A5072408618- Radioactive element chemistry and processing
- Chemical Synthesis and Characterization
- Extraction and Separation Processes
- Asymmetric Hydrogenation and Catalysis
- Chemical Synthesis and Reactions
- Oxidative Organic Chemistry Reactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Lanthanide and Transition Metal Complexes
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Analytical chemistry methods development
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Catalysis for Biomass Conversion
- Catalysis and Oxidation Reactions
- Chemical Synthesis and Analysis
- Nanomaterials for catalytic reactions
- Magnetism in coordination complexes
- Membrane Separation Technologies
- Metal Extraction and Bioleaching
- Metal complexes synthesis and properties
- Supramolecular Chemistry and Complexes
- Advanced Synthetic Organic Chemistry
- Ionic liquids properties and applications
- Molecular Sensors and Ion Detection
Conservatoire National des Arts et Métiers
2013-2024
Centre National de la Recherche Scientifique
2011-2024
Université Claude Bernard Lyon 1
2012-2024
École d'Ingénieurs en Chimie et Sciences du Numérique
2013-2024
Laboratoire des systèmes et applications des technologies de l'information et de l'énergie
2024
Catalyse
1998-2023
Laboratoire de Génie des Procédés Catalytiques
2013-2020
Forum Réfugiés - Cosi
2014-2016
Institut de Chimie et Biochimie Moléculaires et Supramoléculaires
2006-2014
École Normale Supérieure - PSL
2013
Abstract Improving the sensitivity of magnetic resonance imaging (MRI), a powerful non‐invasive medical technique, requires development novel contrast agents with higher efficiency than gadolinium chelates such as DTPA:Gd (DTPA: diethylenetriaminepentaacetic acid) that are currently used for clinical diagnosis. To achieve this objective, strategy we have explored involves use gold nanoparticles carriers chelates. These obtained by reducing salt in presence dithiolated derivative DTPA....
A safe, straightforward, and atom economic approach for the oxidation of aliphatic aldehydes to corresponding carboxylic acids within a continuous flow reactor is reported. Typically, reaction performed at room temperature using 5 bar oxygen in PFA tubing does require neither additional catalysts nor radical initiators except those already contained starting materials. In some cases, catalytic amount Mn(II) catalyst added. Such process may prove be valuable alternative traditionally...
The mechanism of acceptorless dehydrogenative coupling reaction (ADC) alcohols to esters catalyzed by aliphatic pincer PHNP ruthenium complexes was experimentally studied. Relevant intermediate species involved in the catalytic cycle were isolated and structurally characterized single-crystal X-ray diffraction studies, their reactivity (including toward substrates related process) probed. VT NMR studies unveiled several chemical exchanges connecting Ru amido hydride, alkoxide, alcohol...
To produce ultra low-sulfur gasoline and meet the new regulations, improvement of HDS reaction by removal inhibitors, like nitrogen-containing compounds (N-compounds) commonly found in middle distillates used for diesel feed, could be worth considering. Liquid–liquid extraction using 1-butyl-3-methyl-imidazolium chloride (BMIm+Cl−) was to a very promising approach neutral N-compounds with high selectivity towards sulfur. BMIm+Cl− first evaluated synthetic solution dibenzothiophene carbazole...
The reduction mechanism of tertiary phosphine oxides by Ti(OiPr)4/hydrosiloxane was studied. Strong improvement achieved using a drying agent. ESR spectra the reaction mixture give evidence for single electronic transfer (SET) mechanism.
The hydroformylation of olefins (oxo synthesis) is the most important process for production higher aldehydes (>C4). liquid phase oxidation latter to carboxylic acids by molecular oxygen or air has been known more than 150 years and an industrially process. However, in recent literature, several different oxidizing reagents catalytic processes have reported this but them limitations as they use environmentally unacceptable unnecessarily sophisticated conditions. Herein, we re-evaluated...
The organocatalyzed aerobic oxidation of aldehydes to acids was reproduced from the original report. In- and ex-situ analysis reaction mixture as function time reveals that, unlike claim in publication, aromatic aliphatic leads predominantly formation peracids. latter are transformed into corresponding carboxylic during workup procedure. buildup peracids solution poses safety problems that should not be overlooked. This finding has also an influence on way new catalysts investigated improve...
Adsorptive removal of hydrodesulfurization inhibitors, that is, nitrogen-containing compounds (N-compounds), was studied using model fuel which contains carbazole and dibenzothiophene in an n-dodecane−toluene mixture over ion-exchange resins (IXRs) batch fixed-bed adsorption systems. The adsorptive capacity selectivity for neutral N-compounds were examined. high affinity present hydrocarbon feed explained by hydrogen bonding between the chloride anion (with nonbonding electrons) N-compounds....
Extraction of neutral nitrogen-containing compounds (N-compounds) has been investigated with chloride based ionic liquids (ILs) varying cation classes (imidazolium, pyridinium). ILs were first discriminated by their mutual solubility and model fuel. Low 1-butyl-3-methylimidazolinium (BMImCl) 1-octylpyridinium (OcPyCl) in the fuel was observed. The then evaluated using a synthetic solution dibenzothiophene carbazole as compounds, high selectivity for N-compounds found. BMImCl OcPyCl...
Control of the single atom/nanoparticle ratio allows preparation highly active Pd/C hydrogenation catalysts integrating ultra-rational use Pd.
Abstract Pd/C catalysts are widely used for hydrogenation reactions in the chemical industry. One of reasons their high activity is ability Pd nanoparticles (Pd NP ) to dissociate H 2 and promote H‐spillover. Nevertheless, selective unpromoted show disappointing results. The use supported single atom SA permits achieve selectivity. However, low because they have difficulty activating . A cooperative catalysis between operates alkenes thanks H‐spillover, which makes it possible obtain active...
A new procedure for the concentration of uranium, dissolved in seawater with extremely low concentration, was studied. Plate module membrane filtration equipment operated to evaluate performance and selectivity four different nanofiltration flat sheet membranes. Experiments were first carried out using model waters. The membranes discriminating by rejection calcium, sodium. Then, a uranium test showing highest toward alkaline alkaline-earth ions has been performed on natural seawater. shows...
Tangential streaming potential technique is an attractive way to characterize the electrokinetic properties of various kinds materials such as films or flat membranes with a dense porous structure. However, interpretation data in terms zeta usually carried out by doing implicit assumption nonconducting substrates. In present paper, we investigate commercial ultrafiltration membrane, structure which affects because and conduction currents involved process do not flow through identical paths...
π-Acceptor molecules covalently attached on hydrophilic support were used to selectively remove neutral nitrogen heterocyclic compounds from diesel feed by a charge transfer mechanism. Functionalized polymers can effectively adsorb with high selectivity toward sulfur model and real feed. The results showed that processes coupled an ion-exchange process basic are efficient enough produce denitrogenated in yield. This study was conducted determine whether trends hydrodesulfurization (HDS)...
A one-pot procedure for the synthesis of unsymmetrical alkyl-substituted secondary phosphine oxides is described. The sequential addition N-benzylaniline to a solution dichlorophenylphosphine and 1-methylimidazole in methylcyclohexane, separating protic ionic liquid formed, Grignard reagent followed by hydrolysis gave (SPOs) high yield. use liquids first step essential streamlined synthesis. Unsymmetrical SPOs could be quantitatively reduced using catalytic amount Ti(OiPr)4...