A5052010819- Petroleum Processing and Analysis
- Hydrocarbon exploration and reservoir analysis
- Mass Spectrometry Techniques and Applications
- Pharmacological Effects and Assays
- Photochromic and Fluorescence Chemistry
- Photoreceptor and optogenetics research
- Adipose Tissue and Metabolism
- Thermography and Photoacoustic Techniques
- Neuroscience of respiration and sleep
- Porphyrin and Phthalocyanine Chemistry
- Enhanced Oil Recovery Techniques
- Nitric Oxide and Endothelin Effects
- Oil, Gas, and Environmental Issues
- Field-Flow Fractionation Techniques
- Spectroscopy and Quantum Chemical Studies
Centre National de la Recherche Scientifique
2020-2024
Chimie ParisTech
2024
Laboratoire Interdisciplinaire des Énergies de Demain
2024
Université Paris Cité
2024
Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux
2020-2023
Université de Pau et des Pays de l'Adour
2020-2023
Central University of Venezuela
2018-2023
The aggregation behavior of model molecules asphaltene subfractions A1 and A2 dissolved in heptane, toluene, tetrahydrofuran (THF) were studied using molecular dynamics simulations. proposed models are based on previously structures with two new models, including a highly aromatic prominent island-type molecule another archipelago-type architecture. mechanisms THF, heptane solvents studied. results toluene consistent the solubility asphaltenes their these solvents. size aggregates is...
The physical chemistry of the heavyweight fraction crude oil is still a subject vivid discussions due to complications which arise from tendency this aggregate and finally hinder refining processes. Asphaltene molecules, that compose largest part fraction, can be separated into two subfractions, A1 A2, through treatment with p-nitrophenol. In paper, starting molecule models suggested by Acevedo et al. (Acevedo Energy Fuels 2018, 32, 6669−6677.), we screened chemical structure composition...
Super high-molecular-weight (SHMW) asphaltene aggregates, hereafter called clusters, have been observed for the first-time using gel permeation chromatography with inductively coupled plasma mass spectrometry (GPC-ICP HR MS). Presumably these clusters are composed by nanoaggregates joined physical interactions such as polar and dispersion forces. These were three asphaltenes samples (Hamaca, Cerro Negro Boscan) in their corresponding subfractions, A1 (insoluble toluene) A2 (soluble toluene)....
Abstract Light‐responsive shape‐changing polymers are photonastic materials: they can convert light into mechanical energy through macroscopic transformations. Indeed, photochromic molecules embedded in these polymer films present light‐induced structural modifications that trigger a significant deformation. In this theoretical study based on molecular dynamics simulations, analysis tools ranging from atomic to supramolecular scales developed investigate phenomenon. To purpose, model system...
Solutions of nanofluids composed dispersed metal-nanoparticles in water, possess exceptional thermo-optical properties. In the present work was studied variation properties with different surfactants. It used single-pulsed laser excitation dual-beam mode- mismatched termal lens spectroscopy (TLS) for liquid samples. An experimental set-up TLS and thermal diffusibility dn/dT value were studied, this an Ar+ (514nm 15.4mW) as beam a He-Ne (635nm) probe beam. The experiment showed that is...