Gas transport properties of the metal–organic framework (MOF)-assisted polymer of intrinsic microporosity (PIM-1) thin-film composite membranes

Research output: Contribution to journalArticlepeer-review

Authors

  • Elvin Aliyev
  • Jan Warfsmann
  • Begum Tokay
  • Sergey Shishatskiy
  • Young-Joo Lee
  • Jelena Lillepaerg
  • Volkan Filiz

Colleges, School and Institutes

Abstract

The current study summarizes the findings of single-gas transport performances of mixed matrix thin-film composite membranes consisting of metal–organic frameworks (MOFs) incorporated into a polymer of intrinsic microporosity (PIM-1). Mg-MOF-74, MIL-53, TIFSIX-3, and Zn2(bim)4 were investigated as stand-alone materials and as incorporated into the PIM-1 polymer matrix serving as a selective layer of thin-film composite membranes by various methods: Fourier-transform infrared spectroscopy, solid-state NMR, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. The effect of MOF loading and nature on the mixed-matrix membrane morphology and operation were analyzed by varying the MOF content in the polymer matrix from 2 to 10 wt % with respect to the dry polymer weight. The results show that the incorporation of MOFs into the PIM-1 polymer matrix boosts the permeance and selectivity of H2 and O2 over N2, and the prepared PIM-1/TIFSIX_4 mixed matrix membrane shows better separation performance for CO2/CH4 than pure PIM-1. Such membranes can be good candidates for ammonia purge gas, oxygen enrichment, and acid gas treatment applications.

Details

Original languageEnglish
Pages (from-to)684–694
Number of pages11
JournalACS Sustainable Chemistry & Engineering
Volume9
Issue number2
Early online date22 Dec 2020
Publication statusPublished - 18 Jan 2021

Keywords

  • mixed matrix membrane, metal−organic framework, polymers of intrinsic microporosity, gas separation, thin-film composite membrane, gas adsorption