• Article dans une revue

Microwave bentonite silylation for dye removal: Influence of the solvent

Líbia N.F. Queiroga, Mariana B.B. Pereira, Lucinaldo Silva, Edson Silva Filho, Ieda M.G. Santos, Maria Fonseca, Thomas Georgelin, Maguy Jaber

A series of bentonite silylated samples was prepared with aminopropyltrimethoxy silane over a short period of time (5 min), at 50 °C, using microwave irradiation. The influence of polar and non-polar solvents was investigated. The pristine and modified solids were characterized by structural,…

Applied Clay Science, 2019, 168, pp.478-487. ⟨10.1016/j.clay.2018.11.027⟩. ⟨hal-04022354⟩

• Article dans une revue

An Anthropocene-Framed Transdisciplinary Dialog at the Chemistry-Energy Nexus

Mathieu S Prévot, Valeria Finelli, Xavier Carrier, Gabriele Deplano, Margherita Cavallo, Elsje Alessandra Quadrelli, Juliette Michel, Marie-Hélène Pietraru, Clément Camp, Giulia Forghieri, Anna Gagliardi, Sebastian Seidel, Antoine Missemer, Bertrand Reuillard, Barbara Centrella, Silvia Bordiga, María Grace Salamanca González, Vincent Artero, Keanu V. A. Birkelbach, Niklas von Wolff

At the energy-chemistry nexus, key molecules include carbon dioxide (CO2), hydrogen (H2), methane (CH4), and ammonia (NH3). The position of these four molecules and that of the more general family of synthetic macromolecular polymer blends (found in plastics) were cross-analyzed with the planetary…

Chemical Science, 2024, 15, pp.9054-9086. ⟨10.1039/d4sc00099d⟩. ⟨hal-04611454⟩

• Article dans une revue

On the promoting effect of Au on CO oxidation kinetics of Au-Pt bimetallic nanoparticles supported on SiO2: An electronic effect?

Rachel P. Doherty, Jean-Marc Krafft, Christophe Méthivier, Sandra Casale, Hynd Remita, Catherine Louis, Cyril Thomas

Bimetallic AuPt nanoparticles prepared by radiolysis with Au/Pt atomic ratios of 1.2 and 1.8 were deposited onto silica and calcined to remove the stabilizing polymers. During this sequence, they lose their core-shell structure and restructure as alloys. FTIR and XPS provide evidence for further…

Journal of Catalysis, 2011, 287, pp.102-113. ⟨hal-00687283⟩

• Article dans une revue

Reshaping Dynamics of Gold Nanoparticles under H2 and O2 at Atmospheric Pressure

Adrian Chmielewski, Jun Meng, Beien Zhu, Yi Gao, Hazar Guesmi, Hélène Prunier, Damien Alloyeau, Guillaume Wang, Catherine Louis, Laurent Delannoy, Pavel Afanasiev, Christian Ricolleau, Jaysen Nelayah

Despite intensive research efforts, the nature of the active sites for O2 and H2 adsorption/dissociation by supported gold nanoparticles (NPs) is still an unresolved issue in heterogeneous catalysis. This stems from the absence of a clear picture of the structural evolution of Au NPs at near…

ACS Nano, 2019, 13 (2), pp.2024-2033. ⟨10.1021/acsnano.8b08530⟩. ⟨hal-02019080⟩

• Article dans une revue

Size-induced structural modifications affecting Co3O4 nanoparticles patterned in SBA-15 silicas

Anne Davidson, Irene Lopez, Nissrine El Hassan, Hadjira Guerba, Gilles Wallez

The structure of Co3O4 nanoparticles patterned in SBA-15 silicas is studied. With pore size of 7.3 nm, bundles of oriented particles, with (400) plane parallel to the hexagonal axis, is revealed by HR-TEM. With decreasing pore sizes, structural modifications, suggested by HR-TEM are confirmed by…

Chemistry of Materials, 2006, 18, pp.5828. ⟨hal-00128555⟩

• Communication dans un congrès

How SOFCs can help to turn a fossil fuel to a Kyoto friendly fuel.

F. Gitzhofer, Juliette Blanchard, A.J. Nsungui, Karine de Oliveira-Vigier, N. Abatzoglou, D. Gravelle

International green energy conferences, 2005, Waterloo, Canada. ⟨hal-00293759⟩

• Article dans une revue

Comparative study of physico-chemical, acid–base and catalytic properties of vanadium based catalysts in the oxidehydrogenation of n-butane: effect of the oxide carrier

Samira Slyemi, Akila Barama, Siham Barama, Hassiba Messaoudi, Sandra Casale, Juliette Blanchard

Reaction kinetics, mechanisms and catalysis, 2019, 128 (2), pp.831-845. ⟨10.1007/s11144-019-01653-2⟩. ⟨hal-03981718⟩

• Article dans une revue

Effect of pore geometry of mesoporous supports on catalytic performances in methane reforming

Joy Tannous, Leila Karam, Marie-Nour Kaydouh, Henri El Zakhem, Nissrine El Hassan, Sandra Casale

Catalysts prepared using three dimensional SBA-16 silica support (composed of micropores and cage-like mesopores) were tested in the reaction of methane dry reforming, in comparison with 2D hexagonal mesoporous SBA-15 support. The samples were evaluated by N 2 sorption and X-Ray diffraction (XRD)…

MATEC Web of Conferences, 2018, 171, pp.01003. ⟨10.1051/matecconf/201817101003⟩. ⟨hal-03981700⟩

• Pré-publication, Document de travail

A common precursor to both prebiotic and biological pathways to RNA nucleotides

Andrea Pérez-Villa, Thomas Georgelin, Jean-François Lambert, Marie-Christine Maurel, François Guyot, A. Marco Saitta, Fabio Pietrucci

Understanding the mechanism of spontaneous formation of ribonucleotides under realistic prebiotic conditions is a key open issue of origins-of-life research. In cells, de novo and salvage nucleotide enzymatic synthesis combines 5-phospho-α-D-ribose-1-diphosphate (α-PRPP) and nucleobases.…

2023. ⟨hal-04015892⟩

• Article dans une revue

Carbon Dioxide Reforming of Methane over Nickel-Supported Zeolites: A Screening Study

Carmen Bacariza, Leila Karam, Nissrine El Hassan, José Lopes, Carlos Henriques

As the utilization of zeolites has become more frequent in the dry reforming of methane (DRM) reaction, more systematic studies are required to evaluate properly the influence of zeolites’ composition and framework type on the performance. Therefore, in this work, a step-by-step study was performed…

Processes, 2022, 10 (7), pp.1331. ⟨10.3390/pr10071331⟩. ⟨hal-04030152⟩