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
收藏
页码：1162 / 1168
页数：7
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