Laboratoire de réactivité de surface

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  • Article dans une revue

Effect of vanadium dispersion and of support properties on the catalytic activity of V-containing silicas

Marco Piumetti, Barbara Bonelli, Pascale Massiani, Stanislaw Dzwigaj, Ilenia Rossetti, Sandra Casale, Marco Armandi, Cyril Thomas, Edoardo Garrone

Two V-SBA-15 and V-MCF materials (containing about 2.5 wt.% vanadium) were prepared by direct synthesis and tested as catalysts in the decomposition of the most stable chlorinated-alkane, dichloromethane (a total oxidation reaction) and in the oxidative dehydrogenation (ODH) of propane (a partial…

Catalysis Today, 2011, 179, pp.140-148. ⟨10.1016/j.cattod.2011.06.028⟩. ⟨hal-00687622⟩

  • Article dans une revue

Synthesis, characterization and catalytic activity of meso-niobium phosphate in the oxidation of benzyl alcohols

Michèle C. Reis, Suellen D.T. Barros, Elizabeth R. Lachter, Rosane A.S. San Gil, Jhonny H. Flores, Maria I. Pais da Silva, Thomas Onfroy

In this work mesoporous niobium phosphate was synthesized hydrothermally by using SDS as the structure directing agent. The catalysts were characterized by N2 adsorption, DRX, 31P MAS NMR and FTIR. The activity of commercial and synthesized niobium phosphate catalysts were evaluated through the…

Catalysis Today, 2012, 192, pp.117-122. ⟨10.1016/j.cattod.2012.05.025⟩. ⟨hal-00751901⟩

  • Article dans une revue

Chiral Ammonium-Capped Rhodium(0) Nanocatalysts: Synthesis, Characterization, and Advances in Asymmetric Hydrogenation in Neat Water

Elodie Guyonnet Bil É, Elodie Cortelazzo-Polisini, Audrey Denicourt-Nowicki, Rita Sassine, Franck Launay, Alain Roucoux

Optically active amphiphilic compounds derived from N-methylephedrine, N-methylprolinol, or cinchona derivatives possessing bromide or chiral lactate counterions were efficiently used as protective agents for rhodium(0) nanoparticles. The full characterization of these surfactants and the obtained…

ChemSusChem, 2012, 5, pp.91-101. ⟨10.1002/cssc.201100364⟩. ⟨hal-00750000⟩

  • Article dans une revue

Characterization of zeolitic intraframework molybdenum sites

Gabriella Skara, Rafal Baran, Thomas Onfroy, Frank de Proft, Stanislaw Dzwigaj, Frederik Tielens

An integrated experimental and computational study was carried out on molybdenum loaded BEA zeolite in order to scrutinize the most stable state of the molybdenum site at various oxidation and hydration states. After a two-step post-synthetic process, the incorporation of Mo ions into the vacant T-…

Microporous and Mesoporous Materials, 2016, 225, pp.355-364. ⟨10.1016/j.micromeso.2015.11.062⟩. ⟨hal-01265851⟩

  • Article dans une revue

Highly active and stable Ni/SBA-15 catalysts prepared by a “two solvents” method for dry reforming of methane

M.N. Kaydouh, N El Hassan, A Davidson, S Casale, H El Zakhem, P Massiani

Two series of Ni (2.5 to 7.5 wt%) and Ce (6 wt%) containing SBA-15 catalysts were prepared and tested in dry reforming of methane, a promising route for the production of syngas. Both Ni and Ce species were introduced in the organized mesoporous silica support in the form of nitrate salts using the…

Microporous and Mesoporous Materials, 2016, 220, pp.99-109. ⟨10.1016/j.micromeso.2015.08.034⟩. ⟨hal-01195558⟩

  • Article dans une revue

Catalytic activity and thermostability of enzymes immobilized on silanized surface: Influence of the crosslinking agent

Nesrine Aissaoui, Jessem Landoulsi, Latifa Bergaoui, Souhir Boujday, Jean-François Lambert

In this work, we investigate the influence of crosslinkers on the operational and heat stability of immobilized enzymes on a silanized silicon surface. To this end, glucose-6-phosphate dehydrogenase (G6PDH), a model multimeric enzyme, was attached through bifunctional crosslinkers able to bind…

Enzyme and Microbial Technology, 2013, 52 (6-7), pp.336-43. ⟨10.1016/j.enzmictec.2013.02.018⟩. ⟨hal-01132676⟩

  • Article dans une revue

Direct grafting of ethylene sulfide onto silicic acid magadiite

Michelle Menezes de Oliveira, Marcia Maria Fernandes, Maria Gardennia Fonseca, Edson Cavalcanti da Silva Filho, Antonio Gouveia de Souza, Fabrice Gaslain, Maguy Jaber

Acidic magadiite (HMag) was directly reacted with ethylene sulfide (ES) under various controlled conditions producing an intercalated hybrid silicate (MagS). The sodium, acidic and modified magadiites were characterized using elemental analysis, thermogravimetric analysis (TGA/DTG), infrared…

Microporous and Mesoporous Materials, 2014, 196, pp.292-299. ⟨10.1016/j.micromeso.2014.05.010⟩. ⟨hal-01018650⟩

  • Article dans une revue

Preparation of Highly Anisotropic Cobalt Ferrite/Silica Microellipsoids Using an External Magnetic Field

Sébastien Abramson, Vincent Dupuis, Sophie Neveu, Patricia Beaunier, David Montero

Magnetic cobalt ferrite/silica microparticles having both an original morphology and an anisotropic nanostructure are synthesized through the use of an external magnetic field and nanoparticles characterized by a high magnetic anisotropy. The association of these two factors implies that the ESE (…

Langmuir, 2014, 30 (30), pp.9190-200. ⟨10.1021/la501547q⟩. ⟨hal-01121597⟩

  • Ouvrages

Characterization of Solid Materials and Heterogeneous Catalysts: From Structure to Surface Reactivity, Volume 1&2

Che Michel, Védrine Jacques C.

This two-volume book provides an overview of physical techniques used to characterize the structure of solid materials, on the one hand, and to investigate the reactivity of their surface, on the other. Therefore this book is a must-have for anyone working in fields related to surface reactivity.…

2012, ⟨10.1002/9783527645329⟩. ⟨hal-01121673⟩

  • Article dans une revue

Speciation of Ruthenium as a Reduction Promoter of Silica-Supported Co Catalysts: A Time-Resolved in Situ XAS Investigation

Jingping Hong, Eric Marceau, Andrei Y. Khodakov, Lucia Gaberová, Anne Griboval-Constant, Jean-Sébastien Girardon, Camille La Fontaine, Valérie Briois

Complete reduction of the metal phase in cobalt-containing catalysts is often difficult to reach and can be promoted by a small amount of noble metals. Because these costly promoters are introduced in a very low quantity, their speciation and their chemical interaction with cobalt have seldom been…

ACS Catalysis, 2015, 5 (2), pp.1273-1282. ⟨10.1021/cs501799p⟩. ⟨hal-01120477⟩