ASPHALTENE MACROSTRUCTURE BY SMALL-ANGLE NEUTRON-SCATTERING

被引：146

作者：

RAVEY, JC ^{[1
]}

DUCOURET, G ^{[1
]}

ESPINAT, D ^{[1
]}

机构：

[1] INST FRANCAIS PETR,F-92506 RUEIL MALMAISON,FRANCE

来源：

FUEL | 1988年 / 67卷 / 11期

关键词：

Neutrons--Scattering;

D O I：

10.1016/0016-2361(88)90076-2

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：

Small angle neutron scattering has been used for studying the asphaltene macrostructure in liquid dispersions. Thanks to modelling calculations, the experimental data have been interpreted in terms of flat particles or sheets with a diameter in the range (6-20 nm) and a mean thickness of about 0.6-0.8 nm. In tetrahydrofuran, there is a slight concentration effect on this macrostructure. On the other hand, the mean aggregate size is very solvent dependent. Similar shapes and sizes have been found for different asphaltenes extracted from various crude oils. The fact that catalytic hydrotreatment dramatically reduces the mean size of the asphaltenes has also been verified.

引用

页码：1560 / 1567

页数：8

共 34 条

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