• Article dans une revue

How Surface Hydroxyls Enhance MgO Reactivity in Basic Catalysis: The Case of Methylbutynol Conversion

Petitjean Hugo, Hazar Guesmi, Lauron-Pernot Hélène, Costentin Guylène, David Loffreda, Philippe Sautet, Françoise Delbecq

This combined experimental and theoretical study aims at understanding why surface hydroxyl groups may enhance catalytic reactivity of MgO surfaces in basic catalysis, whereas hydroxyls are weakly deprotonating groups. We investigated that reactivity enhancement in the catalytic conversion of 2-…

ACS Catalysis, 2014, 4 (11), pp.4004-4014. ⟨10.1021/cs5010807⟩. ⟨hal-01121971⟩

• Article dans une revue

New Insights into the Structure and Degradation of Alizarin Lake Pigments: Input of the Surface Study Approach

Guanzheng Zhuang, Silvia Pedetti, Yoan Bourlier, Philippe Jonnard, Christophe Méthivier, Philippe Walter, Claire-Marie Pradier, Maguy Jaber

Alizarin (Az) lake is a typical example of madder lake pigments that are widely used in cultural heritages. Previous work focused on the complex formation in solution, theoretical models, and crystallized stoichiometric structures (Az/Al3+ = 1:1 or 2:1). However, the classical recipe for preparing…

Journal of Physical Chemistry C, 2020, 124 (23), pp.12370-12380. ⟨10.1021/acs.jpcc.0c00746⟩. ⟨hal-02887434⟩

• Article dans une revue

Framework Stabilization of Ge-Rich Zeolites via Postsynthesis Alumination

Ff Gao, M Jaber, K Bozhilov, A Vicente, Christian Fernandez, V Valtchev

The use of organic structure directing agents in zeolite syntheses has dramatically extended the number of zeolite structure types during the past decades. However, for about 20% of all known zeolite structure types, the necessary postsynthesis elimination of organic templates by high-temperature…

Journal of the American Chemical Society, 2009, 131 (45), pp.16580-16586. ⟨10.1021/ja904458y⟩. ⟨hal-01711612⟩

• Article dans une revue

Aerosol-assisted self-assembly of hybrid Layered Double Hydroxide particles into spherical architectures

Vanessa Prevot, Claire Szczepaniak, Maguy Jaber

Acetate intercalated NiAl-Layered Double Hydroxide nanoparticles were prepd. by polyol process and further used as building blocks to form hybrid LDH spheres by a spray drying technique. The spherical aggregated LDH particles display a polydispersed size with a diam. ranging from 47 nm to 2 μm.…

Journal of Colloid and Interface Science, 2011, 356 (2), pp.566-572. ⟨10.1016/j.jcis.2011.01.051⟩. ⟨hal-00602949⟩

• Article dans une revue

Fate of L-DOPA in the Presence of Inorganic Matrices: Vectorization or Composite Material Formation?

Maguy Jaber, Meryem Bouchoucha, L. Delmotte, Christophe Méthivier, Jean-Marc Krafft, Jean-François Lambert

Novel bionanocomposite materials were successfully prepared using 2:1 phyllosilicates and an amino acid, L-DOPA. A systematic study of DOPA interactions with these smectites and with a nonporous amorphous silica (Aerosil) used for comparison was undertaken by combining macroscopic information,…

Journal of Physical Chemistry C, 2011, 115, pp.19216-19225. ⟨10.1021/jp205050k⟩. ⟨hal-00670279⟩

• Article dans une revue

Synthesis of texturally biphasic mesoporous carbon-silica composites and carbons

Cristiam F. Santa, Maguy Jaber, Jean L. Guth, Ligia Sierra

We report a new synthesis of texturally biphasic carbon-silica composites and carbons that exhibit high surface areas (up to 1500 m2 g 1), pore volumes (up to 1.9 cm3 g 1) and mesopores (4.6-6.9 nm). The composite materials have ordered mesoporous carbon domains embedded in a disordered mesoporous…

Microporous and Mesoporous Materials, 2013, 173, pp.53-63. ⟨10.1016/j.micromeso.2013.01.033⟩. ⟨hal-00836323⟩

• Communication dans un congrès

Fossilisation expérimentale : interactions minéral-organique

Pierre Jacquemot, Sylvain Bernard, Thomas Georgelin, Jean‐christophe Viennet, Maguy Jaber

Journée du DIM Matériaux anciens et patrimoniaux : Développements méthodologiques en taphonomie, DIM Matériaux anciens et patrimoniaux, Oct 2018, Paris, France. ⟨hal-03969897⟩

• Article dans une revue

Towards metal free supported quaternary ammonium halides catalysts for an optimized cycloaddition of CO 2 onto styrene oxide

Miguel Alonso de La Peña, Matthieu Balas, Julie Kong, Richard Villanneau, Lorraine Christ, A. Tuel, Franck Launay

The present work reports on a large selection of porous siliceous materials functionalised by quaternary ammonium salts (QAS) with various pores structures, possible doping with Zn2+, and different ammonium salt substituents as well as halide counter-ions. After characterization by TGA, N2…

Catalysis science and Technology, 2024, 14 (5), pp.1305-1317. ⟨10.1039/d3cy01551c⟩. ⟨hal-04562849⟩

• Article dans une revue

Ready-to-be-addressed oxo-clusters: individualized, periodically organized and separated from the substrate

Juba Salhi, Jan Patrick Calupitan, Michele Mattera, David Montero, Antoine Miche, Régina Maruchenko, Anna Proust, Guillaume Izzet, David Kreher, Imad Arfaoui, Florence Volatron

The first periodically organized individual polyoxometalates: from long-scale range to single-molecule level characterizations.

Nanoscale, 2023, 32, ⟨10.1039/d3nr02649c⟩. ⟨hal-04180597⟩

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Exploring the Reactivity of Framework Vanadium, Niobium, and Tantalum Sites in Zeolitic Materials Using DFT Reactivity Descriptors

Frederik Tielens

The acid-base properties of zeolites with group 5 transition metal framework sites are investigated, and a first step into the understanding of their acid/base and redox properties is undertaken using DFT reactivity descriptors. It is evidenced, using socialite as model system, that zeolites with…

Journal of Computational Chemistry, 2009, 30 (12), pp.1946-1951. ⟨10.1002/jcc.21192⟩. ⟨hal-01361363⟩