TY - JOUR
T1 - Gas transport properties of the metal–organic framework (MOF)-assisted polymer of intrinsic microporosity (PIM-1) thin-film composite membranes
AU - Aliyev, Elvin
AU - Warfsmann, Jan
AU - Tokay, Begum
AU - Shishatskiy, Sergey
AU - Lee, Young-Joo
AU - Lillepaerg, Jelena
AU - Champness, Neil R.
AU - Filiz, Volkan
PY - 2021/1/18
Y1 - 2021/1/18
N2 - 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.
AB - 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.
KW - gas adsorption
KW - gas separation
KW - metal−organic framework
KW - mixed matrix membrane
KW - polymers of intrinsic microporosity
KW - thin-film composite membrane
UR - http://www.scopus.com/inward/record.url?scp=85099052105&partnerID=8YFLogxK
U2 - 10.1021/acssuschemeng.0c06297
DO - 10.1021/acssuschemeng.0c06297
M3 - Article
SN - 2168-0485
VL - 9
SP - 684
EP - 694
JO - ACS Sustainable Chemistry & Engineering
JF - ACS Sustainable Chemistry & Engineering
IS - 2
ER -