Molecular Analysis of Nitrogen Containing Compounds in Vacuum Gas Oils Hydrodenitrogenation by(Esi+/-)-FTICR-MS

Polina Mikhaylova (1) , Luis P. de Oliveira (1) , Isabelle Merdrignac (1) , Alexandra Berlioz-Barbier (1) , Marouan Nemri (2) , Pierre Giusti (2, 3) , Gerhard Pirngruber (1)

1 IFPEN - IFP Energies nouvelles
2 TRTG - TOTAL Research & Technology Gonfreville
3 TRTG - TOTAL Refining & Chemicals

This paper is a part of a study on reactivity descriptors in vacuum gas oil hydrotreatment (VGO HDT). It aims to understand the differences in feeds of various process origins and the corresponding hydrotreated effluents on a molecular level. Four different vacuum gas oils were hydrotreated over a sulfided NiMo/Al2O3 catalyst at a wide range of temperatures and residence times in order to collect HDT effluents at a broad range of hydrodenitrogenation (HDN) conversions. Vacuum gas oils and HDT effluents have been analyzed by Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) in positive ESI(+) and negative ESI(-) electrospray ionization modes to characterize the basic and neutral nitrogen-containing species and the subtleties of HDT transformations depending on the feedstock type.

Keywords: Vacuum gas oil; Hydrotreatment; FTICR-MS

Domains: Chemical Sciences; Environmental Sciences

Polina Mikhaylova, Luis P. de Oliveira, Isabelle Merdrignac, Alexandra Berlioz-Barbier, Marouan Nemri, et al.. Molecular Analysis of Nitrogen Containing Compounds in Vacuum Gas Oils Hydrodenitrogenation by(Esi+/-)-FTICR-MS. Fuel, 2022, 323, pp.124302. ⟨10.1016/j.fuel.2022.124302⟩. ⟨hal-03660667⟩