New high permeable polysulfone/ionic liquid membrane for gas separation

Mohadeseh Farrokhara; Fatereh Dorosti

doi:10.1016/j.cjche.2020.04.002

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New high permeable polysulfone/ionic liquid membrane for gas separation

Separation Science and Engineering | Updated：2026-01-06

- New high permeable polysulfone/ionic liquid membrane for gas separation
- New high permeable polysulfone/ionic liquid membrane for gas separation
- 中国化学工程学报（英文版） 2020年28卷第9期页码：2301-2311
- Affiliations：
  
  Department of Chemical Engineering, Rasht Branch, Islamic Azad University, Rasht,Iran,41335-3516
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.04.002
  中图分类号：
- 纸质出版：2020
- Accepted：
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Mohadeseh Farrokhara, Fatereh Dorosti. New high permeable polysulfone/ionic liquid membrane for gas separation[J]. 中国化学工程学报（英文版）, 2020,28(9):2301-2311.

Mohadeseh Farrokhara, Fatereh Dorosti. New high permeable polysulfone/ionic liquid membrane for gas separation[J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2301-2311.
Mohadeseh Farrokhara, Fatereh Dorosti. New high permeable polysulfone/ionic liquid membrane for gas separation[J]. 中国化学工程学报（英文版）, 2020,28(9):2301-2311. DOI： 10.1016/j.cjche.2020.04.002.

Mohadeseh Farrokhara, Fatereh Dorosti. New high permeable polysulfone/ionic liquid membrane for gas separation[J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2301-2311. DOI： 10.1016/j.cjche.2020.04.002.

摘要

Abstract

In this study

the effects of 1-Ethyl-3-methylimidazolium tetrafluoroborate ionic liquid on CO

/CH

separation performance of symmetric polysulfone membranes are investigated. Pure polysulfone membrane and ionic liquid-containing membranes are characterized. Field emission scanning electron microscopy (FE-SEM) is used to analyze surface morphology and thickness of the fabricated membranes. Energy dispersive spectroscopy (EDS) and elemental mapping

Fourier transform infrared (FTIR)

thermal gravimetric (TGA)

X-ray diffraction (XRD) and Tensile strength analyses are also conducted to characterize the prepared membranes. CO

/CH

separation performance of the membranes are measured twice at 0.3 MPa and room temperature (25 °C). Permeability measurements confirm that increasing ionic liquid content in polymer-ionic liquid membranes leads to a growth in CO

permeation and CO

/CH

selectivity due to high affinity of the ionic liquid to carbon dioxide. CO

permeation significantly increases from 4.3 Barrer (1 Barrer=10

-10

(STP)·cm·cm

-2

·s

-1

·cmHg

-1

1cmHg=1.333kPa) for the pure pol

ymer membrane to 601.9 Barrer for the 30 wt% ionic liquid membrane. Also

selectivity of this membrane is improved from 8.2 to 25.8. mixed gas tests are implemented to investigate gases interaction. The results showed

the disruptive effect of CH

molecules for CO

permeation lead to selectivity decrement compare to pure gas test. The fabricated membranes with high ionic liquid content in this study are promising materials for industrial CO

/CH

separation membranes.

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