TY - JOUR
T1 - Highly CO2 Selective Microporous Metal-Imidazolate Framework-Based Mixed Matrix Membranes
AU - Ahmadi, Mahdi
AU - Taş, Ender
AU - Klllç, Ayşe
AU - Kumbaracl, Volkan
AU - Tallnll, Naciye
AU - Ahunbay, M. Göktuǧ
AU - Tantekin-Ersolmaz, Birgül
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/10/18
Y1 - 2017/10/18
N2 - Microporous metal-imidazolate framework (MMIF), a highly CO2 selective MOF, was incoporated into a polymeric membrane for separation of CO2 from CH4 and N2 for the first time. MMIF nanoparticles of 50-200 nm were synthesized using the sonication method and dispersed into Matrimid, a commercial polyimide, with MOF loading of 10% and 20% by weight to fabricate mixed matrix membranes (MMMs). Morphology, thermal behavior, and glass transition temperature of the membranes were characterized, and single and mixed gas permeation measurements at 35 °C and 4 bar feed pressure were carried out to reveal their separation performance. Both 10% and 20% MMIF containing Matrimid membranes exhibited enhanced gas permeabilities for all three gases. Contrary to expectations, ideal selectivity of membranes was not improved possibly due to the flexible framework of MMIF. On the other hand, mixed gas permeability measurements showed significant improvement in CO2/CH4 separation factor by 130% and CO2/N2 separation factor by 79% due to competitive adsorption favoring CO2.
AB - Microporous metal-imidazolate framework (MMIF), a highly CO2 selective MOF, was incoporated into a polymeric membrane for separation of CO2 from CH4 and N2 for the first time. MMIF nanoparticles of 50-200 nm were synthesized using the sonication method and dispersed into Matrimid, a commercial polyimide, with MOF loading of 10% and 20% by weight to fabricate mixed matrix membranes (MMMs). Morphology, thermal behavior, and glass transition temperature of the membranes were characterized, and single and mixed gas permeation measurements at 35 °C and 4 bar feed pressure were carried out to reveal their separation performance. Both 10% and 20% MMIF containing Matrimid membranes exhibited enhanced gas permeabilities for all three gases. Contrary to expectations, ideal selectivity of membranes was not improved possibly due to the flexible framework of MMIF. On the other hand, mixed gas permeability measurements showed significant improvement in CO2/CH4 separation factor by 130% and CO2/N2 separation factor by 79% due to competitive adsorption favoring CO2.
KW - CO separation
KW - Matrimid
KW - mixed matrix membrane
KW - MMIF
KW - MOF
KW - polyimide
UR - http://www.scopus.com/inward/record.url?scp=85031746116&partnerID=8YFLogxK
U2 - 10.1021/acsami.7b13054
DO - 10.1021/acsami.7b13054
M3 - Article
AN - SCOPUS:85031746116
SN - 1944-8244
VL - 9
SP - 35936
EP - 35946
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 41
ER -