SEPARATION AND CHARACTERIZATION OF ASPHALTENIC SUBFRACTIONS

被引：35

作者：

Honse, Siller O. ^{[1
]}

Ferreira, Silas R. ^{[1
]}

Mansur, Claudia R. E. ^{[1
]}

Lucas, Elizabete F. ^{[1
]}

Gonzalez, Gaspar ^{[2
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Macromol Profa Eloisa Mano, Ilha Fundao, BR-21941598 Rio De Janeiro, RJ, Brazil

[2] Ctr Pesquisas PETROBRAS, BR-21941915 Rio De Janeiro, RJ, Brazil

来源：

QUIMICA NOVA | 2012年 / 35卷 / 10期

关键词：

crude oil; asphaltenes; characterization; CRUDE-OIL; PETROLEUM; STABILITY; AGGREGATION;

D O I：

10.1590/S0100-40422012001000019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structure of the various asphaltenic subtractions found in crude oil was evaluated. For this purpose, C5 asphaltenes were extracted from an asphaltic residue using n-pentane as the flocculant solvent. The different subfractions were isolated from the C5 asphaltenes by the difference in solubility in different solvents. These were characterized by infrared spectroscopy, nuclear magnetic resonance, X-ray fluorescence, elementary analysis and mass spectrometry. The results confirmed that the subfractions extracted with higher alkanes had greater aromaticity and molar mass. However, small solubility variations between the subfractions were attributed mainly to the variation in the concentrations of cyclical hydrocarbon compounds and metals.

引用

页码：1991 / 1994

页数：4

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