Size Distributions of Sulfur, Vanadium, and Nickel Compounds in Crude Oils, Residues, and Their Saturate, Aromatic, Resin, and Asphaltene Fractions Determined by Gel Permeation Chromatography Inductively Coupled Plasma High-Resolution Mass Spectrometry

German Gascon; Vicmary Vargas; Llinaber Feo; Olga Castellano; Jimy Castillo; Pierre Giusti; Socrates Acavedo; Charles-Philippe Lienemann; Brice Bouyssière

Size Distributions of Sulfur, Vanadium, and Nickel Compounds in Crude Oils, Residues, and Their Saturate, Aromatic, Resin, and Asphaltene Fractions Determined by Gel Permeation Chromatography Inductively Coupled Plasma High-Resolution Mass Spectrometry

German Gascon ^{1, 2, 3} Vicmary Vargas ^{3, 2, 4} Llinaber Feo ¹ Olga Castellano ¹ Jimy Castillo ⁴ Pierre Giusti ⁵ Socrates Acavedo ⁴ Charles-Philippe Lienemann ⁶ Brice Bouyssière ^{2, 7}

1 PDVSA - Petroleos de Venezuela

2 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

3 Total laboratoire C2MC

4 UCV - Universidad Central de Venezuela

5 TRTG - TOTAL Research & Technology Gonfreville

6 IFPEN - IFP Energies nouvelles

7 Total laboratoire C2MC

Abstract : The size distributions of sulfur (S), vanadium (V), and nickel (Ni) compounds in four crude oils, two residues, and their saturate, aromatic, resin, and asphaltene (SARA) fractions were determined using gel permeation chromatography (GPC) coupled to inductively coupled plasma high-resolution mass spectrometry (ICP HR MS). The results show trimodal distributions of V, Ni, and S compounds in the crude oils and residues. V and Ni compounds are present in both resins and asphaltenes. Trimodal distributions are clearly apparent in the resins but not apparent in the asphaltenes. In the latter, the predominant compounds have a high molecular weight (HMW), even when the solution of asphaltenes is diluted by 40000-fold. In the resins, compounds with a medium molecular weight (MMW) were expected; however, HMW compounds were observed, indicating that nanoaggregates or large molecules exist in both the asphaltenes and resins. Low-molecular-weight (LMW) compounds are predominantly present in the resins and do not represent more than 22% of V and Ni present in crude oil. These compounds appear to have molecular weights similar to simple metalloporphyrins.

Document type :

Journal articles

Domain :

Chemical Sciences

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https://hal-ifp.archives-ouvertes.fr/hal-01755104
Contributor : Françoise Bertrand <>
Submitted on : Friday, March 30, 2018 - 1:41:29 PM
Last modification on : Sunday, April 7, 2019 - 2:50:05 PM

Size Distributions of Sulfur, Vanadium, and Nickel Compounds in Crude Oils, Residues, and Their Saturate, Aromatic, Resin, and Asphaltene Fractions Determined by Gel Permeation Chromatography Inductively Coupled Plasma High-Resolution Mass Spectrometry

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Size Distributions of Sulfur, Vanadium, and Nickel Compounds in Crude Oils, Residues, and Their Saturate, Aromatic, Resin, and Asphaltene Fractions Determined by Gel Permeation Chromatography Inductively Coupled Plasma High-Resolution Mass Spectrometry

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