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Korean Journal of Chemical Engineering

, Volume 36, Issue 12, pp 2085–2094 | Cite as

A preferential CO2 separation using binary phases membrane consisting of Pebax®1657 and [Omim][PF6] ionic liquid

  • Kamran Shahrezaei
  • Reza AbediniEmail author
  • Mostafa Lashkarbolooki
  • Ahmad Rahimpour
Separation Technology, Thermodynamics
  • 6 Downloads

Abstract

Pebax®1657 and [Omim][PF6] ionic liquid (IL) were used to fabricate a blend membrane and applied for CO2 separation. The changes upon adding ionic liquid into the polymer matrix as well as the membrane characteristics were studied through SEM, FTIR, DSC and TGA analysis. The obtained gas permeation results indicated that the CO2 permeability in all membranes was much higher than the other studied gases. CO2 permeability of Pebax containing 8 wt% IL increased from 82.3 Barrer up to 125.6 Barrer at a pressure of 2 bar, which showed a 53% increment compared to the neat Pebax membrane. Furthermore, as the [Omim][PF6] loading within the polymer matrix was increased, the CO2/CH4 and CO2/N2 selectivities improved. In addition, the permeability and selectivity of gases was enhanced as the feed pressure increased. Upon increasing feed pressure to 10 bar, the CO2 permeability of Pebax containing 8 wt% IL reached 185.3 Barrer, which was approximately 48% higher than the permeability at a pressure of 2 bar. Moreover, the selectivity of CO2/CH4 and CO2/N2 for the Pebax/8wt% IL membrane at pressure of 2 bar was 15.3 and 46.5, respectively, which improved to 19.7 and 59.8 as the pressure increased to 10 bar.

Keywords

Gas Separation [Omim][PF6Pebax 1657 Permeability Selectivity 

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Notes

Acknowledgement

The authors acknowledge Babol Noshirvani University of Technology for financial support of this project (Grant NO. BNUT/393054/2018).

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Copyright information

© The Korean Institute of Chemical Engineers 2019

Authors and Affiliations

  • Kamran Shahrezaei
    • 1
  • Reza Abedini
    • 1
    Email author
  • Mostafa Lashkarbolooki
    • 1
  • Ahmad Rahimpour
    • 1
  1. 1.Faculty of Chemical EngineeringBabol Noshirvani University of TechnologyBabolIran

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