Title :

Exploration of the Reactivity of Heteroatomic Compounds Contained in Vacuum Gas Oils during Hydrotreatment Using Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

Author(s) :

Guillemant, Julie [Auteur]
IFP Energies nouvelles [IFPEN]
Berlioz-Barbier, Alexandra [Auteur]
IFP Energies nouvelles [IFPEN]
de Oliveira, Luis Pereira [Auteur]
IFP Energies nouvelles [IFPEN]
Albrieux, Florian [Auteur]
IFP Energies nouvelles [IFPEN]
Lacoue-Nègre, Marion [Auteur]
IFP Energies nouvelles [IFPEN]
Duponchel, Ludovic [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Joly, Jean-François [Auteur]
IFP Energies nouvelles [IFPEN]

Journal title :

Energy & Fuels

Volume number :

34

Pages :

10752-10761

Publication date :

2020

HAL domain(s) :

Planète et Univers [physics]/Sciences de la Terre

English abstract : [en]

When studying the evolution of refractory species during hydrotreatment, the polyheteroatomic compounds containing both nitrogen and sulfur or nitrogen and oxygen atoms are sometimes neglected. However, even a low amount ...
Show more >When studying the evolution of refractory species during hydrotreatment, the polyheteroatomic compounds containing both nitrogen and sulfur or nitrogen and oxygen atoms are sometimes neglected. However, even a low amount of these compounds could reduce the efficiency of the removal of N1 or S1 compounds, which is the main target of hydrotreatment. In this paper, three different vacuum gas oil feedstocks were analyzed along with their corresponding hydrotreated samples using electrospray ionization (ESI(+) and ESI(−)) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) analyses. The evolution of the aromaticity and the alkylation of the polyheteroatomic compounds during hydrotreatment were followed using double bond equivalent (DBE) versus the number of carbon atoms (DBE = f(#C) plots). Moreover, as the hydrotreated samples were produced using the same operating conditions, the reactivity of the different feeds has been assessed. Finally, an additional hydrotreated sample was produced using a higher temperature and analyzed, allowing us to monitor the impact of temperature on the removal of the heteroatomic species. From a general point of view, basic polyheteroatomic species are more refractory than neutral or acidic polyheteroatomic species. It has also been shown that depending on the heteroatomic class considered, the hydrotreated samples could exhibit different aromaticity and alkylation distributions, whereas the distributions of the feeds were similar, which is characteristic of different hydrotreatment mechanisms. Finally, the positive impact of higher operating temperature on the removal of most of the species but in different ratios has been clearly demonstrated. This study takes advantage of FT-ICR MS to monitor the evolution of refractory species during hydrotreatment as well as being a powerful tool to put forward the reactivity differences between several feedstocks or study the impact of hydrotreatment operating conditions.Show less >

Audience :

Non spécifiée

Popular science :

Non

Administrative institution(s) :

ENSCL
CNRS
Université de Lille

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Research team(s) :

Propriétés magnéto structurales des matériaux (PMSM)

Submission date :

2024-02-21T17:12:01Z
2024-02-23T10:20:32Z
2024-02-23T11:38:57Z