Characteristics of Asphaltene Fractions Responsible for the Formation of Stable Water-Oil Emulsions

被引：1

作者：

Ganeeva, Yu. M. ^{[1
]}

Barskaya, E. E. ^{[1
]}

Okhotnikova, E. S. ^{[1
]}

Gazylzyanova, G. R. ^{[1
]}

Yusupova, T. N. ^{[1
]}

Karabut, Yu. L. ^{[1
]}

Kemalov, R. A. ^{[2
]}

机构：

[1] Russian Acad Sci, Arbuzov Inst Organ & Phys Chem, FRC Kazan Sci Ctr, Kazan, Russia

[2] Kazan Fed Univ, Inst Geol & Petr Technol, Kazan, Russia

来源：

CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS | 2024年 / 59卷 / 06期

关键词：

asphaltenes; asphaltene aggregates; water-oil emulsions; stability of water-oil emulsions; SUBFRACTIONS; STABILITY;

D O I：

10.1007/s10553-024-01631-y

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：

Stable water-oil emulsions are formed due to the strong armor layer at the oil/water interface able to prevent the coalescence of water droplets in oil. The stability of water-oil emulsions obtained by mixing solutions of asphaltene in toluene and in heptol (a mixture of n-heptanol and toluene) with distilled water was found to be a function of two asphaltene fractions, namely, a fraction soluble in heptol enriched with ester fragments and a fraction tending to form aggregates in heptol. The surfactant properties of the first fraction permit the formation of a thin shell with low mechanical strength at the oil/water interface. The asphaltene aggregates adsorbed onto this thin shell are compacted over time, imparting rigidity and mechanical strength to the oil/water interface layer.

引用

页码：1162 / 1168

页数：7

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