Interfacial tension between water and high pressure CO2 in the presence of hydrocarbon surfactants

被引：48

作者：

Akutsu, Takashi ^{[1
]}

Yamaji, Yoshinori ^{[1
]}

Yamaguchi, Hirokazu ^{[1
]}

Watanabe, Masaru ^{[1
]}

Smith, Richard L., Jr. ^{[1
]}

Inomata, Hiroshi ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Res Ctr Supercrit Fluid Technol, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

FLUID PHASE EQUILIBRIA | 2007年 / 257卷 / 02期

关键词：

CO2; water; interfacial tension; surfynol; pendant drop;

D O I：

10.1016/j.fluid.2007.01.040

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Interfacial tension of water-CO2 interface was measured by pendant drop method in the presence of a surfactant of various concentrations. The surfactants used were three surfynols which are non-ionic blanched hydrocarbon with different length of the alkyl side chain. Prior to the interfacial tension measurements, the solubility of the surfynols in CO2 were determined from cloud point method. The measured interfacial tensions indicated that an addition of small amount surfactant did reduce the interfacial tension. The interfacial activities of surfactants were evaluated from the slope of the interfacial tension reduction curve against the surfactant concentration and rationalized in terms of the molecular natures such as hydrophobic alkyl chain length. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：163 / 168

页数：6

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