典型文献
Study on the Mechanism of Asphaltenes Reducing Oil-Water Interfacial Tension
文献摘要：
As high polar components of crude oil,asphaltenes play a significant role in reducing oil-water interfacial tension(IFT).In this paper,the effects of asphaltenes on reducing IFT in the presence of surfactant were compared,and the mechanism of asphaltenes reducing the IFT was studied by the dynamic interfacial tension(DIFT)equation.Whether asphaltenes were added to the oil or 2,5-dimethyl-4-(4-dodecyl)benzene sodium sulfonate(p-S14-4)was added to the water phase,either of all results in the IFT reducing and the IFT is related to the coverage and the mass of asphaltenes adsorption at the interface.In the presence of asphaltenes,the adsorption of the active substances to the interface is not entirely dependent on diffusion,and the process can be divided into three regions.Region Ⅰ:the IFT rapidly reducing,this process is controlled by diffusion of surfactant;Region Ⅱ:the IFT reducing slowly,resulted from the lower diffusion rate that is limited due to the aggregates formed by the interaction of asphaltene-asphaltene;Region Ⅲ:the interaction of asphaltene-asphaltene is broken by the interaction of surfactant-asphaltene.The asphaltene aggregates are reduced and adsorbed rapidly at the interface.Furthermore,the results reveal that the asphaltenes concentration affects the coverage rate and adsorption at the interface.
文献关键词：
中图分类号：
作者姓名：
WANG Yuwen;CHENG Tiexin;ZHOU Guangdong
作者机构：
Institute of Physical Chemistry,College of Chemistry,Jilin University,Chang-chun 130021,P.R.China
文献出处：
引用格式：
[1]WANG Yuwen;CHENG Tiexin;ZHOU Guangdong-.Study on the Mechanism of Asphaltenes Reducing Oil-Water Interfacial Tension)[J].高等学校化学研究（英文版）,2022(02):616-621
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B类：
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AB值：
0.441322
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