three methods involving the same gold loading (1 wt%) and the same precursor, HAuCl4, were studied: impregnation in excess of…

Journal of Catalysis, 2010, 274 (2), pp.239-250. ⟨10.1016/j.jcat.2010.07.008⟩. ⟨hal-00604725⟩

• Article dans une revue

Investigation of oxide catalysts activity in the NOx neutralization with organic reductants

W. Turek, A. Plis, Patrick da Costa, A. Krzton

Temp.-programmed desorption of NO (TPD) and temp.-programmed redn. of NO by propene and ethanol (TPSR) over the catalyst with redox properties and the structure of spinels - Co3O4 and CoFe2O4 - were investigated. The TPD expts. can det. the temp. range in which the deNOx proceeds and provide…

Applied Surface Science, 2010, 256 (17), pp.5572-5575. ⟨10.1016/j.apsusc.2009.12.149⟩. ⟨hal-00604810⟩

• Article dans une revue

Probing acid-base sites in vanadium redox zeolites by DFT calculation and compared with FTIR results

Frederik Tielens, Stanislaw Dzwigaj

Ab initio periodic DFT calculations in combination with experimental FTIR of adsorption pyridine investigations have been used to study the acid-base properties of vanadium doped zeolite materials. It is evidenced that VO-H groups of V(V) and V(IV) framework sites are more acidic than SiO-H groups…

Catalysis Today, 2010, 152 (1-4), pp.66-69. ⟨10.1016/j.cattod.2009.09.006⟩. ⟨hal-00604806⟩

• Article dans une revue

Mesoporous materials from zeolite seeds as supports for nickel tungsten sulfide active phases Part 1. Characterization and catalytic properties in hydrocracking reactions

Shuangqin Zeng, Juliette Blanchard, Michèle Breysse, Dadong Li, Hong Nie, Yahua Shib, Xintian Su

MCM-41 aluminosilicate mesostructures (Si/Al = 18) with hexagonal long-range order were assembled from protozeolitic nanoclusters (zeolite seeds) that normally nucleate the crystn. of b-zeolite (BEA). Depending on the duration of the thermal treatment leading to the zeolite seeds, different acidic…

Applied Catalysis A : General, 2005, 294, pp.59-67. ⟨10.1016/j.apcata.2005.07.015⟩. ⟨hal-00080297⟩

• Chapitre d'ouvrage

Electrochemistry for mechanically assisted corrosion, concepts, tests, modelling and studied cases

Sabrina Marcelin, Bernard Normand, Roland Oltra, Vincent Vivier

Mechanics - Microstructure - Corrosion Coupling: Concepts, Experiments, Modeling and Cases, 2019. ⟨hal-04885201⟩

• Communication dans un congrès

Mesoporous alumina of controlled pore size obtained by surface alumination of pure silica SBA 15

Emmanuel de La Rochefoucauld, Xavier Carrier, Jean-Marc Krafft, Juliette Blanchard

Silica-alumina oxide supports were synthesized by surface alumination of mesoporous silica SBA-15 with Al isopropoxide in organic solvents. These materials were characterised by N2 adsorption-desorption isotherms, XRD, 27Al NMR and cumene cracking. The chemical nature of the surface was probed by…

Scientific Bases for the Preparation of Heterogeneous Catalysts, Proceedings of the 9th International Symposium, 2006, France. pp.13-20. ⟨hal-00096788⟩

• Article dans une revue

Atomic level characterization and sulfur resistance of unsupported W2C during dibenzothiophene hydrodesulfurization. Classical kinetic simulation of the reaction

Marek Lewandowski, Agnieszka Szymanska-Kolasa, Céline Sayag, Patricia Beaunier, Gérald Djéga-Mariadassou

The stability of unsupported W2C tungsten carbide and its sulfur resistance during hydrodesulfurization (HDS) of dibenzothiophene (DBT) are a specificity of W2C. This material was characterized by X-ray diffraction, specific surface area measurements, HRTEM associated with EDS, lattice images,…

Applied Catalysis B: Environmental, 2014, 144, pp.750-759. ⟨10.1016/j.apcatb.2013.08.011⟩. ⟨hal-00960672⟩

• Article dans une revue

Vibrational and electrical investigations of a uniaxially stretched polystyrene/carbon nanotube composite

Liliane Bokobza, Gilles Garnaud, Patricia Beaunier, Jean-Luc Bruneel

Multiwall carbon nanotube (MWCNT)/polystyrene (PS) composite materials were prepared in the absence and in the presence of a surfactant. TEM analysis reveals the formation of chains made of several nanotubes tied up together upon application of the surfactant while an almost random distribution is…

Vibrational Spectroscopy, 2013, 67, pp.6-13. ⟨10.1016/j.vibspec.2013.03.002⟩. ⟨hal-00914572⟩