A5106763396- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Zeolite Catalysis and Synthesis
- Catalysis and Hydrodesulfurization Studies
- Radioactive element chemistry and processing
- Mesoporous Materials and Catalysis
- Gas Sensing Nanomaterials and Sensors
- Ammonia Synthesis and Nitrogen Reduction
- Nuclear Materials and Properties
- Metal-Organic Frameworks: Synthesis and Applications
- Nuclear Physics and Applications
- Industrial Gas Emission Control
- Chemical Synthesis and Characterization
- Luminescence Properties of Advanced Materials
- Radioactive contamination and transfer
- Catalysts for Methane Reforming
- Nanomaterials for catalytic reactions
- Cultural Insights and Digital Impacts
- Polyoxometalates: Synthesis and Applications
- Radioactive Decay and Measurement Techniques
- Radioactivity and Radon Measurements
- Laser-induced spectroscopy and plasma
- Thermography and Photoacoustic Techniques
- Clay minerals and soil interactions
- High-pressure geophysics and materials
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
1996-2022
Sorbonne Université
2004-2022
CEA DAM Île-de-France
1996-2022
Institut national d'histoire de l'art
2022
Centre de Recherches sur l’Extrême Orient de Paris – Sorbonne
2022
Sorbonne Paris Cité
2022
École Nationale Supérieure d'Ingénieurs de Caen
2007-2021
Normandie Université
2017-2021
Centre National de la Recherche Scientifique
2011-2021
Université de Caen Normandie
2009-2021
Over the past 60 years, diamond anvil cell (DAC) has been developed into a widespread high static pressure device. The adaptation of laboratory and synchrotron analytical techniques to DAC enables detailed exploration in 100 GPa range. strain anvils under load explains 400 limit conventional DAC. Here we show toroidal shape for tip that extend use toward terapascal toroidal-DAC keeps assets complete, reproducible, accurate characterization materials, from solids gases. Raman signal or X-ray...
FTIR spectroscopy coupled with mass spectrometry has been used to study the mechanism of methanol oxidation at low temperatures on nanostructured Au/CeO2 and Au/TiO2 catalysts. Activity selectivity toward CO2 have investigated through simultaneous analysis adsorbed surface species gaseous species, some key steps in pathway, active sites, intermediate are proposed. Among detected kinds methoxy formed support were identified as intermediates, which further transform into formates whose was...
In the frame of nuclear safeguards, knowledge chemical form (stoichiometry) uranium compounds present in micrometric particulate material sampled by wiping surfaces an inspected facility may point out industrial process implemented installation. Micro‐Raman spectroscopy (MRS) coupled with scanning electron microscopy (SEM) has been used for first time to analyze micrometer‐size particles various oxides [UO 2 , U 3 O 8 UO and 4 · 4(H O)] deposited on carbon disks. Uranium are detected means...
A series of progressively proton-exchanged sodium mordenite was studied by FTIR spectroscopy in the presence probe molecules to precise location protons and ions structure MOR. The atomic ratio between unconstrained constrained environments fully exchanged 2:1 as shown adsorption both pyridine CO. On contrary, this 1:2 for Na+ cations parent Na-mordenite deduced from CO formation NaNO3 NO + O2 reaction. Therefore, some framework Al atoms lead OH groups acidic form but form. This observation,...
The adsorption/desorption of various nitriles on mordenite type zeolites has been studied by FTIR spectroscopy. two different hydroxy groups present in give rise to distinct interactions with as probe molecules. As soon the adsorbed nitrile is small enough penetrate side pockets and react acid located inside, a very strong interaction appears leading typical high frequency stretching vibration ν(CN)HF. paper indicates that there no proton transfer from zeolite at room temperature. Such ν(CN)...
FTIR spectroscopy was applied to the investigation of nitrosyl complexes formed with extra-framework iron species in Fe-ferrierite (Fe-FER). To clarify loading effect on nature formed, six ferrierites Fe loadings varying between 0 and 3.7 wt % were prepared via ionic exchange investigated. A Fe/SiO2 a Fe-FER sample containing oxide also studied for comparison purposes. Adsorption NO (containing no species) gives different species, sites can be evidenced depending concentration. The bands are...