Highly efficient[C<sub>8</sub>mim][Cl] ionic liquid accompanied with magnetite nanoparticles and different salts for interfacial tension reduction

Sajjad Hashemi; Javad Saien

doi:10.1016/j.cjche.2019.03.023

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Highly efficient[C₈mim][Cl] ionic liquid accompanied with magnetite nanoparticles and different salts for interfacial tension reduction

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- Highly efficient[C₈mim][Cl] ionic liquid accompanied with magnetite nanoparticles and different salts for interfacial tension reduction
- Chinese Journal of Chemical Engineering Vol. 28, Issue 1, Pages: 46-53(2020)
- Affiliations：
  
  Department of Applied Chemistry, Bu-Ali Sina University, Hamedan,Iran
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.03.023
  CLC：
- Published：2020
- Accepted：
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mim][Cl] ionic liquid accompanied with magnetite nanoparticles and different salts for interfacial tension reduction[J]. 中国化学工程学报, 2020, 28(1): 46-53.
DOI：

mim][Cl] ionic liquid accompanied with magnetite nanoparticles and different salts for interfacial tension reduction[J]. 中国化学工程学报, 2020, 28(1): 46-53. DOI： 10.1016/j.cjche.2019.03.023.

摘要

Abstract

The 1-octyl-3-methylimidazolium chloride

mim

]

[Cl

]

ionic liquid (IL) was used as a novel surfactant in

-heptane/water system. The interfacial tensions (IFT) were measured and corresponding variations were investigated. An IFT reduction of 80.8% was appropriate under the IL CMC of about 0.1 mol·L

-1

and stronger effects were achieved when magnetite nanoparticles and salts were present profoundly under alkaline pHs. The equilibrium IFT data were accurately simulated with the Frumkin adsorption model. Hereafter

the saturated surface concentration

equilibrium constant and interaction parameter were obtained and their variations were demonstrated. Further

emulsion stability and contact angle of oil/water interface over quartz surface were studied. The oil/water emulsion stability was hardly changed with nanoparticles; however

the stability of oil/water+IL emulsions was significantly improved. It was also revealed that the presence of sodium and calcium chloride electrolytes fortifies the IL impact

whereas sodium sulfate weakens. From dynamic IFT data and fitting with kinetic models

it was found that the

IL migration toward interface follows the mixed diffusion-kinetic control model. Consequently

the IL diffusion coefficient and the appropriate activation energy were determined.

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⁰

Highly efficient[C8mim][Cl] ionic liquid accompanied with magnetite nanoparticles and different salts for interfacial tension reduction

DOI：10.1016/j.cjche.2019.03.023

摘要

Abstract

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Highly efficient[C₈mim][Cl] ionic liquid accompanied with magnetite nanoparticles and different salts for interfacial tension reduction