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CO 2 / N 2 and O 2 / N 2 Separation Using Mixed‐Matrix Membranes with MOF ‐74 Nanocrystals Synthesized Via Microwave Reactions
Author(s) -
Roh Euijin,
Subiyanto Iyan,
Choi Wanuk,
Park Young Cheol,
Cho ChurlHee,
Kim Hyunuk
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12217
Subject(s) - membrane , selectivity , polydimethylsiloxane , nanocrystal , permeation , chemistry , adsorption , scanning electron microscope , matrix (chemical analysis) , analytical chemistry (journal) , chemical engineering , materials science , nanotechnology , chromatography , catalysis , organic chemistry , biochemistry , engineering , composite material
Due to their large surface areas and unique gas adsorption properties, mixed‐matrix membranes (MMMs) with metal–organic frameworks (MOFs) have been extensively studied in relation to various gas separations. In the present paper, we report the quick synthesis of MOF‐74 (M = Mg, Mn, Co, Ni) nanocrystals by microwave reactions and the fabrication of MMMs for use in CO 2 /N 2 and O 2 /N 2 separation. The scanning electron microscopy and energy dispersive X‐ray spectroscopy analysis revealed the homogenous distribution of the MOF‐74 nanocrystals within the polydimethylsiloxane (PDMS). The single gas permeation experiments showed the enhanced CO 2 /N 2 and O 2 /N 2 selectivity by adding the MOF‐74 nanocrystals to the PDMS. This enhanced CO 2 /N 2 and O 2 /N 2 selectivity may be due to the affinity of CO 2 and O 2 toward the Lewis acidic sites of the MOF‐74.