Interactions between asphaltenes and naphthenic acids

被引：55

作者：

Östlund, JA

Nydén, M

Auflem, IH ^{[1
]}

Sjöblom, J

机构：

[1] Norwegian Univ Sci & Technol, Dept Chem Engn, Ugelstad Lab, N-7491 Trondheim, Norway

[2] Chalmers Univ Technol, Dept Mat & Surface Chem, S-41296 Gothenburg, Sweden

[3] Octel Corp Bycosin AB, S-65114 Karlstad, Sweden

[4] Statoil ASA, N-7005 Trondheim, Norway

来源：

ENERGY & FUELS | 2003年 / 17卷 / 01期

关键词：

D O I：

10.1021/ef020103y

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Asphaltenes separated from two different North Sea oils were studied upon addition of two kinds of naphthenic acids by employing PFG-SE NMR (pulsed field gradient-spin echo nuclear magnetic resonance) and NIR (near-infrared) spectroscopy. The results indicated that there were interactions between asphaltenes and naphthenic acids. It also appeared as if the tendency of the acids to interact with asphaltenes depended on the asphaltene type. Furthermore, a concentration series of one of the asphaltenes was prepared, and a dramatic decrease in diffusion coefficients upon increased concentration was observed. This suggests that the asphaltenes studied were prone to self-associate in toluene-d(8).

引用

页码：113 / 119

页数：7

共 42 条

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