Applications of Pulsed Electron Paramagnetic ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
Applications of Pulsed Electron Paramagnetic Resonance Spectroscopy to the Identification of Vanadyl Complexes in Asphaltene Molecules. Part 1: Influence of the Origin of the Feed
Auteur(s) :
Ben Tayeb Meziane, Karima [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Delpoux, Olivier [Auteur]
IFP Energies nouvelles [IFPEN]
Barbier, Jérémie [Auteur]
IFP Energies nouvelles [IFPEN]
Marques, Joao [Auteur]
IFP Energies nouvelles [IFPEN]
Verstraete, Jan [Auteur]
IFP Energies nouvelles [IFPEN]
Vezin, Herve [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Delpoux, Olivier [Auteur]
IFP Energies nouvelles [IFPEN]
Barbier, Jérémie [Auteur]
IFP Energies nouvelles [IFPEN]
Marques, Joao [Auteur]
IFP Energies nouvelles [IFPEN]
Verstraete, Jan [Auteur]
IFP Energies nouvelles [IFPEN]
Vezin, Herve [Auteur]

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Titre de la revue :
Energy & Fuels
Nom court de la revue :
Energy Fuels
Numéro :
29
Pagination :
4608-4615
Éditeur :
American Chemical Society (ACS)
Date de publication :
2015-06-25
ISSN :
1520-5029
Mot(s)-clé(s) en anglais :
Hydrocarbons
Electron paramagnetic resonance spectroscopy
Vanadium
Nitrogen
Aromatic compounds
Electron paramagnetic resonance spectroscopy
Vanadium
Nitrogen
Aromatic compounds
Discipline(s) HAL :
Chimie/Chimie théorique et/ou physique
Résumé en anglais : [en]
The most abundant metals in heavy feedstocks, vanadium and nickel, are mainly concentrated in the asphaltene fraction, a petroleum fraction that precipitates in the presence of paraffinic solvents. Characterization of ...
Lire la suite >The most abundant metals in heavy feedstocks, vanadium and nickel, are mainly concentrated in the asphaltene fraction, a petroleum fraction that precipitates in the presence of paraffinic solvents. Characterization of vanadium and nickel complexes is therefore important to the development of demetalation and conversion strategies used to process heavy crude oils. The dependence of vanadyl structures upon the geographic origin of feedstocks and their evolution during hydroprocessing in an ebullated-bed pilot unit were studied. The aim of this contribution is to assess the possibilities of the electron paramagnetic resonance (EPR) spectroscopy to provide information on the structure of the vanadyl species. This work shows that pulsed EPR spectroscopy is a powerful technique that allows us to distinguish several types of environments of vanadium species, among which are porphyrinic ligands, even in very complex samples, such as C7 asphaltenes, from heavy feedstocks.Lire moins >
Lire la suite >The most abundant metals in heavy feedstocks, vanadium and nickel, are mainly concentrated in the asphaltene fraction, a petroleum fraction that precipitates in the presence of paraffinic solvents. Characterization of vanadium and nickel complexes is therefore important to the development of demetalation and conversion strategies used to process heavy crude oils. The dependence of vanadyl structures upon the geographic origin of feedstocks and their evolution during hydroprocessing in an ebullated-bed pilot unit were studied. The aim of this contribution is to assess the possibilities of the electron paramagnetic resonance (EPR) spectroscopy to provide information on the structure of the vanadyl species. This work shows that pulsed EPR spectroscopy is a powerful technique that allows us to distinguish several types of environments of vanadium species, among which are porphyrinic ligands, even in very complex samples, such as C7 asphaltenes, from heavy feedstocks.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
CNRS
Collections :
Équipe(s) de recherche :
Propriétés magnéto structurales des matériaux (PMSM)
Date de dépôt :
2021-06-17T13:47:46Z
2021-09-07T06:55:02Z
2021-09-10T10:29:08Z
2021-09-07T06:55:02Z
2021-09-10T10:29:08Z